CN102757778A - Fracturing fluid capable of resisting high salinity water quality - Google Patents

Fracturing fluid capable of resisting high salinity water quality Download PDF

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CN102757778A
CN102757778A CN2012102885513A CN201210288551A CN102757778A CN 102757778 A CN102757778 A CN 102757778A CN 2012102885513 A CN2012102885513 A CN 2012102885513A CN 201210288551 A CN201210288551 A CN 201210288551A CN 102757778 A CN102757778 A CN 102757778A
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fluid
high salinity
water quality
stabilizer
crosslinked
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CN102757778B (en
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孙虎
宁治军
谢璇
高光辉
彭树禹
高燕
宁治新
卫娟
安琳
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Changqing Downhole Operation Co of CNPC Chuanqing Drilling Engineering Co Ltd
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Changqing Downhole Operation Co of CNPC Chuanqing Drilling Engineering Co Ltd
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Abstract

The invention relates to a fracturing fluid capable of resisting high salinity water quality. The fracturing fluid is characterized by being composed of a base fluid and a cross-linking fluid which are fully mixed in proportion. The base fluid contains a chelate cosolvent and a chelate stabilizer, wherein the chelate cosolvent can restrain high salinity of water quality and promote swelling of guanidine gum. The base fluid comprises 98.2-98.65 parts of high salinity surface water, 0.1-0.15 part of the chelate cosolvent,0.3-0.4 part of thickener, 0.1-0.15 part of bactericide, 0.3-0.5 part of clay stabilizer, 0.5 part of demulsifying cleanup agent and 0.05-0.1 part of the chelate stabilizer; the cross-linking fluid comprises 50 parts of water, 50 parts of organic cross-linking agents and 0.35 part of gel breaker; and the fracturing fluid comprises 99.2-99.5 parts of the base fluid and 0.5-0.8 part of the cross-linking fluid. By aid of the fracturing fluid, water resources can be saved effectively, and the success rate for fracturing construction can be improved.

Description

A kind of anti-high salinity water quality fracturing liquid
Technical field
The present invention relates to a kind of fracturing liquid that is used for the oil field compression fracture construction, particularly a kind of anti-high salinity water quality fracturing liquid.Belong to hydrocarbon zone exploitation field.
Background technology
In the prior art, employed fracturing liquid mainly is to be main with water-base gel fracturing fluid in the oil-gas field fracturing transformation process.Inadaptability below the used conventional fracturing liquid prescription in Ji's plateau area exists:
(1) at present on-the-spot employed water-base gel fracturing fluid mainly is that vegetable jelly does, pH value, salinity, foreign matter content, turbidity, the bacterium of dosing water quality all had strict requirement, otherwise can not dosing, perhaps causes fracturing liquid degraded, rotten, corrupt;
(2) construction water of collection in worksite is slightly acidic from Ji's plateau area, and color is turned to be yellow slightly.The bloated speed of guanidine peptization with water sample that water source point is equipped with configuration is very slow, and the phenomenon of layering and precipitating occurs.A jar end appearance deposition condensed into bulk after guanidine matrix liquid left standstill 4h, and the tank deck viscosity grade is low.Base fluid can not hang adding the frozen glue toughness extreme difference that organic borate cross-linker is cross-linked to form.Frozen glue very easily dewaters and becomes fragile, take grittiness can and high temperature resistant property also very a little less than.
(3) can find out through assay water sample; Experiment 6 water samples of getting are compared with process water; Solid content exceeds about 8.5 times, and salinity reaches more than 9 times of service water salinity, and is wherein the highest with 195-34 wellblock, ground surface water salinity; Reach 277.63 milligramequivalents/L, this just becomes the important factor that influences guanidine matrix fluidity ability.The frozen glue that the base fluid of service water preparation forms is behind 70 ℃ of continuous 60min of shearing, and viscosity remains on more than the 100mpas; And the frozen glue that 195-34 wellblock, ground surface water water forms is under the continuous shearing of rheometer, and behind the 7min, viscosity drop is low to moderate below the 50mpas, can not satisfy the site operation requirement.Adding pressure break chelating solubility promoter CSO-1 and pressure break chelating solubility promoter CST-1 anti-shear performance improves.
