CN105569605A - Method for improving chemical water plugging success rate of low-permeability fractured reservoir oil well - Google Patents
Method for improving chemical water plugging success rate of low-permeability fractured reservoir oil well Download PDFInfo
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- CN105569605A CN105569605A CN201510927913.2A CN201510927913A CN105569605A CN 105569605 A CN105569605 A CN 105569605A CN 201510927913 A CN201510927913 A CN 201510927913A CN 105569605 A CN105569605 A CN 105569605A
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- sleeve pipe
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 69
- 239000000126 substance Substances 0.000 title claims abstract description 40
- 239000003129 oil well Substances 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 24
- 238000012360 testing method Methods 0.000 claims abstract description 16
- 229920000642 polymer Polymers 0.000 claims abstract description 15
- 238000010276 construction Methods 0.000 claims abstract description 13
- 238000006073 displacement reaction Methods 0.000 claims abstract description 13
- 230000035699 permeability Effects 0.000 claims description 17
- 239000002981 blocking agent Substances 0.000 claims description 16
- 239000004568 cement Substances 0.000 claims description 13
- 239000012530 fluid Substances 0.000 claims description 13
- 238000002347 injection Methods 0.000 claims description 13
- 239000007924 injection Substances 0.000 claims description 13
- -1 phenolic aldehyde Chemical class 0.000 claims description 13
- 230000007423 decrease Effects 0.000 claims description 11
- 239000007863 gel particle Substances 0.000 claims description 11
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 claims description 8
- 230000005494 condensation Effects 0.000 claims description 7
- 238000009833 condensation Methods 0.000 claims description 7
- 239000000243 solution Substances 0.000 claims description 7
- 239000007864 aqueous solution Substances 0.000 claims description 6
- GNFTZDOKVXKIBK-UHFFFAOYSA-N 3-(2-methoxyethoxy)benzohydrazide Chemical compound COCCOC1=CC=CC(C(=O)NN)=C1 GNFTZDOKVXKIBK-UHFFFAOYSA-N 0.000 claims description 4
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 claims description 4
- 235000010299 hexamethylene tetramine Nutrition 0.000 claims description 4
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 claims description 4
- 229960004011 methenamine Drugs 0.000 claims description 4
- 229920002401 polyacrylamide Polymers 0.000 claims description 4
- 125000000129 anionic group Chemical group 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 201000004569 Blindness Diseases 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract description 2
- 238000005086 pumping Methods 0.000 abstract 2
- 230000015271 coagulation Effects 0.000 abstract 1
- 238000005345 coagulation Methods 0.000 abstract 1
- 238000004132 cross linking Methods 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 14
- 238000005516 engineering process Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
Landscapes
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Sealing Material Composition (AREA)
- Pipe Accessories (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention provides a method for improving the success rate of chemical water plugging of a low-permeability fractured reservoir oil well, which comprises the following steps: a. reading well closing pressure P before construction1And casing blowout flow Q1(ii) a b. Injecting clear water in a test mode, so that the oil casing, the casing and the casing valve are filled with water, and pressure test is carried out; c. injecting a chemical plugging agent slug i polymer phenolic gel; d. injecting chemical plugging agent slug ii pre-crosslinking particles; e. injecting a chemical plugging agent slug iii type high-strength curing system; f. forward and backward squeezing the displacement liquid; g. closing the well and waiting for coagulation; h. if the shut-in pressure and the casing blowout flow rate are not obviously reduced, returning to the step c to repeatedly execute until the shut-in pressure and the casing blowout flow rate are obviously reduced, and finishing injecting the plugging agent; i. pulling out the measure tubular column, and dredging the well to the bottom of the artificial well by using a drift size gauge; if the shaft is blocked, the scraper and the grinding shoe are arranged down to treat the shaft to the bottom of the shaft; j. and (5) putting the production string and pumping by a pump. The invention can effectively improve the success rate of water plugging of the oil well and avoid the blindness of directly pumping down the oil well after water plugging construction.
