CN106281278A - A kind of oil well, water injection well economic benefits and social benefits de-plugging agent and using method thereof - Google Patents
A kind of oil well, water injection well economic benefits and social benefits de-plugging agent and using method thereof Download PDFInfo
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- CN106281278A CN106281278A CN201610651955.2A CN201610651955A CN106281278A CN 106281278 A CN106281278 A CN 106281278A CN 201610651955 A CN201610651955 A CN 201610651955A CN 106281278 A CN106281278 A CN 106281278A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
- E21B37/06—Methods or apparatus for cleaning boreholes or wells using chemical means for preventing, limiting or eliminating the deposition of paraffins or like substances
Abstract
A kind of oil well, water injection well economic benefits and social benefits de-plugging agent and using method, economic benefits and social benefits de-plugging agent is made up of A agent prescription, B agent prescription, C agent prescription, and each formula emphasizes particularly on different fields de-plugging type, has again complementary synergism；Wherein A agent prescription is prepared by high active surfactant, is used for releasing organic species blocking in oil-water well, increases crude oil flow physical property；B agent prescription is prepared by acidic chemical medicament, is used for releasing inorganic species blocking in oil-water well, circulation expansion duct, improves permeability；C agent prescription, by neutralizing initiator preparation, is used for neutralizing residual acid, promotes that residual acid, residue return row, prevent secondary pollution from blocking, and extends de-plugging effect duration, improves de-plugging success rate.Using method is different because well is not different.It is characteristic of the invention that one-stop operation can release the blocking of oil well or the simultaneous organic species of water injection well and inorganic species, by powdered for tamper corrosion, during well-flushing, residue residual liquid is thoroughly returned discharge well head, there is de-plugging success rate high, the feature of de-plugging limited period length.
Description
Technical field
The present invention relates to old well Oil reserve digging field, oil field, particularly to a kind of oil well, water injection well economic benefits and social benefits de-plugging agent and
Using method, is used for releasing simultaneous organic species in oil well, water injection well and blocks with inorganic species, solve existing routine
The problem that the plugging removal effect that formation blockage is existed by de-plugging agent is poor, effect duration is short or forms secondary pollution blocking.
Background technology
The reason that oil well oil reservoir produces blocking with water injection well water filling layer is divided into two big classes.One class is inorganic species, because of drilling well
Process, operation process, treatment process, well workover process can produce solid phase particles, rock debris, ferrum oxide, earth cement etc. and produce
Raw blocking；Another kind of is organic species, as in crude oil, waxiness, colloid, asphalitine separate out caking, the gathering of saprophytic bacteria metabolite
Blocking Deng generation；Both blockings all can have a strong impact on the normal production in oil field；As time goes on, oil well, water injection well
Entering tail period stage, stratum and wellbore conditions to be deteriorated, above-mentioned blocking can be the most serious；Conventional acidifying class breaking block treatment
Efficiency is more and more lower again, more and more higher to the injury rate on stratum；It is thus desirable to scientific and technical innovation, constantly invent acid targetedly
Dissolve the new formula of blocking agent and use new technology, reducing the injury rate to stratum, recovering or improve in-place permeability, increasing crude oil and produce
Amount.
By for many years oil well, water injection well plugging reason being thought: in same well, organic species and inorganic species
Blocking exists simultaneously, simply emphasizes particularly on different fields；Blocking position is typically in down-hole 500～3000 meters of degree of depth, and difficulty is to shift to an earlier date
Measure plugging reason and blocking type；Though conventional de-plugging agent formula and use technique have certain plugging removal effect, but technique exists such as
Lower deficiency: a kind of formula can not release inorganic species and the blocking of organic species simultaneously, and reason is: chemical plugging removal agent divides two
Kind, one is acid de-plugging agent, is mainly used in releasing the blocking of inorganic species, the most invalid to the blocking of organic species；Another kind is
Nonacid de-plugging agent both surfactants, are mainly used in releasing the blocking of organic species, the most invalid to the blocking of inorganic species；And two
After kind de-plugging agent is compounding, because of rejection, it is only able to display a kind of effect, or reduces its main effect；Conventional de-plugging agent formula is usual
Only using one of which, plugging removal effect is not good enough；2. formula effect is single；Surfactant is used for oil well, water injection well de-plugging, effect
Should possess reduction interfacial tension, molten wax viscosity reduction, wettability reversal, be oil-in-water state by the Water-In-Oil State Transferring of formation crude beginning
Deng, when above four indices is in high value, the blocking of organic species could be released and extends de-plugging effect duration；Conventional non-
Acid de-plugging agent only has an one of which index, or has many index but numerical value is the lowest；3. residual liquid residue returns row thoroughly, shape
Become secondary blocking.
