CN103806889B - Method for infinite-grade chemical layering fracturing or acidizing - Google Patents
Method for infinite-grade chemical layering fracturing or acidizing Download PDFInfo
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- CN103806889B CN103806889B CN201410076638.3A CN201410076638A CN103806889B CN 103806889 B CN103806889 B CN 103806889B CN 201410076638 A CN201410076638 A CN 201410076638A CN 103806889 B CN103806889 B CN 103806889B
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000000126 substance Substances 0.000 title claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 55
- 238000010276 construction Methods 0.000 claims abstract description 11
- 239000003999 initiator Substances 0.000 claims abstract description 8
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 5
- GQOKIYDTHHZSCJ-UHFFFAOYSA-M dimethyl-bis(prop-2-enyl)azanium;chloride Chemical compound [Cl-].C=CC[N+](C)(C)CC=C GQOKIYDTHHZSCJ-UHFFFAOYSA-M 0.000 claims abstract description 3
- 239000002253 acid Substances 0.000 claims description 18
- 239000012530 fluid Substances 0.000 claims description 13
- 238000013517 stratification Methods 0.000 claims description 8
- -1 Butyl Amidine HCl salt Chemical class 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- VYBHLZOLHCQLHT-UHFFFAOYSA-N 1-(2-methylpropyl)-4,5-dihydroimidazole hydrochloride Chemical compound Cl.C(C(C)C)N1C=NCC1 VYBHLZOLHCQLHT-UHFFFAOYSA-N 0.000 claims description 3
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical compound OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 abstract description 6
- 229910001870 ammonium persulfate Inorganic materials 0.000 abstract description 3
- 239000002775 capsule Substances 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 abstract description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 abstract 1
- 229910052796 boron Inorganic materials 0.000 abstract 1
- 239000003431 cross linking reagent Substances 0.000 abstract 1
- 230000035699 permeability Effects 0.000 description 11
- 239000000243 solution Substances 0.000 description 9
- 239000003292 glue Substances 0.000 description 7
- 230000009466 transformation Effects 0.000 description 5
- 230000000977 initiatory effect Effects 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 description 2
- 239000004971 Cross linker Substances 0.000 description 2
- UWNADWZGEHDQAB-UHFFFAOYSA-N i-Pr2C2H4i-Pr2 Natural products CC(C)CCC(C)C UWNADWZGEHDQAB-UHFFFAOYSA-N 0.000 description 2
- 238000005488 sandblasting Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical group NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 229940068984 polyvinyl alcohol Drugs 0.000 description 1
- 235000019422 polyvinyl alcohol Nutrition 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- PYNUOAIJIQGACY-UHFFFAOYSA-N propylazanium;chloride Chemical compound Cl.CCCN PYNUOAIJIQGACY-UHFFFAOYSA-N 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Pipeline Systems (AREA)
Abstract
The invention discloses an infinite-grade chemical layered fracturing or acidizing method, which comprises the following steps: 1) injecting a measure liquid into the reservoir according to a construction pumping program; 2) injecting a proper amount of viscosity-changing temporary plugging liquid into the reservoir; the viscosity-changing temporary plugging liquid is prepared by mixing the following substances in parts by mass: 1-5% of water-soluble polyvinyl alcohol, 1-3% of dimethyldiallylammonium chloride, 0.005-0.02% of N' N-methylene-bisacrylamide, 0.005-0.2% of azo initiator, 0.1-0.5% of organic boron crosslinking agent, 0.5-5% of ammonium persulfate capsule and the balance of water; 3) after the temporary plugging liquid becomes viscous and thickened, injecting a second measure liquid; 4) and repeating the steps 1) to 3) until the measure reconstruction of the reservoir is completed. The method can realize fine layered reconstruction without any well entering tool, effectively shorten the construction period and reduce the construction risk.
Description
Technical field
The present invention relates to natural petroleum gas field technical field, particularly relate to a kind of infinite stages chemical stratification pressure
The method split or be acidified.
