CN101993684A - Temporary acidizing plugging agent for low-permeability oilfield water injection well - Google Patents
Temporary acidizing plugging agent for low-permeability oilfield water injection well Download PDFInfo
- Publication number
- CN101993684A CN101993684A CN 200910090931 CN200910090931A CN101993684A CN 101993684 A CN101993684 A CN 101993684A CN 200910090931 CN200910090931 CN 200910090931 CN 200910090931 A CN200910090931 A CN 200910090931A CN 101993684 A CN101993684 A CN 101993684A
- Authority
- CN
- China
- Prior art keywords
- plugging agent
- temporary plugging
- water injection
- low
- well
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 42
- 238000002347 injection Methods 0.000 title claims abstract description 34
- 239000007924 injection Substances 0.000 title claims abstract description 34
- 239000002332 oil field water Substances 0.000 title 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000012530 fluid Substances 0.000 claims abstract description 7
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 7
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims abstract description 3
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 claims abstract description 3
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000000243 solution Substances 0.000 claims description 12
- 239000002253 acid Substances 0.000 abstract description 7
- 239000000654 additive Substances 0.000 abstract description 5
- 239000012065 filter cake Substances 0.000 abstract description 5
- 239000002245 particle Substances 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 2
- 230000035699 permeability Effects 0.000 abstract description 2
- 230000020477 pH reduction Effects 0.000 abstract 2
- 239000007864 aqueous solution Substances 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 description 5
- 239000011229 interlayer Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000004215 Carbon black (E152) Substances 0.000 description 4
- 230000000996 additive effect Effects 0.000 description 4
- 229930195733 hydrocarbon Natural products 0.000 description 4
- 125000001183 hydrocarbyl group Chemical group 0.000 description 4
- 229920000178 Acrylic resin Polymers 0.000 description 3
- 239000004925 Acrylic resin Substances 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 239000002981 blocking agent Substances 0.000 description 2
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 241001449342 Chlorocrambe hastata Species 0.000 description 1
- 230000003190 augmentative effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910021538 borax Inorganic materials 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 1
- 235000013539 calcium stearate Nutrition 0.000 description 1
- 239000008116 calcium stearate Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- UQGFMSUEHSUPRD-UHFFFAOYSA-N disodium;3,7-dioxido-2,4,6,8,9-pentaoxa-1,3,5,7-tetraborabicyclo[3.3.1]nonane Chemical compound [Na+].[Na+].O1B([O-])OB2OB([O-])OB1O2 UQGFMSUEHSUPRD-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000019359 magnesium stearate Nutrition 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- RYYKJJJTJZKILX-UHFFFAOYSA-M sodium octadecanoate Chemical compound [Na+].CCCCCCCCCCCCCCCCCC([O-])=O RYYKJJJTJZKILX-UHFFFAOYSA-M 0.000 description 1
- 239000004328 sodium tetraborate Substances 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- BIKXLKXABVUSMH-UHFFFAOYSA-N trizinc;diborate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]B([O-])[O-].[O-]B([O-])[O-] BIKXLKXABVUSMH-UHFFFAOYSA-N 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
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- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The invention relates to a temporary plugging agent applied to acidification of a water injection well of a low-permeability oil field, which comprises stearate, borate and acrylate in a mass ratio of 3: 1: 6, wherein a polyacrylamide aqueous solution with the mass concentration of 0.2% is used as a carrier fluid of the temporary plugging agent, and the mass concentration of the temporary plugging agent is 10%; the construction pressure is 1-2MPa higher than the water injection pressure, and low-pressure slow injection is adopted; the injection speed is kept at 10-15m3H; the temporary plugging agent generates a filter cake with smaller permeability near the well wall, can effectively prevent particles of the temporary plugging agent from invading the deep part of an oil-gas reservoir, has better compatibility with water, acid liquor, additives and the like under the stratum condition, and can be quickly and completely cleaned after the acidification plays a role in diversion and steering so as to recover the condition that the well is not temporarily plugged.