Summary of the invention
It is an object of the invention to provide a kind of oil well, water injection well economic benefits and social benefits de-plugging agent, solve existing conventional de-plugging agent to stratum
The problem that the plugging removal effect that blocking exists is poor, effect duration is short or forms secondary pollution blocking.
To achieve these goals, technical scheme provided by the present invention is:
A kind of oil well, water injection well economic benefits and social benefits de-plugging agent, by A agent prescription, B agent prescription, C agent prescription by 1～3:1～8:1～3
Volume ratio is constituted；
Wherein the mass percent of A agent prescription consists of: fluorine carbon 2.0～4.0%, sodium alkyl benzene sulfonate 1.0～4.0%,
Tween 80 1.0～3.0%, polyethenoxy alkanolamide 0.5～2.0%, polyoxethylene octylphenyl phenol ether 0.5～2.0%, surplus
For clear water, above constituent mass percentage ratio sum is 100%；
Wherein the mass percent of B agent prescription consists of: hydrochloric acid 2.0～10.0%, Fluohydric acid. 1.0～3.0%, formic acid
2.0～3.0%, ammonium fluoride 1.0～2.0%, phosphatase 11 .0～3.0%, fluoboric acid 0.5～1.0%, bromination octadecylpyridinium
1.0～3.0%, polyvinyl alcohol 1.0～2.0%, chlorine dioxide 1.0～2.0%, acetic acid 0.5～1.5%, surplus is clear water, with
Upper constituent mass percentage ratio sum is 100%；
Wherein the mass percent of C agent prescription consists of: ammonium chloride 5.0～10.0%, sodium nitrite 5.0～10.0%,
Surplus is clear water, and above constituent mass percentage ratio sum is 100%.
Wherein in C agent prescription, the mass ratio of ammonium chloride and sodium nitrite is 1:1.
The above-mentioned a kind of oil well that it is a further object of the present invention to provide, the using method of water injection well economic benefits and social benefits de-plugging agent, specifically
Implement according to the following steps:
The first step, injection A agent prescription:
By the A agent prescription that mass concentration is 5.0～15.0%, inject and implement in de-plugging well；
Second step, injection B agent prescription and C agent prescription:
Respectively by mass concentration 11.0～the B agent prescription of 30.5% and mass concentration 10.0～20.0% C agent prescription first
In rear injection implemented de-plugging well；Injection order is different according to injection object difference, when de-plugging of well, first injects
C agent prescription, reinjects B agent prescription；When water injection well de-plugging, first inject B agent prescription, reinject C agent prescription.
The feature of the present invention also resides in,
De-plugging agent injection rate computing formula is:
πR2× n × k × (A+B+C)=E
Wherein, E is the total injection rate of de-plugging agent, unit m3；π is 3.14；R is plug removal radius, unit m；N is core intersection,
Unit m；K is oil reservoir porosity, unit %；A is A agent prescription volume ratio, and B is B agent prescription volume ratio, and C is C agent prescription volume
Ratio；A agent prescription, B agent prescription, C agent prescription volume ratio summation are 1.
The invention has the beneficial effects as follows, a kind of oil well of present invention offer, water injection well economic benefits and social benefits de-plugging agent, one-stop operation can solve
The blocking of oil removing well or the simultaneous organic species of water injection well and inorganic species, by powdered for tamper corrosion, during well-flushing
By the residue residual liquid thoroughly row of returning, reach de-plugging success rate high, the purpose of de-plugging effect duration length.
Detailed description of the invention
The present invention is further illustrated below by specific embodiment；
Embodiment 1
The de-plugging agent of the present embodiment is used for water injection well, A agent prescription, B agent prescription and C agent prescription press the volume of 1:2.5:2
Than constituting.
Wherein A agent prescription composition, mass concentration is: fluorine carbon 2.0%, sodium alkyl benzene sulfonate 1.0%, Tween 80 1.0%, poly-
Oxygen ethylene alkanolamide 0.5%, polyoxyethylene alkylamide 0.5%, mass concentration adds up to 5%, and surplus is clear water.