Background technology
At present oil gas water well separate stratum fracfturing typically uses mechanical-physical partition method, rely on more packer, bridging plug,
Cementing plug, sand plug, water-jet and sandblasting pressure break etc. formed reservoir layering packing, this method have with
Lower shortcoming: 1) use packer, bridging plug to separate reservoir, work progress need to according to the quantity of transformation interval once
Or enter down packer, bridging plug, extend construction period, there is also simultaneously and lose problems such as sealing, do over again,
Owing to entering that well tool quantity is more, it is relatively large in diameter and also increases sand pipe laying post or tubing string meets the risk of card；2) machine
Interval is more or thickness in monolayer is less or compartment thickness is less stratum to transforming in reservoir for tool physical layering, by
Limit in instrument and cause the finiteness of transformation interval, be difficulty with finely being layered；3) " high speed hydraulic jet
Sandblasting pressure break " although can realize to a certain extent without instrument be layered, but construction very complicated, also with
The risk of nozzle useless.
Summary of the invention
In order to solve above-mentioned technical problem, the invention provides a kind of infinite stages chemical stratification pressure break or acidifying
Method, the method is without by any instrument, without the risk of jam tubing string, and can realize to a greater extent
Fine layering, shortens construction period, reduces construction risk.
To this end, technical scheme is as follows:
A kind of infinite stages chemical stratification pressure break or the method for acidifying, comprise the steps of:
1) in reservoir, measure liquid is injected according to construction infusion program；
2) in reservoir, the most stifled liquid that becomes sticky is injected；
The described the most stifled liquid that becomes sticky is mixed by following material in parts by weight:
3) after the most stifled liquid retrogradation that becomes sticky, the second measure liquid is injected；
4) step 1 is repeated)～3), until completing the measures to reform of reservoir.
Described azo-initiator be azo diisobutyl amidine hydrochlorate, azo two isobutyl imidazoline hydrochloride and
Any one or the most several mixture with any ratio in azo dicyano valeric acid.
The effect of described dimethyl diallyl ammonium chloride be under the effect of azo-initiator with water-soluble poly
Vinyl alcohol and the reaction of N ' N-methylene-bisacrylamide, form new space net structure, makes the most stifled liquid that becomes sticky
Viscosity increases, it is achieved the temporary transient closure of reservoir.
Described measure liquid is fracturing fluid or acid solution；Described in when described measure liquid is fracturing fluid, the second measure liquid is
Replace fracturing fluid；When described measure liquid is acid solution, the second measure liquid is for replacing acid solution.
Described azo-initiator be azo diisobutyl amidine hydrochlorate, azo two isobutyl imidazoline hydrochloride and
Any one or the most several mixture with any ratio in azo dicyano valeric acid.The effect of initiator is
Acrylamide is promoted to carry out polyreaction.
Described organic borate cross-linker has delay crosslinking function, it is possible to react with water-soluble poval,
Increase the viscosity of the most stifled liquid that becomes sticky.
The most broken glue of the described Ammonium persulfate. capsule the most stifled liquid that becomes sticky after realizing thickening returns row.
The described temporary preparation method blocking up liquid that becomes sticky is: at normal temperatures by water-soluble poval, dimethyl diene
Propyl ammonium chloride, N ' N-methylene-bisacrylamide and azo-initiator are added to the water and stir, then
Before said mixture add pit shaft, there was added machine borate crosslinker and Ammonium persulfate. capsule wherein, stir,
Become sticky described in obtaining the most stifled liquid.
The method without by any enter well tool can realize being layered measures to reform, it is to avoid tubing string card choke
Danger, ensures repeatedly and controllably fine separate zone stimulation greatly, meet multistage reservoir separate stratum fracfturing or
The requirement of acidifying uniformly transformation, shortens construction period, reduces construction risk, improve reservoir Overall Reconstruction effect.