Summary of the invention
The object of the invention provides a kind of anti-high salinity water quality fracturing liquid, can suppress the water quality high salinity, promote glue swollen chelating solubility promoter and chelate stabilizer, forms a kind of new fracturing liquid system, to reach water saving, to improve construction success ratio purpose.
For achieving the above object, the technical scheme that the present invention adopts is:
A kind of anti-high salinity water quality fracturing liquid is characterized in that: fracturing liquid suppresses the water quality high salinity by containing, promote the base fluid of guanidine glue swollen chelating solubility promoter and chelate stabilizer and crosslinked fluid is formed and with base fluid and crosslinked fluid thorough mixing in proportion;
Its technological process is:
(1) preparation of base fluid:
The proportioning of base fluid:
98.2~98.65 parts of high salinity surface water, 0.1~0.15 part of chelating solubility promoter, 0.3~0.4 part of thickening material, 0.1~0.15 part in sterilant, clay stabilizer 0.3-0.5 part, 0.5 part of breakdown of emulsion cleanup additive, 0.05~0.1 part of chelate stabilizer;
The blending process process is: under with pump circulation or whisking appliance condition of stirring; The chelating solubility promoter, sterilant, thickening material, clay stabilizer, breakdown of emulsion cleanup additive and the chelate stabilizer that in above-mentioned mass parts high salinity surface water, successively slowly add above-mentioned mass parts; Continue to circulate or stirred 30 minutes; So that liquid mixing is abundant, the abundant swelling of thickening material forms uniform liquid;
(2) preparation of crosslinked fluid:
The proportioning of crosslinked fluid: 50 parts in water, 50 parts of organic crosslinking agents, 0.35 part of gel breaker;
The blending process process is: water and linking agent is even by above-mentioned mass parts thorough mixing circulation;
(3) of the fracturing fluid preparation:
Of the fracturing fluid proportioning: 99.2~99.5 parts of base fluids, crosslinked fluid 0.5-0.8 part;
The blending process process is: under stirring condition that base fluid and crosslinked fluid is even by above-mentioned mass parts thorough mixing, and to form full-bodied liquid.
Described thickening material is the verivate of natural plant guanidine glue, i.e. hydroxypropyl guanidine glue HPG, and its molecular structural formula is following:
Figure BDA00002007143400021
Described chelating solubility promoter is the mixture of poly-phosphate and YD 30.
Described sterilant is the nonionic non-oxidative bactericide.
Described clay stabilizer is the long-acting low injury type clay stabilizer of organic low molecular class, and molecular weight is at 300-800.
Described breakdown of emulsion cleanup additive is the composite reactive systems that forms of nonionogenic tenside, can keep the wetting ability of rock, prevents to abolish the milk sap of working fluid body and crude oil formation.
Described chelate stabilizer is organic bases or mineral alkali, and described organic bases is one or both a mixture of trolamine, thanomin, and described mineral alkali is a sodium hydroxide.
Described organic crosslinking agent is the organic chelated highly enriched linking agent of the crosslinked usefulness of vegetable jelly, crosslinked time of lag 0.5-2min, temperature resistant capability >=70 ℃, cross-linking properties is good, the linking agent of lower concentration viscosifying agent.
Described gel breaker is any one in ammonium persulphate, Potassium Persulphate, ydrogen peroxide 50, the Lucidol; Except that in linking agent, adding according to quantity, the variation of FT during also according to pressure break, artificial wedge shape adding on truck-mounted blender.
Described chelating solubility promoter is chelating solubility promoter CSO-1; Thickening material is guanidine glue CJ2-6; Sterilant is sterilant CJSJ-2, and clay stabilizer is clay stabilizer COP-1, and chelate stabilizer is that chelate stabilizer CST-1, breakdown of emulsion cleanup additive are breakdown of emulsion cleanup additive CF-5D; Organic crosslinking agent is that linking agent JL-2, gel breaker are gel breaker APS, the above-mentioned trade name that is.Sale is all arranged on the above-mentioned raw materials market.