Wherein B agent prescription composition, mass concentration is: hydrochloric acid 2.0%, Fluohydric acid. 1.0%, formic acid 2.0%, ammonium fluoride
1.0%, phosphatase 11 .0%, fluoboric acid 0.5%, bromination octadecylpyridinium (OPB) 1.0%, polyvinyl alcohol 1.0%, chlorine dioxide
1.0%, acetic acid 0.5%, mass concentration adds up to 11%, and surplus is clear water.
Wherein C agent prescription composition, mass concentration is: ammonium chloride 5.0%, sodium nitrite 5.0%, and mass concentration adds up to
10%, surplus is clear water.
The total consumption of the present embodiment economic benefits and social benefits de-plugging agent designs: 3.14 × 32 (m) × 5 (m) × 11.7% × 1 ≈ 16.5 (m3)；
Economic benefits and social benefits de-plugging agent A agent, B agent, the total consumption of C agent are designed as 16.5m3, A agent prescription 3.0m3, B agent prescription 7.5m3, C agent prescription
6.0m3。
Its application process is as follows:
The first step injects A agent prescription 3.0m3, implantation quality concentration 5.0%, second step injects B agent prescription 7.5m3, inject matter
Amount concentration 11.0%, the 3rd step injects C agent prescription 6.0m3, implantation quality concentration 10.0%.
Field conduct effect: oil pressure 18.5MPa before measure, day injection allocation 20.0m3, daily water-injection rate 0.0m3；Oil pressure after measure
9.1MPa, day injection allocation 20.0m3, daily water-injection rate 20.0m3；Implementation result: this water injection well oil pressure declines 9.4MPa, daily water-injection rate increases
Add 20.0m3, meet a day injection allocation amount requirement.
Embodiment 2
The de-plugging agent of the present embodiment is used for water injection well, A agent prescription, B agent prescription and C agent prescription press the volume of 1.5:3:2
Than constituting.
Wherein A agent prescription composition, mass concentration is: fluorine carbon 2.5%, sodium alkyl benzene sulfonate 2.0%, Tween 80 2.0%, poly-
Oxygen ethylene alkanolamide 1.0%, polyoxyethylene alkylamide 1.0%, mass concentration adds up to 8.5%, and surplus is clear water.
Wherein B agent prescription composition, mass concentration is: hydrochloric acid 5.0%, Fluohydric acid. 1.5%, formic acid 1.5%, ammonium fluoride
1.6%, phosphatase 11 .7%, fluoboric acid 0.7%, bromination octadecylpyridinium (OPB) 2.0%, polyvinyl alcohol 1.5%, chlorine dioxide
1.5%, acetic acid 1.0%, mass concentration adds up to 18%, and surplus is clear water.
Wherein C agent prescription composition, mass concentration is: ammonium chloride 6.0%, sodium nitrite 6.0%, and mass concentration adds up to
12%, surplus is clear water.
The total consumption of the present embodiment economic benefits and social benefits de-plugging agent designs: 3.14 × 3.52 (m) × 6.4 (m) × 9.6% × 1 ≈ 24.0
(m3)；Economic benefits and social benefits de-plugging agent A agent, B agent, the total consumption of C agent are designed as 24.0m3, A agent prescription 6.0m3, B agent prescription 12.0m3, C agent is joined
Side 8.0m3。
Its application process is as follows:
The first step injects A agent prescription 6.0m3, implantation quality concentration 8.5%, second step injects B agent prescription 12.0m3, inject
Mass concentration 18.0%, the 3rd step injects C agent prescription 8.0m3, implantation quality concentration 12.0%.
Field conduct effect: oil pressure 20.6MPa before measure, day injection allocation 30.0m3, daily water-injection rate 2.1m3；Oil pressure after measure
11.2MPa, day injection allocation 30.0m3, daily water-injection rate 30.2m3, implementation result: this water injection well oil pressure declines 9.4MPa, daily water-injection rate increases
Add 28.1m3, meet a day injection allocation amount requirement.
Embodiment 3
The de-plugging agent of the present embodiment is used for oil well, A agent prescription, B agent prescription and C agent prescription press the volume ratio structure of 1:1:1
Become.
Wherein A agent prescription composition, mass concentration is: fluorine carbon 3.0%, sodium alkyl benzene sulfonate 3.0%, Tween 80 2.5%, poly-
Oxygen ethylene alkanolamide 1.7%, polyoxyethylene alkylamide 1.8%, mass concentration adds up to 12%, and surplus is clear water.