Description
Technical field
The invention belongs to technical field of petroleum industry, relate to the low permeability fractured type oil reservoir oil well shutoff method improved in oil recovery factor technology, a kind of specifically method improving low permeability fractured type oil reservoir chemical water plugging of oil well success rate.
Background technology
The long-term injecting water exploitation of low permeability fractured oil field and the impact by formation fracture, the non-homogeneity on stratum is serious, inject water along the channelling of Thief zone crack, oil well is caused to enter the High water cut production phase, water logging even rapidly, have impact on crude oil recovery percent of reserves, and the process of production fluid, considerably increase the cost of oil recovery.Therefore how effective shutoff is carried out to water-yielding stratum, control water ratio in oil well and rise, keep oilfield stable production and volume increase, become the problem that must solve in high water-cut reservoir development process.
It is take process matched therewith measure to inject chemical plugging agent shutoff high permeability zone or high yield water layer to reservoir that chemical water shutoff method is commonly used in oil field, realizes the object of oil well liquid-producing control water.Publication number be CN101787864A patent document discloses a kind of low permeability reservoir waterflooding reservoir Fractured water logging oil well shutoff method, four kinds of varying strength blocking agents are clamp-oned stratum with cementing truck or fracturing unit truck by respectively, finally inject displacement fluid, wait solidifying rear lower pump and produce.Also have publication number to be CN86108877A, denomination of invention is the patent document of " Zirconium gel water sealing agent ".
Different blocking agent slug is injected oil well by these existing water-plugging technologies respectively, replaces time condensation bundle and namely descends pump to produce, can only be produced and observe measure effect, and success rate is limited, generally about 30% by the later stage.Above document does not relate to the concrete grammar how improving chemical water plugging of oil well success rate.
Summary of the invention
The object of the invention is to propose one and be applicable to low permeability fractured type oil reservoir chemical water plugging of oil well method, to improve chemical water plugging of oil well success rate, administer oil well, reduce oil well production moisture, recover output.
Technical scheme of the present invention is: a kind of method improving low permeability fractured type oil reservoir chemical water plugging of oil well success rate, comprises the steps:
Shut-in pressure P before a, reading construction
1with sleeve pipe open flow flow Q
1;
B, injection test clear water, make water be full of tubing and casing, and examination sleeve pipe and sleeve valve, ensure that sleeve pipe is full of clear water, and pressure testing, do not sting and do not leak for qualified;
C, note chemical plugging agent slug I polymer phenolic aldehyde gel;
D, note chemical plugging agent slug II Weak gel particle;
E, note chemical plugging agent slug III high strength curing system;
F, positive and negative crowded displacement fluid;
After g, replacement, closing well is waited solidifying;
After h, time condensation bundle, read the rear shut-in pressure P of construction
2with sleeve pipe open flow flow Q
2if shut-in pressure and sleeve pipe open flow flow obviously do not reduce, then get back to step c, again note blocking agent, Hou Ning, till shut-in pressure and sleeve pipe open flow flow obviously decline, note blocking agent can terminate; The criterion that wherein shut-in pressure and sleeve pipe open flow flow obviously do not reduce is: P
2>=0.5P
1or Q
2>=0.5Q
1; The criterion that shut-in pressure and sleeve pipe open flow flow obviously decline is: P
2< 0.5P
1and Q
2< 0.5Q
1;
I, constructed after trip out measure tubing string, use drift size gauge tool drifting, drifting is to artificial bottom of a well; If be hampered, lower scraper, junk mill process pit shaft are to shaft bottom;
J, under enter flow string and pump and open and take out.
In above-mentioned steps b, the amount of injection test clear water is 30m
3, pressure test pressure is 25MPa; The amount noting chemical plugging agent slug I polymer phenolic aldehyde gel in step c is 300m
3; The amount noting chemical plugging agent slug II Weak gel particle in steps d is 300m
3; The amount noting chemical plugging agent slug III high strength curing system in step e is 100m
3; The each 30m of amount of positive and negative crowded displacement fluid in step f
3; In step g, after replacement, closing well waits the solidifying time is 24 hours.