The invention has the beneficial effects as follows: 1) organic crosslinking agent that adopts of the present invention is the organic chelated highly enriched linking agent of the crosslinked usefulness of vegetable jelly, has crosslinked wide ranges, consumption is little, crosses crosslinked not bleed; Low temperature frozen glue is embrittlement not, and aquation is thorough, and low temperature does not return glue; Frozen glue temperature resistance shear resistant is strong; Take grittiness and can wait characteristics well, crosslinked time of lag 0.5-2min, temperature resistant capability is greater than 70 ℃.
When 2) chelating solubility promoter dosage was 0.05%-0.15%, the guanidine peptization expanded effective, and the chelate stabilizer dosage is 0.05~0.1% o'clock, and cross-linking properties is good, can satisfy the needs of site operation.
3) ionization takes place in the water-soluble back of chelating solubility promoter, generates the molecular chain of electronegative property, and it and Ca2+, Mg2+ plasma form water-soluble complex compound or inner complex, thereby inorganic salt solubleness is increased, and plays the hydrotropy scale effect.
4) the crosslinked guanidine glue that forms behind the process formula adjustment is at 70 ℃ of down cut 45min, and last viscosity all remains on more than the 100mpas.This fracturing liquid prescription has heatproof anti-shear performance preferably, and laboratory and test in place all have good prop-carrying capacity (according to the requirement of industry standard, reaching 50mpas in viscosity can satisfy).
5) add chelating solubility promoter and chelate stabilizer, make this fracturing liquid cording have that good shear resistant, thermostability, water-insoluble and residue content are low, strong, the broken glue of control filtration capacity is in time thorough, less to reservoir damage, comparatively adapt to this reservoir.
6) of the fracturing fluid preparation can not used life fresh water, uses local high salinity surface water, but the conserve water resource and the energy are effectively protected environment.
7) this fracturing liquid is suitable for the pressing crack construction in the relatively poor low-permeability oil gas field of surface water quality condition, improves of the fracturing fluid performance, improves the pressing crack construction success ratio.Improve the RF of oil gas well, have good economic benefit and wide application prospect.
Description of drawings
Below in conjunction with embodiment and Figure of description the present invention is done further explain, but not as to qualification of the present invention.
Fig. 1 is the long 8 layers of epimere construction curve of the ground 195-34 well of embodiment 5;
Fig. 2 is the long 8 layers of hypomere pressing crack construction curve of the ground 195-34 well of embodiment 5.
Embodiment
A kind of anti-high salinity water quality fracturing liquid is characterized in that: fracturing liquid suppresses the water quality high salinity by containing, promote the base fluid of guanidine glue swollen chelating solubility promoter and chelate stabilizer and crosslinked fluid is formed and with base fluid and crosslinked fluid thorough mixing in proportion;
Its technological process is:
(1) preparation of base fluid:
The proportioning of base fluid:
98.2~98.65 parts of high salinity surface water, 0.1~0.15 part of chelating solubility promoter, 0.3~0.4 part of thickening material, 0.1~0.15 part in sterilant, clay stabilizer 0.3-0.5 part, 0.5 part of breakdown of emulsion cleanup additive, 0.05~0.1 part of chelate stabilizer;
The blending process process is: under with pump circulation or whisking appliance condition of stirring; The chelating solubility promoter, sterilant, thickening material, clay stabilizer, breakdown of emulsion cleanup additive and the chelate stabilizer that in the high salinity surface water of above-mentioned mass parts, successively slowly add above-mentioned mass parts; Continue to circulate or stirred 30 minutes; So that liquid mixing is abundant, the abundant swelling of thickening material forms uniform liquid;
(2) preparation of crosslinked fluid:
The proportioning of crosslinked fluid: 50 parts in water, 50 parts of organic crosslinking agents, 0.35 part of gel breaker;
The blending process process is: water and crosslinked fluid is even by above-mentioned mass parts thorough mixing circulation,
(3) of the fracturing fluid preparation:
Of the fracturing fluid proportioning: 99.2~99.5 parts of base fluids, crosslinked fluid 0.5-0.8 part;
The blending process process is: under stirring condition that base fluid and crosslinked fluid is even by above-mentioned mass parts thorough mixing, and to form full-bodied liquid.