Description
Technical field:
The present invention relates to a kind of temporary plugging agent that is applied to the water injection in low-permeability oilfield well acidizing.
Background technology:
Existing conventional acidifying profile control technique is to adopt the pkr instrument that interlayer or the bigger water injection well of perforation interval spacing are carried out the selective acidizing profile control, makes major part exist the water injection well of section water filling unbalanced phenomena effectively to be improved.But also exist two to limit to greatly simultaneously, because the stratum nonuniformity causes acid solution " fingering " in high permeability formation macropore and crack more easily, can't make hypotonic interval and little duct obtain effective acidifying in the conventional acidization of one side; Can't adopt instrument packing acidifying profile control for the less well of distance between interlayer or perforation interval on the other hand.
Summary of the invention:
The objective of the invention is at the water filling of water injection in low-permeability oilfield well profile unbalanced, particularly thorny, for two above perforation intervals are arranged with one deck position, distance is less between the perforation interval, or the water filling interfloor distance is less, can't adopt the situation of pkr acidifying profile control, a kind of water injection well acidifying profile control temporary plugging agent is provided, realizes the balanced water filling of water injection well section.
Water injection in low-permeability oilfield well acidizing temporary plugging agent of the present invention is by weight by stearate: borate: acrylate=constitute at 3: 1: 6.
This water injection well acidifying temporary plugging agent has good physicals, can generate the filter cake of less rate of permeation near the borehole wall, can effectively prevent temporary plugging agent particle intrusion hydrocarbon-bearing pool deep.This temporary plugging agent and water, acid solution and additive thereof etc. have compatibleness preferably under formation condition simultaneously, and after the shunting steering-effecting was played in acidifying, temporary plugging agent can be washed fast and fully, recover well and are in the temporarily stifled situation of nothing.
The water injection in low-permeability oilfield well is determining of stifled acidizing treatment parameter temporarily:
1) transport fluid is determined: according to experimental result, determining to adopt mass concentration is that 0.2% polyacrylamide solution is as the temporary plugging agent transport fluid.
2) the temporary plugging agent consumption is determined: according to the processing well section and the treatment radius requirement of construction well, plug agent amount is pressed following calculation formula:
Q-blocking agent design flow wherein; H-handles zone thickness;
-stratum net porosity; R-blocking agent blocking radius, the temporary plugging agent mass concentration is 10% during use.
3) operation pressure and flow are determined: operation pressure adopts low pressure method injection at a slow speed than the high 1-2MPa of water injection pressure; Injection speed remains on 10-15m
3/ h.
4) injecting program: first slug: spearhead clear water; Second slug: the polyacrylamide solution of mass concentration 0.2% and mass concentration are 10% temporary plugging agent; The 3rd slug: spacer pad clear water; The 4th slug: acid solution.
2007-2008 has implemented 5 mouthfuls of well test in places in oil field, Jingan County, water injection well section water sucting thickness has on average increased 3.4m, the average individual well water injection rate 2m that increases day by day
3, accumulative total augmented injection amount has reached 2678m
3, 5 corresponding 32 mouthfuls of oil wells of well group increase oily 7.36t, and accumulative total increases oil and has reached 1876.2t, has obtained test in place effect preferably.
Embodiment
Embodiment 1
Water injection in low-permeability oilfield well acidizing temporary plugging agent is by weight by sodium stearate: sodium tetraborate: acrylic resin I number=3: 1: 6 proportionings; Adopt mass concentration be 0.2% polyacrylamide solution as the temporary plugging agent transport fluid, the temporary plugging agent mass concentration is 10%, operation pressure is than the high 1MPa of water injection pressure, in the layer or the well of the general profile control and water plugging of interlayer, adopt low pressure at a slow speed method inject; Injection speed remains on 10m
3/ h.Near the borehole wall, generate the filter cake of less rate of permeation, can effectively prevent temporary plugging agent particle intrusion hydrocarbon-bearing pool deep.This temporary plugging agent and water, acid solution and additive thereof etc. have compatibleness preferably under formation condition simultaneously, and after the shunting steering-effecting was played in acidifying, temporary plugging agent can be washed fast and fully, recover well and are in the temporarily stifled situation of nothing.