Wherein B agent prescription composition, mass concentration is: hydrochloric acid 8.0%, Fluohydric acid. 2.5%, formic acid 2.8%, ammonium fluoride
1.7%, phosphoric acid 2.5%, fluoboric acid 0.8%, bromination octadecylpyridinium (OPB) 2.5%, polyvinyl alcohol 1.8%, chlorine dioxide
1.2%, acetic acid 1.2%, mass concentration adds up to 25%, and surplus is clear water.
Wherein C agent prescription composition, mass concentration is: ammonium chloride 8.0%, sodium nitrite 8.0%, and mass concentration adds up to
16%, surplus is clear water.
The total consumption of the present embodiment economic benefits and social benefits de-plugging agent designs: 3.14 × 3.12 (m) × 4.0 × 14.5% × 1 ≈ 18.0 (m3)；
De-plugging agent A agent, B agent, the total consumption of C agent are designed as 18.0m3, A agent prescription 6.0m3, B agent prescription 6.0m3, C agent prescription 6.0m3。
Its using method is as follows:
The first step injects A agent prescription 6.0m3, implantation quality concentration 12.0%, second step injects C agent prescription 6.0m3, inject
Mass concentration 16.0%, the 3rd step injects B agent prescription 6.0m3, implantation quality concentration 25.0%.
Field conduct effect: measure production fluid day before yesterday 1.51m3, day oil-producing 0.12t, moisture content 90.6%；Day production fluid after measure
8.66m3, day oil-producing 4.2t, moisture content 42.9%；Implementation result: day production fluid increase 7.15m3, day oil-producing increase 4.08t.
Embodiment 4
The de-plugging agent of the present embodiment is used for oil well, A agent prescription, B agent prescription and C agent prescription press the volume ratio structure of 3:8:3
Become.
Wherein A agent prescription composition, mass concentration is: fluorine carbon 4.0%, sodium alkyl benzene sulfonate 4.0%, Tween 80 3.0%, poly-
Oxygen ethylene alkanolamide 2.0%, polyoxyethylene alkylamide 2.0%, mass concentration adds up to 15%, and surplus is clear water.
Wherein B agent prescription composition, mass concentration is: hydrochloric acid 10.0%, Fluohydric acid. 3.0%, formic acid 3.0%, ammonium fluoride
2.0%, phosphatase 11 .0%, fluoboric acid 3.0%, bromination octadecylpyridinium (OPB) 3.0%, polyvinyl alcohol 2.0%, chlorine dioxide
2.0%, acetic acid 1.5%, mass concentration adds up to 30.5%, and surplus is clear water.
Wherein C agent prescription composition, mass concentration is: ammonium chloride 10.0%, sodium nitrite 10.0%, and mass concentration adds up to
20%, surplus is clear water.
The total consumption of the present embodiment economic benefits and social benefits de-plugging agent designs: 4.0 (m) × 3.14 × 7.6 (m) × 14.6% × 1 ≈ 56.0
(m3)；De-plugging agent A agent, B agent, the total consumption of C agent are designed as 53.0m3, A agent prescription 12.0m3, B agent prescription 32.0m3, C agent prescription
12.0m3。
Its using method is as follows:
The first step injects A agent prescription 12.0m3, implantation quality concentration 15.0%, second step injects C agent prescription 12.0m3, note
Entering mass concentration 20.0%, the 3rd step injects B agent prescription 32.0m3, implantation quality concentration 30.5%.
Field conduct effect: measure production fluid day before yesterday 0.8m3, day oil-producing 0.1t, moisture content 85.3%；Day production fluid after measure
7.8m3, day oil-producing 5.4t, moisture content 18.6%；Implementation result: day production fluid increase 7.0m3, day oil-producing increase 5.4t.
Particular embodiments described above, has been carried out the purpose of the present invention, technical scheme and beneficial effect the most in detail
Describe in detail bright, be not intended to the present invention is done any restriction；For the technical field of the invention, without departing from essence structure of the present invention
On the premise of think of, it is also possible to make some simple deduction or replace, all should be considered as within the scope of the claims in the present invention.