Embodiment 1 (the stratum buried depth≤1700m)
(1) preparation of base fluid:
The proportioning of base fluid:
High salinity surface water 98.65kg, chelating solubility promoter 0.1kg, thickening material 0.3kg, sterilant 0.1kg, clay stabilizer 0.3kg, breakdown of emulsion cleanup additive 0.5kg, chelate stabilizer 0.05kg;
The blending process process is: under with pump circulation or whisking appliance condition of stirring; The chelating solubility promoter, sterilant, thickening material, clay stabilizer, breakdown of emulsion cleanup additive and the chelate stabilizer that in the high salinity surface water of above-mentioned mass parts, successively slowly add above-mentioned mass parts; Continue to circulate or stirred 30 minutes; So that liquid mixing is abundant, the abundant swelling of thickening material forms uniform liquid;
(2) preparation of crosslinked fluid:
The proportioning of crosslinked fluid: water 50kg, organic crosslinking agent 50kg, gel breaker 0.35kg;
The blending process process is: water and linking agent is even by above-mentioned quality thorough mixing circulation,
(3) of the fracturing fluid preparation:
Of the fracturing fluid proportioning: get above-mentioned base fluid 99.2kg, crosslinked fluid 0.5kg;
The blending process process is: under stirring condition that base fluid and crosslinked fluid is even by above-mentioned quality thorough mixing, and to form full-bodied liquid.
Embodiment 2 (the stratum buried depth >=2700m)
Basic identical with embodiment 1, difference is: the proportioning of base fluid: high salinity surface water 98.2kg, chelating solubility promoter 0.15kg, thickening material 0.4kg, sterilant 0.15kg, clay stabilizer 0.5kg, breakdown of emulsion cleanup additive 0.5kg, chelate stabilizer 0.1kg;
The proportioning of crosslinked fluid: water 50kg, organic crosslinking agent 50kg, gel breaker 0.35kg;
Of the fracturing fluid proportioning: base fluid 99.5kg, crosslinked fluid 0.8kg.
Embodiment 3 (1700m≤stratum buried depth≤2200m)
Basic identical with embodiment 1, difference is: the proportioning of base fluid: high salinity surface water 98.3kg, chelating solubility promoter 0.15kg, thickening material 0.35kg, sterilant 0.10kg, clay stabilizer 0.5kg, 0.5 part of breakdown of emulsion cleanup additive, chelate stabilizer 0.1kg;
The proportioning of crosslinked fluid: water 50kg, organic crosslinking agent 50kg, gel breaker 0.35kg;
Of the fracturing fluid proportioning: base fluid 99.3kg, crosslinked fluid 0.6kg;
Embodiment 4
Basic identical with embodiment 1, difference is: described thickening material is the verivate of natural plant guanidine glue, i.e. hydroxypropyl guanidine glue HPG, and its molecular structural formula is following: (its molecular weight is at 20-30 ten thousand)
Figure BDA00002007143400061
The HPG molecular structure
Described chelating solubility promoter is the mixture of poly-phosphate and YD 30, and YD 30 ethylenediaminetetraacetic acid, this chelating solubility promoter have high salinity, the effect of promotion guanidine glue swollen that suppresses water quality.Described sterilant is the nonionic non-oxidative bactericide, has characteristics such as efficient, wide spectrum, low toxicity, compatibleness are good.Described clay stabilizer is the long-acting low injury type clay stabilizer of organic low molecular class, and it has high-affinity to surface of clay, has overcome the characteristics of macromolecule positively charged ion obstruction pore throat, and the hole injury is little, and anti-swollen effect is obvious.Described breakdown of emulsion cleanup additive is the composite reactive systems that forms of nonionogenic tenside; Overcome the absorption of cationic cleanup additive and reduced the shortcoming of its effective concentration; During the whole discharge opeing; The row of helping acts on obviously, can prevent the change of rock wettability simultaneously and prevent, abolishes the working fluid body and crude oil formation milk sap.Described chelate stabilizer is organic bases or mineral alkali, and described organic bases is one or both the mixture in trolamine, the thanomin, and described mineral alkali is a sodium hydroxide, selects trolamine here for use.Described organic crosslinking agent is the organic chelated highly enriched linking agent of the crosslinked usefulness of vegetable jelly, has crosslinked wide ranges, consumption is little, crosses crosslinked not bleed; Low temperature frozen glue is embrittlement not, and aquation is thorough, and low temperature does not return glue; Frozen glue temperature resistance shear resistant is strong; Take grittiness and can wait characteristics well, crosslinked time of lag 0.5-2min, temperature resistant capability is greater than 70 ℃.Described gel breaker is any one in ammonium persulphate, Potassium Persulphate, ydrogen peroxide 50, the Lucidol, selects ammonium persulphate here for use.
