CN105223340A - A kind of high quality source rock raw hydrocarbon potentiality key parameter evaluation method - Google Patents

A kind of high quality source rock raw hydrocarbon potentiality key parameter evaluation method Download PDF

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CN105223340A
CN105223340A CN201510757467.5A CN201510757467A CN105223340A CN 105223340 A CN105223340 A CN 105223340A CN 201510757467 A CN201510757467 A CN 201510757467A CN 105223340 A CN105223340 A CN 105223340A
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hydrocarbon
source rock
rock
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potentiality
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CN105223340B (en
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王文广
王民
郑民
卢双舫
王志伟
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China University of Petroleum East China
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Abstract

A kind of high quality source rock raw hydrocarbon potentiality key parameter evaluation method, belongs to oil and gas resource evaluation technical field.Containing following committed step, 1), rely on hydrocarbon source rock geochemistry data, determine the underdone low-mature oil row hydrocarbon thresholding of high quality source rock, normal raw hydrocarbon thresholding and normal row's hydrocarbon thresholding; 2) computing hydrocarbon generating quantity of source and raw hydrocarbon rate evaluation model, is set up; 3), set up hydrocarbon source rock Hydrocarbon yield and row's hydrocarbon rate evaluation model, evaluate destination layer position hydrocarbon source rock Hydrocarbon yield and row's hydrocarbon rate key parameter; 4), high quality source rock organic carbon coefficient of restitution evaluation model is set up, evaluation objective layer position hydrocarbon source rock organic carbon recovering coefficient; 5) evaluate destination layer position, study area high quality source rock raw hydrocarbon potentiality planimetric map, analyze and contribute relation with the raw hydrocarbon of densification oil.Evaluate the Component of Premature-imature stage raw hydrocarbon potentiality key parameter of high quality source rock objective and accurately, supplement the blank of the high quality source rock Component of Premature-imature stage of in the past being weakened by people raw hydrocarbon.

Description

A kind of high quality source rock raw hydrocarbon potentiality key parameter evaluation method
Technical field
The present invention relates to a kind of high quality source rock raw hydrocarbon potentiality key parameter evaluation method, belong to oil and gas resource evaluation technical field.
Background technology
Along with petering out of conventional gas and oil, middle-shallow layer and unconventionaloil pool exploration cause the attention of petroleum prospecting man gradually.For unconventionaloil pool, especially after U.S.'s shale gas is broken through, fine and close oil gas becomes another " bright spot " field of unconventional petroleum resources, the fine and close oily resource of China is very abundant, there is good fair exploration, in recent years, in Upper Triassic in Ordos Basin prolongation group, depression Permian system wind city, Junggar Basin agate lake group, Jimusaer Sag Permian system reed grass ditch group, yarn account-stone tree ditch depression Permian system flat-bottomed water gate, reed grass ditch group before BogdaM ountain, Song-liao basin Cretaceous System spring head group and Qingshankou group, Bohai gulf basin PALEOGENE SHAHEJIE FORMATION, the fine and close exploratory development of the intervals such as hollow southern slope, east, Turpan-Hami basin mound Shuixigou Group achieves impressive progress, the oily geological resources of the land densification of forecast China reaches 110 × 10 8t ~ 135 × 10 8t, mining resources amount reaches 15 × 10 8t, Exploration Potential is huge.Above-mentioned fine and close oil-gas exploration is exploration practices under the guiding theory of the ripe hydrocarbon source rock of large area distribution, the reservoir of large area distribution and hydrocarbon source rock and reservoir next-door neighbour, and be in the Component of Premature-imature stage as s_4 formation fine and close oily development area, lower Liaohe River Western Depression thunder man area hydrocarbon source rock, fine and close oil is rich in compact reservoir, its petroleum resources problem is unintelligible, thus, this discovery proposes a kind of high quality source rock raw hydrocarbon potentiality key parameter evaluation method, under mainly solving current geologic condition, Component of Premature-imature stage high quality source rock gives birth to hydrocarbon problem, simultaneously for China the 3rd is (Dong-pu Depression SHAHEJIE FORMATION, Jin Xian depression the 3rd is, Chai Damupendizhong district the 3rd is, Song-liao basin Nenjiang group) salinize lacustrine facies Component of Premature-imature high quality source rock research indicate thinking, for China the 3rd is that the conventional reservoir of Component of Premature-imature oil sources and compact reservoir oil-gas exploration point the direction.
The raw hydrocarbon patterns such as previous scholars proposes resinite, suberinite for Unfertilized ovary, bacterial alter is organic, wax gathers with algae lipids thing, the large molecule premature degradation of rich sulphur, kerogen pyrolysis, Soluble Organic Matter becomes hydrocarbon, meanwhile, incremental advances is obtained in following several respects: 1) hydrocarbon source rock and various raw hydrocarbon materials form mechanism simulation experiment and the natural maturation section research of Unfertilized ovary under DIFFERENT DEPOSITIONAL ENVIRONMENTS; 2) solvable and insoluble organic matter is forming in Unfertilized ovary the contribution mutually transformed and to non-stand oil; 3) in oil, pitch and kerogen, the decarboxylic reaction of fatty acid cpds is studied becoming the contribution of hydrocarbon; 4) low temperature mineral catalysis forms the Mechanism Study of Unfertilized ovary; 5) from the Forming Mechanism of the structure of chemical composition angle research Unfertilized ovary of raw hydrocarbon matrix; 6) to the research that chemical kinetics and the application thereof of raw hydrocarbon evolution are carried out; Organic transformation and the Effect study etc. becoming microorganism in hydrocarbon process.
But less in the raw hydrocarbon potentiality key parameter research of the Component of Premature-imature stage of high quality source rock, the method for work that the viewpoint of shortage system, arrangement, development is looked at problem, lacks the work of absolute quantitation aspect.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of high quality source rock raw hydrocarbon potentiality key parameter evaluation method; The present invention inherits kerogen pyrolysis and gathers theory, the raw hydrocarbon theory of modern kerogen, trial exploration solves the problem, emphasis of the present invention sets up grading Component of Premature-imature stage high quality source rock raw hydrocarbon potentiality key parameter method, depict the key parameter of the raw hydrocarbon potentiality of Component of Premature-imature stage high quality source rock, fill up some blank of domestic Component of Premature-imature stage high quality source rock raw hydrocarbon potentiality key parameter research.
For the problems referred to above, the object of the invention is to propose a kind of high quality source rock raw hydrocarbon potentiality key parameter evaluation method, dissect the spatial of Component of Premature-imature stage high quality source rock, set up the raw hydrocarbon rate of high quality source rock, row's hydrocarbon rate and organic carbon recovering coefficient evaluation model, solve the densification oil development area in Component of Premature-imature stage high quality source rock district in the past without the not clear problem of oil sources or oil sources source, the raw hydrocarbon potentiality key parameter overcoming Component of Premature-imature high quality source rock in the past evaluates difficult problem.Determine the raw hydrocarbon potentiality of Component of Premature-imature stage high quality source rock, solve the problem that the oil sources source of the fine and close oil in this district is in the past not clear, disclose the oil sources of the fine and close oil in this district objectively, for the fine and close exploration activity work in oil field Component of Premature-imature stage high quality source rock district provides technical support.