Anionic water solution polyacrylamide solution, the methenamine aqueous solution of 0.2% and the resorcinol aqueous solution of 0.02% that in above-mentioned steps c, polymer phenolic aldehyde gel is 0.3% by mass ratio form.
In above-mentioned steps e, high strength curing system is superfine cement, and the grain diameter of described superfine cement is less than 10 microns; The working concentration of this superfine cement is 12%, and namely this superfine cement accounts for the mass percent of the mixture that itself and water are formed is 12%.
In above-mentioned steps h, shut-in pressure and sleeve pipe open flow flow obviously decline, be then judged as accomplishing the end in view, water blockoff success rate gets a promotion.
Beneficial effect of the present invention: by shut-in pressure and sleeve pipe open flow speed, the present invention judges whether oilwell water shutoff terminates, carry out next step lower pump to produce, can effectively improve oilwell water shutoff success rate, the blindness that after avoiding plug water construction, direct lower pump is produced, the present invention effectively can improve fractured reservoir chemical water plugging of oil well success rate, can effective shutoff water outlet position, force follow-up injection water near oil well, run into fluid diversion after blocking barrier, start low-permeability layer and improve oily well yield.
Below with reference to embodiment, the present invention is described in further details.
Detailed description of the invention
The invention provides a kind of method improving low permeability fractured type oil reservoir chemical water plugging of oil well success rate, comprise the steps:
Shut-in pressure P before a, reading construction
1with sleeve pipe open flow flow Q
1;
B, injection test clear water, make water be full of tubing and casing, and examination sleeve pipe and sleeve valve, ensure that sleeve pipe is full of clear water, and pressure testing, do not sting and do not leak for qualified;
C, note chemical plugging agent slug I polymer phenolic aldehyde gel;
D, note chemical plugging agent slug II Weak gel particle;
E, note chemical plugging agent slug III high strength curing system;
F, positive and negative crowded displacement fluid;
After g, replacement, closing well is waited solidifying;
After h, time condensation bundle, read the rear shut-in pressure P of construction
2with sleeve pipe open flow flow Q
2if shut-in pressure and sleeve pipe open flow flow obviously do not reduce, then get back to step c, again note blocking agent, Hou Ning, till shut-in pressure and sleeve pipe open flow flow obviously decline, note blocking agent can terminate; The criterion that wherein shut-in pressure and sleeve pipe open flow flow obviously do not reduce is: P
2>=0.5P
1or Q
2>=0.5Q
1; The criterion that shut-in pressure and sleeve pipe open flow flow obviously decline is: P
2< 0.5P
1and Q
2< 0.5Q
1;
I, constructed after trip out measure tubing string, use drift size gauge tool drifting, drifting is to artificial bottom of a well; If be hampered, lower scraper, junk mill process pit shaft are to shaft bottom;
J, under enter flow string and pump and open and take out.
Wherein in step b, the amount of injection test clear water is 30m
3, pressure test pressure is 25MPa; The amount noting chemical plugging agent slug I polymer phenolic aldehyde gel in step c is 300m
3; The amount noting chemical plugging agent slug II Weak gel particle in steps d is 300m
3; The amount noting chemical plugging agent slug III high strength curing system in step e is 100m
3; The each 30m of amount of positive and negative crowded displacement fluid in step f
3; In step g, after replacement, closing well waits the solidifying time is 24 hours.
Anionic water solution polyacrylamide solution, the methenamine aqueous solution of 0.2% and the resorcinol aqueous solution of 0.02% that wherein in step c, polymer phenolic aldehyde gel is 0.3% by mass ratio form.
Wherein in step e, high strength curing system is superfine cement, and the grain diameter of described superfine cement is less than 10 microns; The working concentration of this superfine cement is 12%, and namely this superfine cement accounts for the mass percent of the mixture that itself and water are formed is 12%.
Wherein in step h, shut-in pressure and sleeve pipe open flow flow obviously decline, be then judged as accomplishing the end in view, water blockoff success rate gets a promotion.
In order to make the object of the invention, technical scheme key clearly, to by example, this programme embodiment is described in further detail below.