The principle of the present invention is:
The present invention is a prescription system, is made up of A agent prescription, B agent prescription, C agent prescription, and each formula emphasizes particularly on different fields de-plugging
Type, has again complementary synergism, is a set of comprehensive, multi-functional for oil well, the scientific and technological formula system of water injection well；
Wherein the principle of A agent prescription is: A agent prescription is prepared by high active surfactant, reduces in surface tension, molten
Wax viscosity reduction, moistening reversion, become 4 indexs such as oil-in-water state to be in higher number the Water-In-Oil State Transferring that formation crude begins
Value, by reducing surface tension, by organic species tampers such as perforated interval and the waxiness of near wellbore zone absorption, colloid, asphalitines
Strip down；By molten wax viscosity reduction effect, by bulk or graininess tamper and water dissolution emulsifying, it is beneficial to tamper with stratum
Water discharges stratum；It is oil-in-water state by Water-In-Oil State Transferring, reduces the resistance of oil migration, beneficially crude oil and blocking
Thing discharges well head；By wettability reversal effect, the lipophile of ground layer original being reversed to hydrophilic, follow-up crude oil is the most again
It is adsorbed in surface of stratum.
Wherein the principle of B agent prescription is: B agent prescription is host preparation by acidic chemical medicament, for corrosion incrustation scale, raw
Thing limestone chip, fracturing fluid residue, drilling fluid mud cake, the blocking of the inorganic species such as clay cement, circulation expansion duct, improve ground
Layer permeability,
Wherein the principle of C agent prescription is: C agent prescription, by neutralizing initiator preparation, is used for neutralizing residual acid, and produces high temperature
Suppress slug, counter push away residual acid, residue to pit shaft, return discharge well head with flushing fluid, prevent secondary pollution from blocking, extend de-plugging effective
Phase.
Claims (3)
1. an oil well, water injection well economic benefits and social benefits de-plugging agent, it is characterised in that by A agent prescription, B agent prescription, C agent prescription by 1～3:1
～the volume ratio of 8:1～3 is constituted；
Wherein the mass percent of A agent prescription consists of: fluorine carbon 2.0～4.0%, sodium alkyl benzene sulfonate 1.0～4.0%, tween
801.0～3.0%, polyethenoxy alkanolamide 0.5～2.0%, polyoxethylene octylphenyl phenol ether 0.5～2.0%, surplus is clear
Water, above constituent mass percentage ratio sum is 100%；
Wherein the mass percent of B agent prescription consists of: hydrochloric acid 2.0～10.0%, Fluohydric acid. 1.0～3.0%, formic acid 2.0～
3.0%, ammonium fluoride 1.0～2.0%, phosphatase 11 .0～3.0%, fluoboric acid 0.5～1.0%, bromination octadecylpyridinium 1.0～
3.0%, polyvinyl alcohol 1.0～2.0%, chlorine dioxide 1.0～2.0%, acetic acid 0.5～1.5%, surplus is clear water, above group
Point mass percent sum is 100%；
Wherein the mass percent of C agent prescription consists of: ammonium chloride 5.0～10.0%, sodium nitrite 5.0～10.0%, surplus
For clear water, above constituent mass percentage ratio sum is 100%；
Wherein in C agent prescription, the mass ratio of ammonium chloride and sodium nitrite is 1:1.
2. based on a kind of oil well described in claim 1, the using method of water injection well economic benefits and social benefits de-plugging agent, it is characterised in that implement
Step is:
The first step, injection A agent prescription:
By the A agent prescription that mass concentration is 5.0～15.0%, inject and implement in de-plugging well；
Second step, is injected separately into B agent prescription and C agent prescription:
By mass concentration 11.0～the B agent prescription of 30.5% and mass concentration 10.0～the C agent prescription of 20.0%, inject and implemented
In de-plugging well；Injection order is different according to injection object difference, when de-plugging of well, first injects C agent prescription, then notes
Enter B agent prescription；When water injection well de-plugging, first inject B agent prescription, reinject C agent prescription.