In order to realize foregoing invention object, the present invention adopts following technical method:
A kind of high quality source rock raw hydrocarbon potentiality key parameter evaluation method, comprises the following steps:
Step 1), collect and arrange basic data, described basic data comprises: Pyrolysis Experiment data, chloroform bitumen A test data, vitrinite reflectance Ro test data, lighter hydrocarbons recover measured data, hydrocarbon source rock group composition data;
Step 2), chloroform bitumen " A " key parameter lighter hydrocarbons recover: because chloroform bitumen " A " light hydrocarbon component in extractive process loses, adopt the hydrocarbon source rock experiment lighter hydrocarbons data in study area and hydrocarbon source rock group composition data, set up the lighter hydrocarbons coefficient of restitution of chloroform bitumen " A ", lighter hydrocarbons recovery is carried out to Geochemistry Parameters chloroform bitumen " A ", corrects out original chloroform bitumen " A ";
Step 3), set up hydrocarbon source rock S 1/ (S 1+ S 2), chloroform bitumen " A "/TOC, S 1/ TOC, (S 1+ S 2)/TOC key parameter groundization section: joint step 2) in lighter hydrocarbons compensate after chloroform bitumen " A " and step 1) in pyrolysis (the residual hydrocarbons S that collects 1, cracking hydrocarbon S 2) data, set up hydrocarbon source rock S 1/ (S 1+ S 2), chloroform bitumen " A "/TOC, S 1/ TOC, (S 1+ S 2)/TOC key parameter groundization section; Meanwhile, the raw hydrocarbon potentiality (S of underdone-low mature stage hydrocarbon source rock is utilized 1+ S 2)/TOC parameter, determines the original raw hydrocarbon potentiality of hydrocarbon source rock;
Step 4), determine the Unfertilized ovary row hydrocarbon thresholding of high quality source rock, normal raw hydrocarbon thresholding and normal row's hydrocarbon thresholding: adopt destination layer position hydrocarbon source rock S 1/ (S 1+ S 2), chloroform bitumen " A "/TOC, S 1/ TOC key parameter determination hydrocarbon source rock is the raw hydrocarbon thresholding degree of depth normally; Adopt high quality source rock (S 1+ S 2the raw hydrocarbon thresholding of)/TOC key parameter section determination hydrocarbon source rock Unfertilized ovary and normal row's hydrocarbon thresholding degree of depth; For constraint hydrocarbon primary rock producing hydrocarbon rate, row's hydrocarbon rate and organic carbon recovering coefficient lay the foundation;
Step 5), set up computing hydrocarbon generating quantity of source and raw hydrocarbon rate evaluation model, evaluate destination layer position computing hydrocarbon generating quantity of source and raw hydrocarbon rate key parameter: according to step 2) in destination layer position hydrocarbon source rock recover after chloroform bitumen " A "/TOC set up hydrocarbon source rock residual hydrocarbons amount; Adopt hydrocarbon source rock (S 1+ S 2)/TOC key parameter and original hydrocarbon generation potential evaluation go out hydrocarbon source rock Hydrocarbon yield; Adopt material balance method, set up computing hydrocarbon generating quantity of source evaluation model, evaluate destination layer position computing hydrocarbon generating quantity of source, the original raw hydrocarbon potentiality of integrated hydrocarbon source rock, evaluate destination layer position, study area hydrocarbon primary rock producing hydrocarbon rate;
Step 6), set up hydrocarbon source rock Hydrocarbon yield and row's hydrocarbon rate evaluation model, evaluate destination layer position hydrocarbon source rock Hydrocarbon yield and row's hydrocarbon rate key parameter: according to hydrocarbon source rock (S 1+ S 2)/TOC key parameter and original hydrocarbon generation potential evaluation go out hydrocarbon source rock Hydrocarbon yield, joint step 5) middle evaluation birth hydrocarbon amount, set up hydrocarbon source rock row hydrocarbon rate evaluation model, evaluate destination layer position, study area hydrocarbon source rock row hydrocarbon rate;
Step 7), set up high quality source rock organic carbon coefficient of restitution evaluation model: according to the relation of the organic and inorganic change of destination layer position, study area hydrocarbon source rock rock and depth of burial, set up organic carbon recovering coefficient evaluation model;
Step 8), evaluation objective layer position hydrocarbon source rock organic carbon recovering coefficient: rely on step 7) the hydrocarbon source rock organic carbon recovering coefficient evaluation model set up, joint step 5) the hydrocarbon primary rock producing hydrocarbon rate that evaluates and step 6) the hydrocarbon source rock row hydrocarbon rate that evaluates, evaluate destination layer position, study area hydrocarbon source rock organic carbon recovering coefficient;
Step 9), evaluate destination layer position, study area high quality source rock raw hydrocarbon potentiality key parameter planimetric map: integrated hydrocarbon source rock destination layer position degree of ripeness vitrinite reflectance Ro planimetric map, raw hydrocarbon potentiality key parameter (raw hydrocarbon rate, row's hydrocarbon rate, organic carbon recovering coefficient), original raw hydrocarbon potentiality, evaluate destination layer position, study area hydrocarbon primary rock producing hydrocarbon potentiality key parameter planimetric map;
Step 10), evaluate destination layer position, study area high quality source rock raw hydrocarbon potentiality planimetric map, analyze and contribute relation with the raw hydrocarbon of densification oil: spatial, the step 9 of destination layer position, joint study district Component of Premature-imature stage high quality source rock) in the raw hydrocarbon potentiality key parameter that evaluates, evaluate the raw hydrocarbon potentiality of Component of Premature-imature stage high quality source rock objectively; The fine and close hydrocarbon resources distributive province that associating and destination layer position are close to, the oil sources of the fine and close oil gas in destination layer position, reasonable dismissal study area carrys out source problem.
The present invention is owing to taking above technical scheme, it has the following advantages: 1, the present invention due to propose and establish Component of Premature-imature stage high quality source rock raw hydrocarbon rate, arrange hydrocarbon rate and organic carbon recovering coefficient evaluation model, overcome the data of rock fever simulated experiment in the past and can not go out Unfertilized ovary part in high quality source rock by objective rational evaluation, the objective raw hydrocarbon potentiality key parameter reasonably evaluating Component of Premature-imature stage high quality source rock.
Accompanying drawing explanation
When considered in conjunction with the accompanying drawings, by referring to detailed description below, more completely can understand the present invention better and easily learn wherein many adjoint advantages, but accompanying drawing described herein is used to provide a further understanding of the present invention, form a part of the present invention, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention, as schemed wherein:
Fig. 1 is chloroform bitumen " A " lighter hydrocarbons recovery schemes;
Fig. 2 is the group composition sectional view of hydrocarbon source rock;
Fig. 3 is hydrocarbon source rock group composition histogram;
Fig. 4 is hydrocarbon source rock Geochemistry Parameters S 1/ (S 1+ S 2) with the graph of a relation of the degree of depth;
Fig. 5 is hydrocarbon source rock Geochemistry Parameters S 1the graph of a relation of/TOC and the degree of depth;
Fig. 6 is the graph of a relation of hydrocarbon source rock Geochemistry Parameters chloroform bitumen " A "/TOC and the degree of depth;
Fig. 7 is hydrocarbon source rock Geochemistry Parameters (S 1+ S 2the graph of a relation of)/TOC and the degree of depth;
Fig. 8 is the graph of a relation of hydrocarbon source rock Geochemistry Parameters vitrinite reflectance Ro and the degree of depth;
Fig. 9 a is computing hydrocarbon generating quantity of source and depth relationship figure;
Fig. 9 b is computing hydrocarbon generating quantity of source and vitrinite reflectance Ro graph of a relation;
Figure 10 a is hydrocarbon primary rock producing hydrocarbon rate and depth relationship figure;
Figure 10 b is hydrocarbon primary rock producing hydrocarbon rate and vitrinite reflectance Ro graph of a relation;
Figure 11 a arranges hydrocarbon rate and depth relationship figure after hydrocarbon source rock recovers relatively;
Figure 11 b arranges hydrocarbon rate and vitrinite reflectance Ro graph of a relation after hydrocarbon source rock recovers relatively;
Figure 12 a is hydrocarbon source rock Hydrocarbon yield and depth relationship figure;
Figure 12 b is hydrocarbon source rock Hydrocarbon yield and vitrinite reflectance Ro graph of a relation;
Figure 13 a is hydrocarbon source rock organic carbon recovering coefficient and depth relationship figure;
Figure 13 b is hydrocarbon source rock organic carbon recovering coefficient and vitrinite reflectance Ro graph of a relation;
Figure 14 a is the sub-section bottom surface Ro isogram of s_4 formation Du one;
Figure 14 b is s_4 formation Du one sub-section of bottom surface raw hydrocarbon amount isogram;
Figure 15 a is s_4 formation promotion sub-section bottom surface Ro isogram;
Figure 15 b is the sub-section bottom surface of s_4 formation promotion raw hydrocarbon amount isogram;
Figure 16 a is s_4 formation Du one sub-section of Component of Premature-imature district, bottom surface raw hydrocarbon comprehensive quality evaluation figure;
Figure 16 b is the sub-Component of Premature-imature district, section bottom surface of s_4 formation promotion raw hydrocarbon comprehensive quality evaluation figure;
Figure 17 hydrocarbon source rock organic carbon recovering coefficient evaluation model schematic diagram;
Figure 18 shaly source rock and Carbonate Source Rocks factor of porosity are with R ovariation characteristic schematic diagram;
Figure 19 method flow diagram of the present invention.