Certain low-permeability fissured oil reservoir oil well embodiment:
Shut-in pressure P is read before a, note blocking agent
1for 8MPa, sleeve pipe open flow flow Q
1for 0.5m
3∕ h;
B, injection test clear water 30m
3, and pressure testing 25MPa, do not sting and do not leak;
C, injection slug I: polymer phenolic aldehyde gel 300m
3(0.3% anion hydrolyzed polyacrylamide+0.2% methenamine+0.02% resorcinol), injects discharge capacity 4m
3∕ h;
D, injection slug II: Weak gel particle 300m
3(working concentration is 0.5%, is purchased from Xi'an Changqing Chemical Industry Group Co., Ltd. outward), injects discharge capacity 4m
3∕ h;
E, injection slug III: high strength curing system 100m
3(superfine cement, working concentration is 12%).Inject discharge capacity 4m
3∕ h;
F, injection slug IV: positive and negative crowded displacement fluid 30m
3(0.1% polymer solution).Inject discharge capacity 4m
3∕ h;
G, each 30m of positive and negative crowded displacement fluid
3;
After h, replacement, closing well waits solidifying 24 hours;
After i, time condensation bundle, read the rear shut-in pressure P of construction
2for 5MPa and sleeve pipe open flow flow Q
2for 0.3m
3, front and back shut-in pressure and sleeve pipe open flow flow obviously do not reduce (P
2>=0.5P
1or Q
2>=0.5Q
1) then get back to step c, again note blocking agent;
J, refill slug I polymer phenolic aldehyde gel 300m in accordance with step c
3;
K, repetition steps d;
L, repetition step e;
M, repetition step f;
N, repetition step g; The each 30m of positive and negative crowded displacement fluid
3;
O, repetition step h; After replacement, closing well waits solidifying 24 hours;
After p, time condensation bundle, read the rear shut-in pressure P of construction
2for 3MPa and sleeve pipe open flow flow Q
2for 0.2m
3, front and back shut-in pressure and sleeve pipe open flow flow obviously decline (P
2< 0.5P
1and Q
2< 0.5Q
1), meet the demands, construction terminates;
Q, constructed after trip out measure tubing string, use drift size gauge tool drifting, drifting is to artificial bottom of a well; If be hampered, lower scraper, junk mill process pit shaft are to shaft bottom;
R, enter down flow string and pump on request and open and take out.
To sum up, the present invention has given full play to the advantage of water shutoff in oil well, polymer phenolic aldehyde gel and gel particle, high strength curing system are mainly successively injected oil well by it, and blocking agent preferentially enters high permeability zone, and gel particle is sealed up for safekeeping in high permeability zone by high strength curing system.When the water (injecting water, Bian Shui etc.) of the displacement of reservoir oil approaches oil well along high permeability zone, now gel particle plays the effect stopping water, forces it that changed course occurs thus improves sweep area, reaching water blockoff displacement of reservoir oil object.Its design is as follows:
First stage: note blocking agent, inject blocking agent successively according to following slug, improve operation pressure;
Slug I: adopt the microcrack of polymer phenolic aldehyde gel fracture far-end and matrix to carry out shutoff;
Slug II: adopt Weak gel particle, fill crack, shutoff is high oozes band;
Slug III: adopt high strength curing system fracture to seal, prevents that blocking agent is counter tells;
Slug IV: adopt and replace active water, prevent blocking agent plastic in oil pipe.
Second stage: closing well waits solidifying 24 hours;
Phase III: after waiting condensation bundle, judge water blockoff success or not by shut-in pressure and sleeve pipe open flow speed, if shut-in pressure and sleeve pipe open flow speed obviously do not reduce, then get back to the first stage, again blocking agent, Hou Ning is noted, till shut-in pressure and sleeve pipe open flow speed obviously decline.
By shut-in pressure and sleeve pipe open flow speed, the present invention judges whether oilwell water shutoff terminates, carry out next step lower pump to produce, can effectively improve oilwell water shutoff success rate, the blindness that after avoiding plug water construction, direct lower pump is produced, the present invention effectively can improve fractured reservoir chemical water plugging of oil well success rate, can effective shutoff water outlet position, force follow-up injection water near oil well, run into fluid diversion after blocking barrier, start low-permeability layer and improve oily well yield.