3. based on a kind of oil well described in claim 2, the using method of water injection well economic benefits and social benefits de-plugging agent, it is characterised in that de-plugging
Agent injection rate computing formula is:
πR2× n × k × (A+B+C)=E
Wherein, E is the total injection rate of de-plugging agent, unit m3；π is 3.14；R is plug removal radius, unit m；N is core intersection, unit m；
K is oil reservoir porosity, unit %；A is A agent prescription volume ratio, and B is B agent prescription volume ratio, and C is C agent prescription volume ratio；A agent is joined
Side, B agent prescription, C agent prescription volume ratio summation are 1.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111234794A (en) * | 2020-03-18 | 2020-06-05 | 北京大德广源石油技术服务有限公司 | Composite blocking remover and application method thereof |
| CN111607376A (en) * | 2020-04-23 | 2020-09-01 | 大庆宇涵井下作业技术服务有限公司 | Ternary composite flooding blockage removal agent for ternary flooding injection well augmented injection technology |
| CN113464095A (en) * | 2020-03-30 | 2021-10-01 | 中国石油天然气股份有限公司 | Acidizing and blockage removing method for sandstone high-temperature and high-pressure gas well shaft |
| WO2022216899A1 (en) * | 2021-04-07 | 2022-10-13 | Saudi Arabian Oil Company | Method to remove well bore damage using thermochemical fluid |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5497830A (en) * | 1995-04-06 | 1996-03-12 | Bj Services Company | Coated breaker for crosslinked acid |
| RU2242605C1 (en) * | 2003-08-15 | 2004-12-20 | ЗАО "Химеко-ГАНГ" | Acid composition for treating terrigenous oil reservoirs and a method for acid treatment of the bottom zone of formation |
| CN101033685A (en) * | 2007-04-07 | 2007-09-12 | 辽河石油勘探局 | Combined removing plug by acid technology of oil well |
| CN101285378A (en) * | 2008-05-09 | 2008-10-15 | 大庆汇联技术开发有限公司 | HAS composite plug removal technology |
| CN103881674A (en) * | 2013-10-18 | 2014-06-25 | 中国石油化工股份有限公司 | Combined blocking remover for polymer injection blocking well section plug and preparation method and application of combined blocking remover |
| CN104612650A (en) * | 2014-12-31 | 2015-05-13 | 中国石油天然气股份有限公司 | Oxidizing composite acid deep acidizing plugging removal method used for acidizing plugging removal of water injection well |
| CN104946232A (en) * | 2014-03-27 | 2015-09-30 | 中国石油化工股份有限公司 | Mixed alcohol-acid liquid system for compact sandstone reservoir |
-
2016
- 2016-08-10 CN CN201610651955.2A patent/CN106281278B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5497830A (en) * | 1995-04-06 | 1996-03-12 | Bj Services Company | Coated breaker for crosslinked acid |
| RU2242605C1 (en) * | 2003-08-15 | 2004-12-20 | ЗАО "Химеко-ГАНГ" | Acid composition for treating terrigenous oil reservoirs and a method for acid treatment of the bottom zone of formation |
| CN101033685A (en) * | 2007-04-07 | 2007-09-12 | 辽河石油勘探局 | Combined removing plug by acid technology of oil well |
| CN101285378A (en) * | 2008-05-09 | 2008-10-15 | 大庆汇联技术开发有限公司 | HAS composite plug removal technology |
| CN103881674A (en) * | 2013-10-18 | 2014-06-25 | 中国石油化工股份有限公司 | Combined blocking remover for polymer injection blocking well section plug and preparation method and application of combined blocking remover |
| CN104946232A (en) * | 2014-03-27 | 2015-09-30 | 中国石油化工股份有限公司 | Mixed alcohol-acid liquid system for compact sandstone reservoir |
| CN104612650A (en) * | 2014-12-31 | 2015-05-13 | 中国石油天然气股份有限公司 | Oxidizing composite acid deep acidizing plugging removal method used for acidizing plugging removal of water injection well |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111234794A (en) * | 2020-03-18 | 2020-06-05 | 北京大德广源石油技术服务有限公司 | Composite blocking remover and application method thereof |
| CN113464095A (en) * | 2020-03-30 | 2021-10-01 | 中国石油天然气股份有限公司 | Acidizing and blockage removing method for sandstone high-temperature and high-pressure gas well shaft |
| CN113464095B (en) * | 2020-03-30 | 2023-02-07 | 中国石油天然气股份有限公司 | Acidizing and blockage removing method for sandstone high-temperature and high-pressure gas well shaft |
| CN111607376A (en) * | 2020-04-23 | 2020-09-01 | 大庆宇涵井下作业技术服务有限公司 | Ternary composite flooding blockage removal agent for ternary flooding injection well augmented injection technology |
| WO2022216899A1 (en) * | 2021-04-07 | 2022-10-13 | Saudi Arabian Oil Company | Method to remove well bore damage using thermochemical fluid |
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