Below in conjunction with drawings and Examples, the present invention is further described.
Embodiment
Obviously, the many modifications and variations that those skilled in the art do based on aim of the present invention belong to protection scope of the present invention.
Embodiment 1: as Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9 a, Fig. 9 b, Figure 10 a, Figure 10 b, Figure 11 a, Figure 11 b, Figure 12 a, Figure 12 b, Figure 13 a, Figure 13 b, Figure 14 a, Figure 14 b, Figure 15 a, Figure 15 b, Figure 16 a, Figure 16 b, Figure 17, shown in Figure 18 and Figure 19, a kind of high quality source rock raw hydrocarbon potentiality key parameter evaluation method, have rated the raw hydrocarbon rate of Component of Premature-imature stage high quality source rock objective and accurately, row's hydrocarbon rate, establish the organic carbon recovering coefficient evaluation model of letter of guarantee Component of Premature-imature stage high quality source rock, evaluate Component of Premature-imature stage high quality source rock raw hydrocarbon potentiality key parameter exactly, for Bohai gulf basin WEST DEPRESSION OF LIAOHE OILFIELD thunder man area, comprise the following steps:
(1), collect, arrange basic data, described basic data comprises: Pyrolysis Experiment data, chloroform bitumen " A " test data, vitrinite reflectance Ro test data, lighter hydrocarbons recover measured data, hydrocarbon source rock group composition data;
Compile the Pyrolysis Experiment data of the thunder man area Du Jiatai group of s_4 formation and promotion group hydrocarbon source rock, chloroform bitumen " A " test data, vitrinite reflectance Ro test data, lighter hydrocarbons recovery measured data, hydrocarbon source rock group composition data, in table 1, table 2, table 3, table 4;
Table 1 thunder man area upper Es4 pyrolysis parameters of rock statistical form
Table 2 thunder man area upper Es4 chloroform bitumen " A " parametric statistics table
Table 3 thunder man area upper Es4 vitrinite reflectance Ro detection statistics table
Table 4 thunder man area upper Es4 PONA analysis statistical form
(2), chloroform bitumen " A " key parameter lighter hydrocarbons recover: because chloroform bitumen " A " light hydrocarbon component in extractive process loses, adopt the hydrocarbon source rock experiment lighter hydrocarbons data in study area and hydrocarbon source rock group composition data, set up the lighter hydrocarbons coefficient of restitution of chloroform bitumen " A ", lighter hydrocarbons recovery is carried out to Geochemistry Parameters chloroform bitumen " A ", corrects out original chloroform bitumen " A ";
Chloroform bitumen " A " is in extractive process, light hydrocarbon component loses, and survey now chloroform bitumen " A " the real residual hydrocarbons in underground cannot be reflected, residual hydrocarbons amount is evaluated in order to objective and accurate, thus, be necessary to set up chloroform bitumen " A " lighter hydrocarbons recovery scheme (Fig. 1 chloroform bitumen " A " lighter hydrocarbons recovery scheme), lighter hydrocarbons recovery is carried out to chloroform bitumen " A ", to the stable hydrocarbon in petroleum component group composition data, aromatic hydrocarbon, non-hydrocarbon and asphaltene carries out analyzing (the group composition sectional view of Fig. 2 hydrocarbon source rock), analyze stable hydrocarbon and aromatic hydrocarbon proportion (Fig. 3 hydrocarbon source rock group composition histogram) in the petroleum component meeting statistical law, this chloroform bitumen " A " lighter hydrocarbons recover to adopt lighter hydrocarbons recovery and petroleum component group composition data to carry out, table 5 is chloroform bitumen " A " comparative analysis tables before and after recovering, after recovering as can be seen from the table, chloroform bitumen " A " is larger than recovering front chloroform bitumen " A ", differ greatly, set forth the importance that actual measurement chloroform bitumen " A " recovers,
Reduced parameter table before and after table 5 chloroform bitumen A recovers
(3) hydrocarbon source rock S, is set up 1/ (S 1+ S 2), chloroform bitumen " A "/TOC, S 1/ TOC and (S 1+ S 2the key parameter groundization sections such as)/TOC:
Joint step 2) in lighter hydrocarbons compensate after chloroform bitumen " A " and step 1) in pyrolysis (the residual hydrocarbons S that collects 1, cracking hydrocarbon S 2) data, set up hydrocarbon source rock S 1/ (S 1+ S 2), chloroform bitumen " A "/TOC, S 1/ TOC, (S 1+ S 2the key parameter groundization sections (Fig. 4, Fig. 5, Fig. 6, Fig. 7 and Fig. 8) such as)/TOC, the degree of depth/Ro;
Meanwhile, the raw hydrocarbon potentiality (S of Component of Premature-imature stage hydrocarbon source rock is utilized 1+ S 2)/TOC parameter (Fig. 7), determines that the original raw hydrocarbon potentiality of hydrocarbon source rock are 845mg/g;
(4) the Unfertilized ovary row hydrocarbon thresholding of high quality source rock, normal raw hydrocarbon thresholding and normal row's hydrocarbon thresholding, is determined:
Adopt destination layer position hydrocarbon source rock S 1/ (S 1+ S 2), chloroform bitumen " A "/TOC, S 1/ TOC key parameter determination hydrocarbon source rock is raw hydrocarbon thresholding degree of depth 2300m normally;
Adopt high quality source rock (S 1+ S 2the underdone low-mature oil of)/TOC key parameter section determination hydrocarbon source rock raw hydrocarbon thresholding 1500m and normal row's hydrocarbon thresholding degree of depth 2650m; For constraint hydrocarbon primary rock producing hydrocarbon rate, row's hydrocarbon rate and organic carbon recovering coefficient lay the foundation;
(5) computing hydrocarbon generating quantity of source and raw hydrocarbon rate evaluation model, is set up, evaluate destination layer position computing hydrocarbon generating quantity of source and raw hydrocarbon rate key parameter: according to step 2) in destination layer position hydrocarbon source rock recover after chloroform bitumen " A "/TOC set up hydrocarbon source rock residual hydrocarbons amount, adopt hydrocarbon source rock (S 1+ S 2)/TOC key parameter and original hydrocarbon generation potential evaluation go out hydrocarbon source rock Hydrocarbon yield, adopt material balance method, set up computing hydrocarbon generating quantity of source evaluation model, evaluate destination layer position computing hydrocarbon generating quantity of source, the original raw hydrocarbon potentiality of integrated hydrocarbon source rock, evaluate destination layer position, study area hydrocarbon primary rock producing hydrocarbon rate;
According to step 2) in destination layer position hydrocarbon source rock recover after chloroform bitumen " A "/TOC set up hydrocarbon source rock residual hydrocarbons amount, its judgement schematics (2) is as follows
In formula: Q hSRCLfor hydrocarbon source rock residual hydrocarbons amount; Chloroform"A" is original in recovering rear chloroform bitumen " A "; Chloroform"A" is actual measurement chloroform bitumen " A "; N (C bHT+FXT) for meet statistical law statistically crude oil group composition in stable hydrocarbon and aromatic hydrocarbon proportion; K qTfor chloroform bitumen " A " lighter hydrocarbons coefficient of restitution, be the C evaluated in component dynamics 6-13with C 13+ratio; N (K qTXS) be the overall coefficient of restitution of the actual measurement chloroform bitumen " A " meeting statistical law statistically.