Embodiment 5
1, on-the-spot dosing
The chelating solubility promoter CSO-1 of 0.15kg is added the 10min that circulates in the high salinity surface water of 98.35kg; Treat that chelating solubility promoter CSO-1 mixes the back adds 0.4kg successively by the prescription order according to conventional fracturing liquid compound method guanidine glue CJ2-6 in jar; 0.15kg sterilant CJSJ-2; 0.5kg clay stabilizer COP-1, about circulation 10min, obtained Performance Detection data sheet as shown in the table behind the breakdown of emulsion cleanup additive CF-5D of the chelate stabilizer CST-1 of 0.1kg and 0.5kg.Guanidine matrix liquid is in the big jar of guanidine matrix liquid that configures, and the base fluid viscosity that tank deck and pot bottom divide is between 36-48mpas, and pH value is evenly distributed between 8.5-9, leaves standstill no layering and precipitating phenomenon, meets construction requirement fully.Linking agent is blended in a 2m uniformly by the linking agent JL-2 of 50kg, the water of 50kg and the gel breaker APS of 0.35kg 3The pond in, squeeze into truck-mounted blender by crosslinked pump during construction.Under stirring condition, 99.5kg base fluid and 0.5kg crosslinked fluid thorough mixing is even, to form full-bodied liquid.Above-mentioned raw materials available from producer with embodiment 1.Table 1 is seen in 195-34 wellblock, ground on-the-spot fracturing liquid Performance Detection data sheet (2h detects after the dosing)
(table 1)
Figure BDA00002007143400071
2, pressure break situation
Crosslinked beguine is controlled in 100:0.5-0.8 (the crosslinked ratio of 195-34 well the be 100:0.6) scope according to field condition in pressing crack construction process.In whole construction course, guanidine matrix liquid can both be well crosslinked on truck-mounted blender, the frozen glue toughness after crosslinked with take grittiness can be all fine, can under different sand concentration, hang.The long 8 layers of epimere construction results of ground 195-34 well: formation-parting pressure 29.2MPa adds 20/40 order low-density ceramsite 35m 3, discharge capacity 2.408m 3/ min, about WP 28.4Mpa, sand is than 33.6%, and the long 8 layers of hypomere construction results of ground 195-34 well: the broken 33.9Mpa that presses in stratum adds 20/40 order low-density ceramsite 35m 3, discharge capacity, 2.404m 3About/min WP 24.8MPa, sand is than 33.7%.Twice construction all requires steadily to promote the sand ratio according to working design, and whole fracturing process is very well.(seeing illustrated in figures 1 and 2)
3, broken glue situation
About the average buried depth 2685m of Ji's plateau ground head of district 8 reservoirs, 81.2 ℃ of temperature.Improve the back system, in construction process, obtained good effect.Aspect broken glue, except in linking agent, adding the hydrated agent by design, the ratio wedge shape according to 0.01%~0.03%~0.05%~0.07%~0.09% when pressure break also is left about 30 minutes adds hydrated agent to guarantee brokenly glue.195-34 well long 8 two-layer pressure breaks in ground add hydrated agent 112Kg, and artificial wedge shape adds hydrated agent 28Kg on truck-mounted blender, return the viscosity of discharge opeing in the time of 30 ℃ and all be controlled at below the 10mpas, meets the related standards of complete fracturing liquid rubber-breaking.This well is produced pure oily 18.36m daily through examination row 3/ d has obtained construction effect preferably.
Simultaneously, also like the effect analysis of the fracturing liquid Performance Detection of embodiment 5, pressure break situation, broken glue situation, its result effect with embodiment 5 basically is consistent to the fracturing liquid of the foregoing description 1-4 in the present invention.