Embodiment 2
Water injection in low-permeability oilfield well acidizing temporary plugging agent is by weight by calcium stearate: zinc borate: acrylic resin II number=3: 1: 6 proportionings; Adopt mass concentration be 0.2% polyacrylamide solution as the temporary plugging agent transport fluid, the temporary plugging agent mass concentration is 10%, operation pressure is than the high 2MPa of water injection pressure, in the layer or the well of the general profile control and water plugging of interlayer, adopt low pressure at a slow speed method inject; Injection speed remains on 12m
3/ h.Near the borehole wall, generate the filter cake of less rate of permeation, can effectively prevent temporary plugging agent particle intrusion hydrocarbon-bearing pool deep.This temporary plugging agent and water, acid solution and additive thereof etc. have compatibleness preferably under formation condition simultaneously, and after the shunting steering-effecting was played in acidifying, temporary plugging agent can be washed fast and fully, recover well and are in the temporarily stifled situation of nothing.
Embodiment 3
Water injection in low-permeability oilfield well acidizing temporary plugging agent is by weight by Magnesium Stearate: boric acid: acrylic resin III number=3: 1: 6 proportionings; Adopt mass concentration be 0.2% polyacrylamide solution as the temporary plugging agent transport fluid, the temporary plugging agent mass concentration is 10%, operation pressure is than the high 1.5MPa of water injection pressure, in the layer or the well of the general profile control and water plugging of interlayer, adopt low pressure at a slow speed method inject; Injection speed remains on 15m
3/ h.Near the borehole wall, generate the filter cake of less rate of permeation, can effectively prevent temporary plugging agent particle intrusion hydrocarbon-bearing pool deep.This temporary plugging agent and water, acid solution and additive thereof etc. have compatibleness preferably under formation condition, after the shunting steering-effecting was played in acidifying, temporary plugging agent can be washed fast and fully, recover well and are in the temporarily stifled situation of nothing.
Claims (2)
1. water injection in low-permeability oilfield well acidizing temporary plugging agent is characterized in that: is stearate by quality than the prescription of temporary plugging agent: borate: acrylate=3: 1: 6.
2. the application of a water injection in low-permeability oilfield well acidizing temporary plugging agent according to claim 1 is characterized in that: adopt mass concentration be 0.2% polyacrylamide solution as the temporary plugging agent transport fluid, the temporary plugging agent mass concentration is 10%; Operation pressure adopts low pressure to inject at a slow speed than the high 1-2MPa of water injection pressure, and injection speed is at 10-15m
3/ h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910090931 CN101993684B (en) | 2009-08-14 | 2009-08-14 | Temporary acidizing plugging agent for low-permeability oilfield water injection well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910090931 CN101993684B (en) | 2009-08-14 | 2009-08-14 | Temporary acidizing plugging agent for low-permeability oilfield water injection well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101993684A true CN101993684A (en) | 2011-03-30 |
| CN101993684B CN101993684B (en) | 2013-07-03 |
Family
ID=43784453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910090931 Active CN101993684B (en) | 2009-08-14 | 2009-08-14 | Temporary acidizing plugging agent for low-permeability oilfield water injection well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101993684B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103642476A (en) * | 2013-12-17 | 2014-03-19 | 长江大学 | Shale gas exploitation oil-based drilling fluid well-cementing prepad fluid |