Adopt hydrocarbon source rock (S 1+ S 2)/TOC key parameter and original hydrocarbon generation potential evaluation go out hydrocarbon source rock Hydrocarbon yield, set up hydrocarbon source rock Hydrocarbon yield evaluation model, and its judgement schematics (3) is as follows
Q HSRPL=Q YSQL-Q DQYSQL(3)
In formula: Q hSRPLfor hydrocarbon source rock Hydrocarbon yield; Q ySQLfor the original raw hydrocarbon potentiality of high quality source rock, the raw hydrocarbon potentiality of Main Basis Component of Premature-imature stage high quality source rock determine original raw hydrocarbon potentiality 845mg/g; Q dQYSQLfor the original raw hydrocarbon potentiality of current high quality source rock, Main Basis hydrocarbon source rock (S 1+ S 2)/TOC key parameter determines current hydrocarbon primary rock producing hydrocarbon potentiality;
Adopt material balance method, set up computing hydrocarbon generating quantity of source evaluation model, evaluate destination layer position computing hydrocarbon generating quantity of source, raw hydrocarbon amount judgement schematics (4) is as follows
Q HSRSL=Q HSRCL+Q HSRPL(4)
In formula: Q hSRSLfor computing hydrocarbon generating quantity of source; Q hSRCLfor hydrocarbon source rock residual hydrocarbons amount; Q hSRPLfor hydrocarbon source rock Hydrocarbon yield;
Combinatorial formula (3) and formula (4), set up destination layer position, study area hydrocarbon primary rock producing hydrocarbon rate evaluation model, and for evaluating hydrocarbon primary rock producing hydrocarbon rate lays the foundation, its judgement schematics (5) is as follows
YP H G R = Q H S R S L Q Y S Q L = Q H S R C L + Q H S R P L Q Y S Q L - - - ( 5 )
In formula: YP hGRfor hydrocarbon primary rock producing hydrocarbon rate; Q hSRSLfor computing hydrocarbon generating quantity of source; Q hSRCLfor hydrocarbon source rock residual hydrocarbons amount; Q hSRPLfor hydrocarbon source rock Hydrocarbon yield; Q ySQLfor the original raw hydrocarbon potentiality of high quality source rock, the raw hydrocarbon potentiality of Main Basis Component of Premature-imature stage high quality source rock determine original raw hydrocarbon potentiality;
Set up the raw hydrocarbon amount of thunder man area upper Es4 and depth relationship figure (Fig. 9 a) with computing hydrocarbon generating quantity of source and vitrinite reflectance Ro graph of a relation (Fig. 9 b), as can be seen from the figure, high quality source rock is when 1500m, during corresponding vitrinite reflectance Ro0.325, start to generate Unfertilized ovary, to the degree of depth 1900m time, Ro0.38 time, the raw amount of Unfertilized ovary is maximum; During degree of depth 2300m, during Ro0.48, enter normal raw hydrocarbon thresholding.In conjunction with the original raw hydrocarbon potentiality of hydrocarbon source rock, evaluate hydrocarbon primary rock producing hydrocarbon rate and depth relationship figure (Figure 10 a), hydrocarbon primary rock producing hydrocarbon rate and Ro graph of a relation (Figure 10 b), find from figure, high quality source rock is when 1500m, during corresponding vitrinite reflectance Ro0.325, start to generate Unfertilized ovary, to the degree of depth 1900m time, Ro0.38 time, the raw amount of Unfertilized ovary is maximum; Raw hydrocarbon rate reaches 12%.
(6), set up hydrocarbon source rock Hydrocarbon yield and row's hydrocarbon rate evaluation model, evaluate destination layer position hydrocarbon source rock Hydrocarbon yield and row's hydrocarbon rate key parameter: according to hydrocarbon source rock (S 1+ S 2)/TOC key parameter and original hydrocarbon generation potential evaluation go out hydrocarbon source rock Hydrocarbon yield, joint step 5) middle evaluation birth hydrocarbon amount, set up hydrocarbon source rock row hydrocarbon rate evaluation model, evaluate destination layer position, study area hydrocarbon source rock row hydrocarbon rate;
Adopt the hydrocarbon source rock residual hydrocarbons amount evaluation of setting up to evaluate (2) formula, according to step 2) in destination layer position hydrocarbon source rock recover after chloroform bitumen " A "/TOC set up hydrocarbon source rock residual hydrocarbons amount; Adopt the hydrocarbon source rock Hydrocarbon yield judgement schematics (3) set up, according to hydrocarbon source rock (S 1+ S 2)/TOC key parameter and original hydrocarbon generation potential evaluation go out hydrocarbon source rock Hydrocarbon yield; Adopt material balance method, set up computing hydrocarbon generating quantity of source evaluation model, according to raw hydrocarbon amount judgement schematics (4), evaluate destination layer position computing hydrocarbon generating quantity of source.
Integrated hydrocarbon source rock Hydrocarbon yield judgement schematics (3) and raw hydrocarbon amount judgement schematics (4), set up destination layer position, study area hydrocarbon source rock row hydrocarbon rate evaluation model, for evaluating hydrocarbon primary rock producing hydrocarbon rate lays the foundation, its judgement schematics (6) is as follows
YP H E R = Q H S R P L Q H S R S L = Q Y S Q L - Q D Q Y S Q L Q H S R C L + Q H S R P L - - - ( 6 )
In formula: YP hERfor hydrocarbon source rock row hydrocarbon rate; Q hSRSLfor computing hydrocarbon generating quantity of source; Q hSRCLfor hydrocarbon source rock residual hydrocarbons amount; Q hSRPLfor hydrocarbon source rock Hydrocarbon yield; Q ySQLfor the original raw hydrocarbon potentiality of high quality source rock, Main Basis Component of Premature-imature high quality source rock raw hydrocarbon potentiality determine original raw hydrocarbon potentiality; Q dQYSQLfor the original raw hydrocarbon potentiality of current high quality source rock, Main Basis hydrocarbon source rock (S 1+ S 2)/TOC key parameter determines current hydrocarbon primary rock producing hydrocarbon potentiality;
According to hydrocarbon source rock Hydrocarbon yield and row's hydrocarbon rate evaluation model of above-mentioned foundation, evaluate thunder man area upper Es4 and recover relatively that row's hydrocarbon rate and depth relationship figure be (Figure 11 a), relatively hydrocarbon rate and vitrinite reflectance Ro graph of a relation (Figure 11 b) is arranged after recovering, hydrocarbon source rock Hydrocarbon yield and depth relationship figure are (Figure 12 a), hydrocarbon source rock row's hydrocarbon rate and vitrinite reflectance Ro graph of a relation (Figure 12 b), as can be seen from the figure, Unfertilized ovary is at degree of depth 1500m, vitrinite reflectance Ro0.33 starts to arrange hydrocarbon, at degree of depth 1900m, during Ro0.38, Hydrocarbon yield is maximum with row's hydrocarbon rate, when degree of depth 2650m, Ro0.5%, enter normal row's hydrocarbon thresholding degree of depth, in addition, from thunder man area upper Es4 recover relatively row's hydrocarbon rate and depth relationship figure (Figure 11 a), recover rear and relatively arrange hydrocarbon rate and vitrinite reflectance Ro graph of a relation (Figure 11 b), can find out, although the Component of Premature-imature stage, raw hydrocarbon amount was little, but Hydrocarbon yield is still very high with row's hydrocarbon rate, has very large contribution to the fine and close oil gas that nearly source is assembled.
(7), set up high quality source rock organic carbon coefficient of restitution evaluation model: the relation of the foundation organic and inorganic change of destination layer position, study area hydrocarbon source rock rock and depth of burial, set up organic carbon recovering coefficient evaluation model;
If the initial pore volume of unit volume rock is Φ 0, saturation water in hole, the density of water is ρ w, the density of rock skeleton is ρ, and after to a certain degree developing, the volume of voids of rock is Φ, the physical model (Figure 17) of this process.If the quality of rock (inorganic part) is M during original state 0, the quality after certain phase that develops is M.