Above-mentioned chelating solubility promoter is chelating solubility promoter CSO-1; Thickening material is guanidine glue CJ2-6; Sterilant is sterilant CJSJ-2, and clay stabilizer is clay stabilizer COP-1, and chelate stabilizer is that chelate stabilizer CST-1, breakdown of emulsion cleanup additive are breakdown of emulsion cleanup additive CF-5D; Organic crosslinking agent is that linking agent JL-2, gel breaker are gel breaker APS, the above-mentioned trade name that is.
Above-mentioned raw materials is respectively available from following unit: Xianyang producer of branch office of Qingyang Changqing Down-hole Oilfield Auxiliaries Co., Ltd., and the address: the Xianyang, Shanxi province city is exposed to the sun seven the tunnel, sales department's phone: 02986565388; Shaanxi treasuredization science and technology limited Company, address: No. 38, Chen Cang main road, Chinese Baoji, Shaanxi province city, home sale and Service Phone :+86-917-28538992853896; The good commerce and trade ltd of ploughing of Linyi City, the address: Linyi City Linyi City chemistry city B district, Shandong Province 358, phone: 860,539 3127717, fax: 86 0,539 3127393; The Xi'an is contained and is reached chemical industry trade Co., Ltd, address: No. 62, eternally happy road, Xian City, Shanxi Province, sales department's contact details, phone: 029-62293991, fax: 029-62293991; Xi'an milky way Raw Materials Company of Chemical Industry, address: Daxing, Xi'an, Shaanxi No. 301 northwest states in West Road prosperous Chemical market south gate east row B-8 number, phone: 029-84410177, fax: 029-62983765.
Part that present embodiment is not described in detail and english abbreviation belong to the common practise of the industry, can search on the net, here not narration one by one.

Claims (10)

1. anti-high salinity water quality fracturing liquid is characterized in that: fracturing liquid suppresses the water quality high salinity by containing, promote the base fluid of guanidine glue swollen chelating solubility promoter and chelate stabilizer and crosslinked fluid is formed and with base fluid and crosslinked fluid thorough mixing in proportion;
Its technological process is:
(1) preparation of base fluid:
The proportioning of base fluid:
98.2~98.65 parts of high salinity surface water, 0.1~0.15 part of chelating solubility promoter, 0.3~0.4 part of thickening material, 0.1~0.15 part in sterilant, clay stabilizer 0.3-0.5 part, 0.5 part of breakdown of emulsion cleanup additive, 0.05~0.1 part of chelate stabilizer;
The blending process process is: under with pump circulation or whisking appliance condition of stirring; The chelating solubility promoter, sterilant, thickening material, clay stabilizer, breakdown of emulsion cleanup additive and the chelate stabilizer that in above-mentioned mass parts high salinity surface water, successively slowly add above-mentioned mass parts; Continue to circulate or stirred 30 minutes; So that liquid mixing is abundant, the abundant swelling of thickening material forms uniform liquid;
(2) preparation of crosslinked fluid:
The proportioning of crosslinked fluid: 50 parts in water, 50 parts of organic crosslinking agents, 0.35 part of gel breaker;
The blending process process is: water and linking agent is even by above-mentioned mass parts thorough mixing circulation;
(3) of the fracturing fluid preparation:
Of the fracturing fluid proportioning: 99.2~99.5 parts of base fluids, crosslinked fluid 0.5-0.8 part;
The blending process process is: under stirring condition that base fluid and crosslinked fluid is even by above-mentioned mass parts thorough mixing, and to form full-bodied liquid.
2. a kind of anti-high salinity water quality fracturing liquid according to claim 1, it is characterized in that: described thickening material is the verivate of natural plant guanidine glue, i.e. hydroxypropyl guanidine glue HPG, its molecular structural formula is following:
Figure FDA00002007143300021
3. a kind of anti-high salinity water quality fracturing liquid according to claim 1, it is characterized in that: described chelating solubility promoter is the mixture of poly-phosphate and YD 30.
4. a kind of anti-high salinity water quality fracturing liquid according to claim 1, it is characterized in that: described sterilant is the nonionic non-oxidative bactericide.