The part do not described in detail in present embodiment belongs to the known conventional means of the industry, does not describe one by one here.More than exemplifying is only illustrate of the present invention, does not form the restriction to protection scope of the present invention, everyly all belongs within protection scope of the present invention with the same or analogous design of the present invention.
Claims (5)
1. improve a method for low permeability fractured type oil reservoir chemical water plugging of oil well success rate, it is characterized in that, comprise the steps:
Shut-in pressure P before a, reading construction
1with sleeve pipe open flow flow Q
1;
B, injection test clear water, make water be full of tubing and casing, and examination sleeve pipe and sleeve valve, ensure that sleeve pipe is full of clear water, and pressure testing, do not sting and do not leak for qualified;
C, note chemical plugging agent slug I polymer phenolic aldehyde gel;
D, note chemical plugging agent slug II Weak gel particle;
E, note chemical plugging agent slug III high strength curing system;
F, positive and negative crowded displacement fluid;
After g, replacement, closing well is waited solidifying;
After h, time condensation bundle, read the rear shut-in pressure P of construction
2with sleeve pipe open flow flow Q
2if shut-in pressure and sleeve pipe open flow flow obviously do not reduce, then get back to step c, again note blocking agent, Hou Ning, till shut-in pressure and sleeve pipe open flow flow obviously decline, note blocking agent can terminate; The criterion that wherein shut-in pressure and sleeve pipe open flow flow obviously do not reduce is: P
2>=0.5P
1or Q
2>=0.5Q
1; The criterion that shut-in pressure and sleeve pipe open flow flow obviously decline is: P
2< 0.5P
1and Q
2< 0.5Q
1;
I, constructed after trip out measure tubing string, use drift size gauge tool drifting, drifting is to artificial bottom of a well; If be hampered, lower scraper, junk mill process pit shaft are to shaft bottom;
J, under enter flow string and pump and open and take out.
2. a kind of method improving low permeability fractured type oil reservoir chemical water plugging of oil well success rate according to claim 1, wherein in step b, the amount of injection test clear water is 30m
3, pressure test pressure is 25MPa; The amount noting chemical plugging agent slug I polymer phenolic aldehyde gel in step c is 300m
3; The amount noting chemical plugging agent slug II Weak gel particle in steps d is 300m
3; The amount noting chemical plugging agent slug III high strength curing system in step e is 100m
3; The each 30m of amount of positive and negative crowded displacement fluid in step f
3; In step g, after replacement, closing well waits the solidifying time is 24 hours.
3. a kind of method improving low permeability fractured type oil reservoir chemical water plugging of oil well success rate according to claim 1, it is characterized in that, anionic water solution polyacrylamide solution, the methenamine aqueous solution of 0.2% and the resorcinol aqueous solution of 0.02% that wherein in step c, polymer phenolic aldehyde gel is 0.3% by mass ratio form.
4. a kind of method improving low permeability fractured type oil reservoir chemical water plugging of oil well success rate according to claim 1, it is characterized in that, wherein in step e, high strength curing system is superfine cement, and the grain diameter of described superfine cement is less than 10 microns; The working concentration of this superfine cement is 12%, and namely this superfine cement accounts for the mass percent of the mixture that itself and water are formed is 12%.