Can be obtained by model:
M 0=ρ W×φ 0r0×(1-φ 0)(7)
M=ρ W×φ+ρ r×(1-φ)(8)
If organic carbon initial mass is m c 0, organic initial mass is m 0, the initial mass of rock is M 0, the remaining organic carbon quality after certain phase that develops is m c, the quality of remnant organic matter is m, and the residual qualities of rock is M, then organic change is as follows
m c 0 m c = 1 1 - YP H E R × YP H R G - - - ( 9 )
In formula: K tOCXSfor the organic carbon recovering coefficient of Component of Premature-imature stage high quality source rock; YP hERfor hydrocarbon source rock row hydrocarbon rate; YP hGRfor hydrocarbon primary rock producing hydrocarbon rate;
According to the definition of organic carbon content,
In formula, m cbe the quality of the organic carbon in 100 unit of weights, m is the amount of the organic matter in 100 unit of weights, and M is the quality of the rock in 100 unit of weights;
Then organic carbon recovering coefficient D can be expressed as:
K T O C X S = TOC 0 T O C = m c 0 M 0 + m 0 m c M + m = M + m M 0 + m 0 × m c 0 m c - - - ( 10 )
Combinatorial formula (5) and formula (6), the conversion ratio being provided with the mass loss of machine carbon is YP hER× YP hGR, then:
K T O C X S = M + m M 0 + m 0 × 1 1 - YP H E R × YP H G R - - - ( 11 )
Consider initial mass large very many of the initial mass of rock than organic matter, thus, can be by
M + m M 0 + m 0 ≈ M M 0 - - - ( 12 )
Combinatorial formula (7), formula (8), formula (11) and formula (12), obtain hydrocarbon source rock organic carbon recovering coefficient judgement schematics (13), as follows
K T O C X S = TOC 0 T O C = m c 0 M 0 + m 0 m c M + m = M + m M 0 + m 0 × m c 0 m c ≈ M M 0 × m c 0 m c = ρ W × φ + ρ r × ( 1 - φ ) ρ W × φ 0 + ρ r 0 × ( 1 - φ 0 ) × m c 0 m c ≈ M M 0 × m c 0 m c = ρ W × φ + ρ r × ( 1 - φ ) ρ W × φ 0 + ρ r 0 × ( 1 - φ 0 ) × 1 1 - YP H E R × YP H G R - - - ( 13 )
In formula, m c 0for organic carbon initial mass, the remaining organic carbon quality after certain phase that develops is m c, the initial mass of rock is M 0, the residual qualities of rock is M, ρ rofor the density of rock initial mass, ρ rfor the density of residual rocks quality, rock density carries out process acquisition according to well logging densimetric curve now, because rock density is many between 2 ~ 3, in order to the density of outstanding residual rocks quality is with the trend of change in depth, takes (ρ r-2) make relation with the degree of depth, and average in 5 meters in employing well logging density points, better reflect (ρ r-2) relation is made with the degree of depth; The initial pore volume of unit volume rock is Φ 0, saturation water in hole, the density of water is ρ w, after to a certain degree developing, the volume of voids of rock is Φ;
For the hydrocarbon source rock (as mud stone) of a certain lithology, along with the increase of depth of burial, factor of porosity reduces.According to mudstone porosity curve and the vitrinite reflectance Ro relation of Dongying Depression, Chuan Xi, storehouse car, the Junggar Basin, simulate mudstone porosity and vitrinite reflectance Ro relation; According to carbonate porosity degree and vitrinite reflectance Ro relation in tower, simulate carbonate factor of porosity and vitrinite reflectance Ro relation (Figure 18).
(8), evaluation objective layer position hydrocarbon source rock organic carbon recovering coefficient: rely on step 7) the hydrocarbon source rock organic carbon recovering coefficient evaluation model set up, joint step 5) the hydrocarbon primary rock producing hydrocarbon rate that evaluates and step 6) the hydrocarbon source rock row hydrocarbon rate that evaluates, evaluate destination layer position, study area hydrocarbon source rock organic carbon recovering coefficient (Figure 13 a and Figure 13 b); As can be seen from the figure, raw hydrocarbon potentiality key parameter---the organic carbon recovering coefficient that this thunder man area upper Es4 evaluates, reflect high-efficiency high-quality hydrocarbon source rock Component of Premature-imature part objectively, rationally reflect the raw hydrocarbon contribution of high quality source rock Component of Premature-imature stage exactly.
(9) destination layer position, study area high quality source rock raw hydrocarbon potentiality key parameter planimetric map, is evaluated: degree of ripeness vitrinite reflectance Ro planimetric map in boundary at the bottom of the sub-section hydrocarbon source rock of associating thunder man area s_4 formation Du one (Figure 14 a), in conjunction with the raw hydrocarbon amount of the raw hydrocarbon potentiality key parameter set up (or raw hydrocarbon rate, row's hydrocarbon rate, organic carbon recovering coefficient), evaluate the sub-section computing hydrocarbon generating quantity of source isoline planimetric map (Figure 14 b) of thunder man area s_4 formation Du one; In like manner, the sub-section hydrocarbon source rock top circle degree of ripeness vitrinite reflectance Ro planimetric map of associating thunder man area s_4 formation promotion (Figure 15 a), in conjunction with the raw hydrocarbon amount of the raw hydrocarbon potentiality key parameter set up (or raw hydrocarbon rate, row's hydrocarbon rate, organic carbon recovering coefficient), evaluate sub-section computing hydrocarbon generating quantity of source isoline planimetric map (Figure 15 b) of thunder man area s_4 formation promotion.
Step 10), evaluate destination layer position, study area high quality source rock raw hydrocarbon potentiality planimetric map, analyze and contribute relation with the raw hydrocarbon of densification oil: spatial, the step 9 of destination layer position, joint study district Component of Premature-imature stage high quality source rock) in the raw hydrocarbon potentiality key parameter that evaluates, evaluate the raw hydrocarbon potentiality of Component of Premature-imature stage high quality source rock objectively; Rely on the fine and close oil of thunder man area s_4 formation with shut out three sections be main productive layers, with one and the promotion feature that is main hydrocarbon layer of shutting out, work out raw hydrocarbon comprehensive quality evaluation figure (Figure 16 a and Figure 16 b) of the sub-section of thunder man area promotion and Du one Ya Duan Component of Premature-imature district, as can be seen from the figure, the oil sources of thunder man area Du three sections of fine and close oil has the contribution from the sub-section of thunder man area promotion and Du one Ya Duan Unfertilized ovary district, and the oil sources of the fine and close oil gas in destination layer position, reasonable dismissal study area carrys out source problem.
Embodiment 2: as shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9 a, Fig. 9 b, Figure 10 a, Figure 10 b, Figure 11 a, Figure 11 b, Figure 12 a, Figure 12 b, Figure 13 a, Figure 13 b, Figure 14 a, Figure 14 b, Figure 15 a, Figure 15 b, Figure 16 a, Figure 16 b, Figure 17, Figure 18 and Figure 19
A kind of high quality source rock raw hydrocarbon potentiality key parameter evaluation method, containing following steps;
Step 1), collect and arrange basic data, described basic data comprises: Pyrolysis Experiment data, chloroform bitumen " A " test data, vitrinite reflectance Ro test data, lighter hydrocarbons recover measured data, hydrocarbon source rock group composition data;
Step 2), chloroform bitumen " A " key parameter lighter hydrocarbons recover: because chloroform bitumen " A " light hydrocarbon component in extractive process loses, adopt the hydrocarbon source rock experiment lighter hydrocarbons data in study area and hydrocarbon source rock group composition data, set up the lighter hydrocarbons coefficient of restitution model of chloroform bitumen " A ", lighter hydrocarbons recovery is carried out to Geochemistry Parameters chloroform bitumen " A ", corrects out original chloroform bitumen " A ";
Step 3), set up hydrocarbon source rock S 1/ (S 1+ S 2), chloroform bitumen " A "/TOC, S 1/ TOC, (S 1+ S 2the key parameter groundization sections such as)/TOC, TOC is organic carbon;