| CN104213885A (en) * | 2013-06-05 | 2014-12-17 | 中国石油天然气股份有限公司 | Acidification profile control integrated method |
| CN105178929A (en) * | 2015-09-29 | 2015-12-23 | 中国石油天然气股份有限公司 | Shielding acidification process method for heterogeneous reservoir |
| CN105298436A (en) * | 2014-06-05 | 2016-02-03 | 天津立坤石油技术服务有限公司 | Modified oilfield acid regulation integrated technique |
| CN106014332A (en) * | 2016-06-16 | 2016-10-12 | 陕西友邦石油工程技术有限公司 | Low-permeability oil field coupling profile controlling and flooding method |
| CN109021944A (en) * | 2018-09-03 | 2018-12-18 | 中国石油集团渤海钻探工程有限公司 | Oil layer protective agent |
| CN110344809A (en) * | 2019-07-05 | 2019-10-18 | 中国石油天然气股份有限公司 | Horizontal well intersegment multi-slit temporary plugging acidification method |
| CN112442344A (en) * | 2020-10-23 | 2021-03-05 | 中国石油天然气股份有限公司 | Acid-sensitive self-generation temporary plugging diverting agent for low-permeability oil reservoir and preparation method and application thereof |
| CN115717514A (en) * | 2022-11-17 | 2023-02-28 | 中国石油天然气集团有限公司 | Method for improving water absorption profile of multistage near wellbore zone |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1266248C (en) * | 2005-03-08 | 2006-07-26 | 长庆石油勘探局工程技术研究院 | Oil soluble temporary blocking drilling fluid for protecting low-permeability sandstone reservoir |
-
2009
- 2009-08-14 CN CN 200910090931 patent/CN101993684B/en active Active
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104213885A (en) * | 2013-06-05 | 2014-12-17 | 中国石油天然气股份有限公司 | Acidification profile control integrated method |
| CN103642476B (en) * | 2013-12-17 | 2017-02-15 | 长江大学 | Shale gas exploitation oil-based drilling fluid well-cementing prepad fluid |
| CN103642476A (en) * | 2013-12-17 | 2014-03-19 | 长江大学 | Shale gas exploitation oil-based drilling fluid well-cementing prepad fluid |
| CN105298436A (en) * | 2014-06-05 | 2016-02-03 | 天津立坤石油技术服务有限公司 | Modified oilfield acid regulation integrated technique |
| CN105178929A (en) * | 2015-09-29 | 2015-12-23 | 中国石油天然气股份有限公司 | Shielding acidification process method for heterogeneous reservoir |
| CN106014332B (en) * | 2016-06-16 | 2018-07-31 | 陕西友邦石油工程技术有限公司 | A kind of low-permeability oilfield coupling transfer drive method |
| CN106014332A (en) * | 2016-06-16 | 2016-10-12 | 陕西友邦石油工程技术有限公司 | Low-permeability oil field coupling profile controlling and flooding method |
| CN109021944A (en) * | 2018-09-03 | 2018-12-18 | 中国石油集团渤海钻探工程有限公司 | Oil layer protective agent |
| CN109021944B (en) * | 2018-09-03 | 2020-09-29 | 中国石油集团渤海钻探工程有限公司 | Oil layer protective agent |
| CN110344809A (en) * | 2019-07-05 | 2019-10-18 | 中国石油天然气股份有限公司 | Horizontal well intersegment multi-slit temporary plugging acidification method |
| CN110344809B (en) * | 2019-07-05 | 2021-06-01 | 中国石油天然气股份有限公司 | Horizontal well intersegment multi-slit temporary plugging acidification method |
| CN112442344A (en) * | 2020-10-23 | 2021-03-05 | 中国石油天然气股份有限公司 | Acid-sensitive self-generation temporary plugging diverting agent for low-permeability oil reservoir and preparation method and application thereof |
| CN112442344B (en) * | 2020-10-23 | 2022-07-05 | 中国石油天然气股份有限公司 | Acid-sensitive self-generation temporary plugging diverting agent for low-permeability oil reservoir and preparation method and application thereof |
| CN115717514A (en) * | 2022-11-17 | 2023-02-28 | 中国石油天然气集团有限公司 | Method for improving water absorption profile of multistage near wellbore zone |
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| Publication number | Publication date |
|---|---|
| CN101993684B (en) | 2013-07-03 |
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