5. a kind of method improving low permeability fractured type oil reservoir chemical water plugging of oil well success rate according to claim 1, it is characterized in that, wherein shut-in pressure and the obvious decline situation described in the appearance of sleeve pipe open flow flow in step h, be then judged as accomplishing the end in view, water blockoff success rate gets a promotion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510927913.2A CN105569605B (en) | 2015-12-15 | 2015-12-15 | Method for improving chemical water plugging success rate of low-permeability fractured reservoir oil well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510927913.2A CN105569605B (en) | 2015-12-15 | 2015-12-15 | Method for improving chemical water plugging success rate of low-permeability fractured reservoir oil well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105569605A true CN105569605A (en) | 2016-05-11 |
| CN105569605B CN105569605B (en) | 2018-02-02 |
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ID=55880161
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|---|---|---|---|
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106368646A (en) * | 2016-08-30 | 2017-02-01 | 中国石油天然气股份有限公司 | Selective water plugging process for low-porosity and low-permeability reservoir |
| CN106634910A (en) * | 2016-12-15 | 2017-05-10 | 陕西庆华石油建设有限公司 | Profile control agent and preparation method thereof |
| CN110173248A (en) * | 2019-06-12 | 2019-08-27 | 西安方正石油科技有限责任公司 | A kind of water blockoff turnaround fracture technique suitable for the old oil of water breakthrough, gas well |
| CN113153215A (en) * | 2021-04-23 | 2021-07-23 | 大庆辰平钻井技术服务有限公司 | Chemical plugging method for high-water flooded layer of deflecting section of ultra-short radius horizontal well |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090260813A1 (en) * | 2007-01-09 | 2009-10-22 | Anderson Gregory E | Method for Terminating or Reducing Water Flow in a Subterranean Formation |
| US20110024115A1 (en) * | 2009-07-31 | 2011-02-03 | Brice Bradley W | Method to Control Driving Fluid Breakthrough During Production of Hydrocarbons from a Subterranean Reservoir |
| CN102373914A (en) * | 2010-08-25 | 2012-03-14 | 中国石油天然气股份有限公司 | Deep profile control method for fractured reservoir |
| CN103911134A (en) * | 2014-03-31 | 2014-07-09 | 北京恩瑞达科技有限公司 | Compound profile modifying/water plugging agent |
| CN105086967A (en) * | 2015-05-22 | 2015-11-25 | 中国石油天然气股份有限公司 | Channeling-preventing and blocking agent and construction method for blocking and blocking channeling by using same |
-
2015
- 2015-12-15 CN CN201510927913.2A patent/CN105569605B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090260813A1 (en) * | 2007-01-09 | 2009-10-22 | Anderson Gregory E | Method for Terminating or Reducing Water Flow in a Subterranean Formation |
| US20110024115A1 (en) * | 2009-07-31 | 2011-02-03 | Brice Bradley W | Method to Control Driving Fluid Breakthrough During Production of Hydrocarbons from a Subterranean Reservoir |
| CN102373914A (en) * | 2010-08-25 | 2012-03-14 | 中国石油天然气股份有限公司 | Deep profile control method for fractured reservoir |
| CN103911134A (en) * | 2014-03-31 | 2014-07-09 | 北京恩瑞达科技有限公司 | Compound profile modifying/water plugging agent |
| CN105086967A (en) * | 2015-05-22 | 2015-11-25 | 中国石油天然气股份有限公司 | Channeling-preventing and blocking agent and construction method for blocking and blocking channeling by using same |
Non-Patent Citations (1)
| Title |
|---|
| 赖南君等: "低渗透裂缝型油藏复合堵水剂研制与应用", 《油田化学》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106368646A (en) * | 2016-08-30 | 2017-02-01 | 中国石油天然气股份有限公司 | Selective water plugging process for low-porosity and low-permeability reservoir |
| CN106368646B (en) * | 2016-08-30 | 2019-02-15 | 中国石油天然气股份有限公司 | Selective water plugging process for low-porosity and low-permeability reservoir |
| CN106634910A (en) * | 2016-12-15 | 2017-05-10 | 陕西庆华石油建设有限公司 | Profile control agent and preparation method thereof |
| CN110173248A (en) * | 2019-06-12 | 2019-08-27 | 西安方正石油科技有限责任公司 | A kind of water blockoff turnaround fracture technique suitable for the old oil of water breakthrough, gas well |
| CN113153215A (en) * | 2021-04-23 | 2021-07-23 | 大庆辰平钻井技术服务有限公司 | Chemical plugging method for high-water flooded layer of deflecting section of ultra-short radius horizontal well |
| CN113153215B (en) * | 2021-04-23 | 2022-11-29 | 大庆辰平钻井技术服务有限公司 | Chemical plugging method for high-water-flooded layer of deflecting section of ultra-short radius horizontal well |
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