Joint step 2) in lighter hydrocarbons compensate after chloroform bitumen " A " and step 1) in pyrolysis (the residual hydrocarbons S that collects 1, cracking hydrocarbon S 2) data, set up hydrocarbon source rock S 1/ (S 1+ S 2), chloroform bitumen " A "/TOC, S 1/ TOC, (S 1+ S 2the key parameter groundization sections such as)/TOC; Meanwhile, the raw hydrocarbon potentiality (S of underdone-low mature stage hydrocarbon source rock is utilized 1+ S 2)/TOC parameter, determines the original raw hydrocarbon potentiality of hydrocarbon source rock;
Step 4), determine the Unfertilized ovary row hydrocarbon thresholding of high quality source rock, normal raw hydrocarbon thresholding and normal row's hydrocarbon thresholding: adopt destination layer position hydrocarbon source rock S 1/ (S 1+ S 2), chloroform bitumen " A "/TOC, S 1/ TOC key parameter determination hydrocarbon source rock is the raw hydrocarbon thresholding degree of depth normally, adopts high quality source rock (S 1+ S 2the raw hydrocarbon thresholding of)/TOC key parameter section determination hydrocarbon source rock Unfertilized ovary and normal row's hydrocarbon thresholding degree of depth; For constraint hydrocarbon primary rock producing hydrocarbon rate, row's hydrocarbon rate and organic carbon recovering coefficient lay the foundation;
Step 5), set up computing hydrocarbon generating quantity of source and raw hydrocarbon rate evaluation model, evaluate destination layer position computing hydrocarbon generating quantity of source and raw hydrocarbon rate key parameter: according to step 2) in destination layer position hydrocarbon source rock recover after chloroform bitumen " A "/TOC set up hydrocarbon source rock residual hydrocarbons amount, adopt hydrocarbon source rock (S 1+ S 2)/TOC key parameter and original hydrocarbon generation potential evaluation go out hydrocarbon source rock Hydrocarbon yield, adopt material balance method, set up computing hydrocarbon generating quantity of source evaluation model, evaluate destination layer position computing hydrocarbon generating quantity of source, the original raw hydrocarbon potentiality of integrated hydrocarbon source rock, evaluate destination layer position, study area hydrocarbon primary rock producing hydrocarbon rate;
Step 6), set up hydrocarbon source rock Hydrocarbon yield and row's hydrocarbon rate evaluation model, evaluate destination layer position hydrocarbon source rock Hydrocarbon yield and row's hydrocarbon rate key parameter: according to hydrocarbon source rock (S 1+ S 2)/TOC key parameter and original hydrocarbon generation potential evaluation go out hydrocarbon source rock Hydrocarbon yield, joint step 5) middle evaluation birth hydrocarbon amount, set up hydrocarbon source rock row hydrocarbon rate evaluation model, evaluate destination layer position, study area hydrocarbon source rock row hydrocarbon rate;
Step 7), set up high quality source rock organic carbon coefficient of restitution evaluation model: according to the relation of the organic and inorganic change of destination layer position, study area hydrocarbon source rock rock and depth of burial, set up organic carbon recovering coefficient evaluation model;
Step 8), evaluation objective layer position hydrocarbon source rock organic carbon recovering coefficient: rely on step 7) the hydrocarbon source rock organic carbon recovering coefficient evaluation model set up, joint step 5) the hydrocarbon primary rock producing hydrocarbon rate that evaluates and step 6) the hydrocarbon source rock row hydrocarbon rate that evaluates, evaluate destination layer position, study area hydrocarbon source rock organic carbon recovering coefficient;
Step 9), evaluate destination layer position, study area high quality source rock raw hydrocarbon potentiality key parameter planimetric map: integrated hydrocarbon source rock destination layer position degree of ripeness vitrinite reflectance Ro planimetric map, raw hydrocarbon potentiality key parameter (raw hydrocarbon rate, row's hydrocarbon rate, organic carbon recovering coefficient), original raw hydrocarbon potentiality, evaluate destination layer position, study area hydrocarbon primary rock producing hydrocarbon potentiality key parameter planimetric map;
Step 10), evaluate destination layer position, study area high quality source rock raw hydrocarbon potentiality planimetric map, analyze and contribute relation with the raw hydrocarbon of densification oil: spatial, the step 9 of destination layer position, joint study district Component of Premature-imature high quality source rock) in the raw hydrocarbon potentiality key parameter that evaluates, evaluate the raw hydrocarbon potentiality of Component of Premature-imature high quality source rock objectively; The fine and close hydrocarbon resources distributive province that associating and destination layer position are close to, the oil sources of the fine and close oil gas in destination layer position, reasonable dismissal study area carrys out source problem.
Described step 2) middle chloroform bitumen " A " key parameter lighter hydrocarbons recovery: because chloroform bitumen " A " light hydrocarbon component in extractive process loses, adopt the hydrocarbon source rock experiment lighter hydrocarbons data in study area and hydrocarbon source rock group composition data, set up the lighter hydrocarbons coefficient of restitution meeting the chloroform bitumen " A " of statistical law, lighter hydrocarbons recovery is carried out to Geochemistry Parameters chloroform bitumen " A ", corrects out original chloroform bitumen " A ";
Described step 5) in set up computing hydrocarbon generating quantity of source and raw hydrocarbon rate evaluation model, evaluate destination layer position computing hydrocarbon generating quantity of source and raw hydrocarbon rate key parameter: according to step 2) in destination layer position hydrocarbon source rock recover after chloroform bitumen " A "/TOC set up hydrocarbon source rock residual hydrocarbons amount; Adopt hydrocarbon source rock (S 1+ S 2)/TOC key parameter and original hydrocarbon generation potential evaluation go out hydrocarbon source rock Hydrocarbon yield; Adopt material balance method, set up computing hydrocarbon generating quantity of source evaluation model, evaluate destination layer position computing hydrocarbon generating quantity of source, the original raw hydrocarbon potentiality of integrated hydrocarbon source rock, evaluate destination layer position, study area hydrocarbon primary rock producing hydrocarbon rate;
Described step 6) set up hydrocarbon source rock Hydrocarbon yield and row's hydrocarbon rate evaluation model, evaluate destination layer position hydrocarbon source rock Hydrocarbon yield and row's hydrocarbon rate key parameter: according to hydrocarbon source rock (S 1+ S 2)/TOC key parameter and original hydrocarbon generation potential evaluation go out hydrocarbon source rock Hydrocarbon yield, joint step 5) middle evaluation birth hydrocarbon amount, set up hydrocarbon source rock row hydrocarbon rate evaluation model, evaluate destination layer position, study area hydrocarbon source rock row hydrocarbon rate;
Described step 7) in set up high quality source rock organic carbon coefficient of restitution evaluation model: according to the relation of the organic and inorganic change of destination layer position, study area hydrocarbon source rock rock and depth of burial, set up organic carbon recovering coefficient evaluation model;
Described step 1), step 2), step 3), step 4), step 5), step 6), step 7), step 8), step 9) and step 10), entirety provides a kind of high quality source rock raw hydrocarbon potentiality key parameter evaluation method, solve and evaluate Component of Premature-imature stage hydrocarbon primary rock producing hydrocarbon potentiality and raw hydrocarbon potentiality key parameter objectively, correctly disclose the fine and close oil sources problem in Component of Premature-imature stage high quality source rock district.
As mentioned above, embodiments of the invention are explained, but as long as do not depart from inventive point of the present invention in fact and effect can have a lot of distortion, this will be readily apparent to persons skilled in the art.Therefore, such variation is also all included within protection scope of the present invention.