5. a kind of anti-high salinity water quality fracturing liquid according to claim 1 is characterized in that: described clay stabilizer is the long-acting low injury type clay stabilizer of organic low molecular class, and molecular weight is at 300-800.
6. a kind of anti-high salinity water quality fracturing liquid according to claim 1; It is characterized in that: described breakdown of emulsion cleanup additive is the composite reactive systems that forms of nonionogenic tenside; The wetting ability that can keep rock prevents to abolish the milk sap of working fluid body and crude oil formation.
7. a kind of anti-high salinity water quality fracturing liquid according to claim 1; It is characterized in that: described chelate stabilizer is organic bases or mineral alkali; Described organic bases is one or both a mixture of trolamine, thanomin, and described mineral alkali is a sodium hydroxide.
8. a kind of anti-high salinity water quality fracturing liquid according to claim 1; It is characterized in that: described organic crosslinking agent is the organic chelated highly enriched linking agent of the crosslinked usefulness of vegetable jelly, crosslinked time of lag 0.5-2min, temperature resistant capability >=70 ℃; Cross-linking properties is good, the linking agent of lower concentration viscosifying agent.
9. a kind of anti-high salinity water quality fracturing liquid according to claim 1, it is characterized in that: described gel breaker is any one in ammonium persulphate, Potassium Persulphate, ydrogen peroxide 50, the Lucidol; Except that in linking agent, adding according to quantity, the variation of FT during also according to pressure break, artificial wedge shape adding on truck-mounted blender.
10. a kind of anti-high salinity water quality fracturing liquid according to claim 1; It is characterized in that: described chelating solubility promoter is chelating solubility promoter CSO-1, and thickening material is guanidine glue CJ2-6, and sterilant is sterilant CJSJ-2; Clay stabilizer is clay stabilizer COP-1; Chelate stabilizer is that chelate stabilizer CST-1, breakdown of emulsion cleanup additive are breakdown of emulsion cleanup additive CF-5D, and organic crosslinking agent is that linking agent JL-2, gel breaker are gel breaker APS, the above-mentioned trade name that is.
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CN114561203A (en) * 2022-04-11 2022-05-31 西南石油大学 High-salinity water-based delayed cross-linking gel fracturing fluid and preparation method thereof
RU2793051C1 (en) * 2022-06-09 2023-03-28 Михаил Васильевич Чертенков Polysaccharide gel composition for hydraulic fracturing

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CN104087281B (en) * 2014-07-13 2016-10-19 中国石油集团渤海钻探工程有限公司 High capability of anti-salt polymer fracturing fluid and preparation method thereof
CN106520108A (en) * 2015-09-10 2017-03-22 中国石油天然气股份有限公司 Fracturing fluid and preparation method thereof
CN109679641A (en) * 2018-11-14 2019-04-26 中国石油集团西部钻探工程有限公司 The fracturing fluid and preparation method thereof that high salinity salt lake saline is prepared
CN109679641B (en) * 2018-11-14 2021-10-29 中国石油天然气集团有限公司 Fracturing fluid prepared from high-salinity salt lake water and preparation method thereof
CN111454706A (en) * 2020-01-21 2020-07-28 克拉玛依金昇油田助剂有限公司 Naphthenic petroleum sulfonate compound oil displacement agent for fracturing fluid and preparation method thereof
RU2758828C1 (en) * 2020-10-28 2021-11-02 Общество с ограниченной ответственностью «Газпромнефть Научно-Технический Центр» Hydraulic fracturing fluid based on highly mineralized water, method for its preparation and method for processing the formation with its use
CN113388383A (en) * 2021-06-17 2021-09-14 中国海洋石油集团有限公司 Chelating regulator and application thereof
CN114561203A (en) * 2022-04-11 2022-05-31 西南石油大学 High-salinity water-based delayed cross-linking gel fracturing fluid and preparation method thereof
CN114561203B (en) * 2022-04-11 2023-08-29 西南石油大学 High-mineralization water-based delayed crosslinking gel fracturing fluid and preparation method thereof
RU2793051C1 (en) * 2022-06-09 2023-03-28 Михаил Васильевич Чертенков Polysaccharide gel composition for hydraulic fracturing

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