Claims (5)

1. a high quality source rock raw hydrocarbon potentiality key parameter evaluation method, is characterized in that comprising the following steps:
Step 1), collect and arrange basic data, described basic data comprises: Pyrolysis Experiment data, chloroform bitumen A test data, vitrinite reflectance Ro test data, lighter hydrocarbons recover measured data, hydrocarbon source rock group composition data;
Step 2), chloroform bitumen " A " key parameter lighter hydrocarbons recover: because chloroform bitumen " A " light hydrocarbon component in extractive process loses, adopt the hydrocarbon source rock experiment lighter hydrocarbons data in study area and hydrocarbon source rock group composition data, set up the lighter hydrocarbons coefficient of restitution of chloroform bitumen " A ", lighter hydrocarbons recovery is carried out to Geochemistry Parameters chloroform bitumen " A ", corrects out original chloroform bitumen " A ";
Step 3), set up hydrocarbon source rock S 1/ (S 1+ S 2), chloroform bitumen " A "/TOC, S 1/ TOC, (S 1+ S 2)/TOC key parameter groundization section: joint step 2) in lighter hydrocarbons compensate after chloroform bitumen " A " and step 1) in pyrolysis (the residual hydrocarbons S that collects 1, cracking hydrocarbon S 2) data, set up hydrocarbon source rock S 1/ (S 1+ S 2), chloroform bitumen " A "/TOC, S 1/ TOC, (S 1+ S 2)/TOC key parameter groundization section; Meanwhile, the raw hydrocarbon potentiality (S of underdone-low mature stage hydrocarbon source rock is utilized 1+ S 2)/TOC parameter, determines the original raw hydrocarbon potentiality of hydrocarbon source rock;
Step 4), determine the Unfertilized ovary row hydrocarbon thresholding of high quality source rock, normal raw hydrocarbon thresholding and normal row's hydrocarbon thresholding: adopt destination layer position hydrocarbon source rock S 1/ (S 1+ S 2), chloroform bitumen " A "/TOC, S 1/ TOC key parameter determination hydrocarbon source rock is the raw hydrocarbon thresholding degree of depth normally; Adopt high quality source rock (S 1+ S 2the raw hydrocarbon thresholding of)/TOC key parameter section determination hydrocarbon source rock Unfertilized ovary and normal row's hydrocarbon thresholding degree of depth; For constraint hydrocarbon primary rock producing hydrocarbon rate, row's hydrocarbon rate and organic carbon recovering coefficient lay the foundation;
Step 5), set up computing hydrocarbon generating quantity of source and raw hydrocarbon rate evaluation model, evaluate destination layer position computing hydrocarbon generating quantity of source and raw hydrocarbon rate key parameter: according to step 2) in destination layer position hydrocarbon source rock recover after chloroform bitumen " A "/TOC set up hydrocarbon source rock residual hydrocarbons amount; Adopt hydrocarbon source rock (S 1+ S 2)/TOC key parameter and original hydrocarbon generation potential evaluation go out hydrocarbon source rock Hydrocarbon yield; Adopt material balance method, set up computing hydrocarbon generating quantity of source evaluation model, evaluate destination layer position computing hydrocarbon generating quantity of source, the original raw hydrocarbon potentiality of integrated hydrocarbon source rock, evaluate destination layer position, study area hydrocarbon primary rock producing hydrocarbon rate;
Step 6), set up hydrocarbon source rock Hydrocarbon yield and row's hydrocarbon rate evaluation model, evaluate destination layer position hydrocarbon source rock Hydrocarbon yield and row's hydrocarbon rate key parameter: according to hydrocarbon source rock (S 1+ S 2)/TOC key parameter and original hydrocarbon generation potential evaluation go out hydrocarbon source rock Hydrocarbon yield, joint step 5) middle evaluation birth hydrocarbon amount, set up hydrocarbon source rock row hydrocarbon rate evaluation model, evaluate destination layer position, study area hydrocarbon source rock row hydrocarbon rate;
Step 7), set up high quality source rock organic carbon coefficient of restitution evaluation model: according to the relation of the organic and inorganic change of destination layer position, study area hydrocarbon source rock rock and depth of burial, set up organic carbon recovering coefficient evaluation model;
Step 8), evaluation objective layer position hydrocarbon source rock organic carbon recovering coefficient: rely on step 7) the hydrocarbon source rock organic carbon recovering coefficient evaluation model set up, joint step 5) the hydrocarbon primary rock producing hydrocarbon rate that evaluates and step 6) the hydrocarbon source rock row hydrocarbon rate that evaluates, evaluate destination layer position, study area hydrocarbon source rock organic carbon recovering coefficient;
Step 9), evaluate destination layer position, study area high quality source rock raw hydrocarbon potentiality key parameter planimetric map: integrated hydrocarbon source rock destination layer position degree of ripeness vitrinite reflectance Ro planimetric map, raw hydrocarbon potentiality key parameter (raw hydrocarbon rate, row's hydrocarbon rate, organic carbon recovering coefficient), original raw hydrocarbon potentiality, evaluate destination layer position, study area hydrocarbon primary rock producing hydrocarbon potentiality key parameter planimetric map;
Step 10), evaluate destination layer position, study area high quality source rock raw hydrocarbon potentiality planimetric map, analyze and contribute relation with the raw hydrocarbon of densification oil: spatial, the step 9 of destination layer position, joint study district Component of Premature-imature stage high quality source rock) in the raw hydrocarbon potentiality key parameter that evaluates, evaluate the raw hydrocarbon potentiality of Component of Premature-imature stage high quality source rock objectively; The fine and close hydrocarbon resources distributive province that associating and destination layer position are close to, the oil sources of the fine and close oil gas in destination layer position, reasonable dismissal study area carrys out source problem.
2. a kind of high quality source rock according to claim 1 raw hydrocarbon potentiality key parameter evaluation method, it is characterized in that: described step 2) middle chloroform bitumen " A " key parameter lighter hydrocarbons recovery: because chloroform bitumen " A " light hydrocarbon component in extractive process loses, adopt the hydrocarbon source rock experiment lighter hydrocarbons data in study area and hydrocarbon source rock group composition data, set up the lighter hydrocarbons coefficient of restitution of chloroform bitumen " A ", lighter hydrocarbons recovery is carried out to Geochemistry Parameters chloroform bitumen " A ", corrects out original chloroform bitumen " A ";
Chloroform bitumen " A " loses light hydrocarbon component (C in extractive process 14-6), in the evaluation procedure of high quality source rock residual hydrocarbons, occupy pith, set up detailed chloroform bitumen " A " lighter hydrocarbons coefficient of restitution judgement schematics (1) as follows
In formula: chloroform"A" originalfor recovering rear chloroform bitumen " A "; Chloroform"A" actual measurementfor actual measurement chloroform bitumen " A "; N (C bHT+FXT) for meet statistical law statistically crude oil group composition in stable hydrocarbon and aromatic hydrocarbon proportion; K qTfor chloroform bitumen " A " lighter hydrocarbons coefficient of restitution, be the C evaluated in component dynamics 6-13with C 13+ratio; N (K qTXS) be the overall coefficient of restitution of the actual measurement chloroform bitumen " A " meeting statistical law statistically.
3. a kind of high quality source rock according to claim 1 raw hydrocarbon potentiality key parameter evaluation method, it is characterized in that: described step 5) in set up computing hydrocarbon generating quantity of source and raw hydrocarbon rate evaluation model, evaluate destination layer position computing hydrocarbon generating quantity of source and life hydrocarbon rate key parameter: according to step 2) the rear chloroform bitumen " A " of middle destination layer position hydrocarbon source rock recovery/TOC evaluation hydrocarbon source rock residual hydrocarbons amount, adopt hydrocarbon source rock (S 1+ S 2)/TOC key parameter and original hydrocarbon generation potential evaluation go out hydrocarbon source rock Hydrocarbon yield, adopt material balance method, set up computing hydrocarbon generating quantity of source evaluation model, evaluate destination layer position computing hydrocarbon generating quantity of source, the original raw hydrocarbon potentiality of integrated hydrocarbon source rock, set up hydrocarbon primary rock producing hydrocarbon rate evaluation model, evaluate destination layer position, study area hydrocarbon primary rock producing hydrocarbon rate;
According to step 2) in destination layer position hydrocarbon source rock recover after chloroform bitumen " A "/TOC set up hydrocarbon source rock residual hydrocarbons amount, its judgement schematics (2) is as follows
In formula: Q hSRCLfor hydrocarbon source rock residual hydrocarbons amount; Chloroform"A" is original in recovering rear chloroform bitumen " A "; Chloroform"A" is actual measurement chloroform bitumen " A "; N (C bHT+FXT) for meet statistical law statistically crude oil group composition in stable hydrocarbon and aromatic hydrocarbon proportion; K qTfor chloroform bitumen " A " lighter hydrocarbons coefficient of restitution, be the C evaluated in component dynamics 6-13with C 13+ratio; N (K qTXS) be the overall coefficient of restitution of the actual measurement chloroform bitumen " A " meeting statistical law statistically;
Adopt hydrocarbon source rock (S 1+ S 2)/TOC key parameter and original hydrocarbon generation potential evaluation go out hydrocarbon source rock Hydrocarbon yield, set up hydrocarbon source rock Hydrocarbon yield evaluation model, and its judgement schematics (3) is as follows
Q HSRPL=Q YSQL-Q DQQL(3)
In formula: Q hSRPLfor hydrocarbon source rock Hydrocarbon yield; Q ySQLfor the original raw hydrocarbon potentiality of high quality source rock, the raw hydrocarbon potentiality of Main Basis Component of Premature-imature stage high quality source rock determine original raw hydrocarbon potentiality; Q dQQLfor the raw hydrocarbon potentiality of current high quality source rock, Main Basis hydrocarbon source rock (S 1+ S 2)/TOC key parameter determines current hydrocarbon primary rock producing hydrocarbon potentiality;
Adopt material balance method, set up computing hydrocarbon generating quantity of source evaluation model, evaluate destination layer position computing hydrocarbon generating quantity of source, raw hydrocarbon amount judgement schematics (4) is as follows
Q HSRSL=Q HSRCL+Q HSRPL(4)
In formula: Q hSRSLfor computing hydrocarbon generating quantity of source; Q hSRCLfor hydrocarbon source rock residual hydrocarbons amount; Q hSRPLfor hydrocarbon source rock Hydrocarbon yield;
Combinatorial formula (3) and formula (4), set up destination layer position, study area hydrocarbon primary rock producing hydrocarbon rate evaluation model, and for evaluating hydrocarbon primary rock producing hydrocarbon rate lays the foundation, its judgement schematics (5) is as follows
YP H G R = Q H S R S L Q Y S Q L = Q H S R C L + Q H S R P L Q Y S Q L - - - ( 5 )
In formula: YP hGRfor hydrocarbon primary rock producing hydrocarbon rate; Q hSRSLfor computing hydrocarbon generating quantity of source; Q hSRCLfor hydrocarbon source rock residual hydrocarbons amount; Q hSRPLfor hydrocarbon source rock Hydrocarbon yield; Q ySQLfor the original raw hydrocarbon potentiality of high quality source rock, Main Basis Component of Premature-imature stage high quality source rock raw hydrocarbon potentiality determine original raw hydrocarbon potentiality.
4. a kind of high quality source rock according to claim 1 raw hydrocarbon potentiality key parameter evaluation method, it is characterized in that: described step 6) set up hydrocarbon source rock Hydrocarbon yield and row's hydrocarbon rate evaluation model, evaluate destination layer position hydrocarbon source rock Hydrocarbon yield and row's hydrocarbon rate key parameter: according to hydrocarbon source rock (S 1+ S 2)/TOC key parameter and original hydrocarbon generation potential evaluation go out hydrocarbon source rock Hydrocarbon yield, joint step 5) middle evaluation birth hydrocarbon amount, set up hydrocarbon source rock row hydrocarbon rate evaluation model, evaluate destination layer position, study area hydrocarbon source rock row hydrocarbon rate;
Hydrocarbon source rock residual hydrocarbons amount evaluation evaluation (2) formula of employing foundation, according to step 2) the rear chloroform bitumen " A " of middle destination layer position hydrocarbon source rock recovery/TOC evaluation hydrocarbon source rock residual hydrocarbons amount; Adopt the hydrocarbon source rock Hydrocarbon yield judgement schematics (3) set up, according to hydrocarbon source rock (S 1+ S 2)/TOC key parameter and original hydrocarbon generation potential evaluation go out hydrocarbon source rock Hydrocarbon yield; Adopt material balance method, set up computing hydrocarbon generating quantity of source evaluation model, according to raw hydrocarbon amount judgement schematics (4), evaluate destination layer position computing hydrocarbon generating quantity of source;
Integrated hydrocarbon source rock Hydrocarbon yield judgement schematics (3) and raw hydrocarbon amount judgement schematics (4), set up destination layer position, study area hydrocarbon source rock row hydrocarbon rate evaluation model, evaluate hydrocarbon source rock row hydrocarbon rate, its judgement schematics (6) is as follows
YP H E R = Q H S R P L Q H S R S L = Q Y S Q L - Q D Q Y S Q L Q H S R C L + Q H S R P L - - - ( 6 )
In formula: YP hERfor hydrocarbon source rock row hydrocarbon rate; Q hSRSLfor computing hydrocarbon generating quantity of source; Q hSRCLfor hydrocarbon source rock residual hydrocarbons amount; Q hSRPLfor hydrocarbon source rock Hydrocarbon yield; Q ySQLfor the original raw hydrocarbon potentiality of high quality source rock, Main Basis Component of Premature-imature stage high quality source rock raw hydrocarbon potentiality determine original raw hydrocarbon potentiality; Q dQYSQLfor the raw hydrocarbon potentiality of current high quality source rock, Main Basis hydrocarbon source rock (S 1+ S 2)/TOC key parameter determines current hydrocarbon primary rock producing hydrocarbon potentiality.
5. a kind of high quality source rock according to claim 1 raw hydrocarbon potentiality key parameter evaluation method, it is characterized in that: described step 7) in set up high quality source rock organic carbon coefficient of restitution evaluation model: according to the relation of the organic and inorganic change of destination layer position, study area hydrocarbon source rock rock and depth of burial, set up organic carbon recovering coefficient evaluation model;
If the initial pore volume of unit volume rock is Φ 0, saturation water in hole, the density of water is ρ w, the density of rock skeleton is ρ ro, after to a certain degree developing, the volume of voids of rock is Φ, and the density of rock skeleton is ρ r, the physical model of this process; If the quality of rock (inorganic part) is M during original state 0, the quality after certain phase that develops is M;
Can be obtained by model:
M 0=ρ W×φ 0r0×(1-φ 0)(7)
M=ρ W×φ+ρ r×(1-φ)(8)
If organic carbon initial mass is m c 0, organic initial mass is m 0, the initial mass of rock is M 0, the remaining organic carbon quality after certain phase that develops is m c, the quality of remnant organic matter is m, and the residual qualities of rock is M, then organic change is as follows
m c 0 m c = 1 1 - YP H E R × YP H R G - - - ( 9 )
In formula: K tOCXSfor the organic carbon recovering coefficient of Component of Premature-imature stage high quality source rock; YP hERfor hydrocarbon source rock row hydrocarbon rate; YP hGRfor hydrocarbon primary rock producing hydrocarbon rate;
According to the definition of organic carbon content,
In formula, m cbe the quality of the organic carbon in 100 unit of weights, m is the amount of the organic matter in 100 unit of weights, and M is the quality of the rock in 100 unit of weights;
Then organic carbon recovering coefficient D can be expressed as:
K T O C X S = TOC 0 T O C = m c 0 M 0 + m 0 m c M + m = M + m M 0 + m 0 × m c 0 m c - - - ( 10 )
Combinatorial formula (5) and formula (6), the conversion ratio being provided with the mass loss of machine carbon is YP hER× YP hGR, then:
K T O C X S = M + m M 0 + m 0 × 1 1 - YP H E R × YP H G R - - - ( 11 )
Consider initial mass large very many of the initial mass of rock than organic matter, thus, can be by
M + m M 0 + m 0 ≈ M M 0 - - - ( 12 )
Combinatorial formula (7), formula (8), formula (11) and formula (12), obtain hydrocarbon source rock organic carbon recovering coefficient judgement schematics (13), as follows
K T O C X S = TOC 0 T O C = m c 0 M 0 + m 0 m c M + m = M + m M 0 + m 0 × m c 0 m c ≈ M M 0 × m c 0 m c = ρ W × φ + ρ r × ( 1 - φ ) ρ W × φ 0 + ρ r 0 × ( 1 - φ 0 ) × m c 0 m c ≈ M M 0 × m c 0 m c = ρ W × φ + ρ r × ( 1 - φ ) ρ W × φ 0 + ρ r 0 × ( 1 - φ 0 ) × 1 1 - YP H E R × YP H G R - - - ( 13 )
In formula, m c 0for organic carbon initial mass, the remaining organic carbon quality after certain phase that develops is m c, the initial mass of rock is M 0, the residual qualities of rock is M, ρ rofor the density of rock initial mass, ρ rfor the density of residual rocks quality, rock density carries out process acquisition according to well logging densimetric curve now, because rock density is many between 2 ~ 3, in order to the density of outstanding residual rocks quality is with the trend of change in depth, takes (ρ r-2) make relation with the degree of depth, and average in 5 meters in employing well logging density points, better reflect (ρ r-2) relation is made with the degree of depth; The initial pore volume of unit volume rock is Φ 0, saturation water in hole, the density of water is ρ w, after to a certain degree developing, the volume of voids of rock is Φ;
For the hydrocarbon source rock (as mud stone) of a certain lithology, along with the increase of depth of burial, factor of porosity reduces; According to mudstone porosity curve and the vitrinite reflectance Ro relation of Dongying Depression, Chuan Xi, storehouse car, the Junggar Basin, simulate mudstone porosity and vitrinite reflectance Ro relation; According to carbonate porosity degree and vitrinite reflectance Ro relation in tower, simulate carbonate factor of porosity and vitrinite reflectance Ro relation.
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CN113407898A (en) * 2021-08-20 2021-09-17 中国科学院地质与地球物理研究所 Evaluation method for residual hydrocarbon amount of marine high-over-mature hydrocarbon source rock
CN113505547A (en) * 2021-07-16 2021-10-15 中国石油大学(北京) Hydrocarbon source rock effectiveness judgment method
CN114062360A (en) * 2020-07-29 2022-02-18 中国石油天然气股份有限公司 Quantitative research method for hydrocarbon-generating single-component hydrogen index in coal-series hydrocarbon source rock
CN114428088A (en) * 2020-09-08 2022-05-03 中国石油化工股份有限公司 Method for generating hydrocarbon source fluid corrosion hole-increasing capability evaluation chart
US11499957B1 (en) 2021-08-20 2022-11-15 Institute Of Geology And Geophysics, Chinese Academy Of Sciences Evaluation method for residual hydrocarbon of post- to over-mature marine source rocks

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