Accompanying drawing explanation
Fig. 1 is the first order measures to reform work progress utilizing the inventive method to carry out certain well in multistage transformation
Schematic diagram；
Fig. 2 is that the inventive method carries out the first order measures to reform later stage in multistage transformation in reservoir to this well
Injection becomes sticky and blocks up liquid schematic diagram temporarily；
Fig. 3 is that this well is carried out after the first order transformed by the inventive method, and by becoming sticky, the most stifled liquid is carried out temporarily
Stifled, then implement the work progress schematic diagram of second level measures to reform；
Detailed description of the invention
Embodiment 1
Infinite stages chemical stratification pressure break
1) in the reservoir I that permeability is the highest, preposition fracturing fluid is injected, according to reservoir permeability difference, front
Put fracturing fluid to press off permeability reservoir I the highest, the easiest crack initiation carry out making seam by automatically selecting；
2), complete to take the injection of sand fracturing fluid according to design quantity after, in reservoir I, inject the most stifled liquid that becomes sticky (become
The most stifled viscous liquid measure need to carry out calculating to ensure effective closure in crack according to crack dynamic volume)；
3) continuing to inject in reservoir to replace fracturing fluid, the most stifled liquid that will become sticky is pushed in reservoir I, becomes sticky the most stifled
After liquid enters destination layer, viscosity becomes big, blocks reservoir I.(replace pressure break liquid measure need to according to pit shaft and
Operating tool string situation calculates, it is ensured that become sticky temporarily stifled liquid just completely in the crack of reservoir I and will not
Residual causes pit shaft to block in the wellbore)；
4) repeat step 1)～3), fracturing fluid by automatically select press off the permeability outside reservoir I the highest,
The reservoir II of the easiest crack initiation, the rest may be inferred complete the measures to reform of all reservoirs after, becoming sticky after solidification is the most stifled
Liquid reaches brokenly the glue time, it is achieved broken glue returns row.
Embodiment 2
Infinite stages chemical stratification is acidified
1) in the reservoir I that permeability is the highest, inject preposition acid solution reservoir is acidified, permeate according to reservoir
Sex differernce, preposition acid solution will preferentially enter the highest reservoir of permeability I；
2), complete the injection of main body acid solution according to design quantity after, in reservoir I, inject the most stifled liquid that becomes sticky (become
The most stifled viscous liquid measure need to carry out calculating to ensure effective closure in crack according to acidizing radius and rock acid etching volume)；
3) continuing to inject in reservoir to replace acid solution, the most stifled liquid that will become sticky is pushed in reservoir I, and become sticky the most stifled liquid
After entering destination layer, viscosity becomes big, blocks reservoir I.(replacing pressure break liquid measure need to be according to pit shaft and execute
Work tubing string situation calculates, it is ensured that become sticky temporarily stifled liquid just completely in reservoir I and well will not be remained in
Pit shaft is caused to block in Tong)；
4) step 1 is repeated)～3), acid solution enters, by automatically selecting, the reservoir that the permeability outside reservoir I is the highest
II, the rest may be inferred complete the measures to reform of all reservoirs after, the becoming sticky the most stifled liquid after solidification reaches brokenly the glue time,
Realize broken glue and return row.
Embodiment 3
Infinite stages chemical stratification acid fracturing
1) in the reservoir I that permeability is the highest, preposition acid fracturing liquid is injected, according to reservoir permeability difference, preposition
Acid fracturing liquid presses off permeability reservoir I the highest, the easiest crack initiation carry out being acidified and making seam by automatically selecting；
2), complete the injection of load fluid according to design quantity after, in reservoir I, inject the most stifled liquid that becomes sticky (become sticky
The most stifled liquid measure need to carry out calculating to ensure effective closure in crack according to crack dynamic volume)；
3) continuing to inject in reservoir to replace acid fracturing acid solution, the most stifled liquid that will become sticky is pushed in reservoir I, becomes sticky temporarily
After stifled liquid enters destination layer, viscosity becomes big, blocks reservoir I.(replacing pressure break liquid measure need to be according to pit shaft
And operating tool string situation calculates, it is ensured that become sticky temporarily stifled liquid just completely in reservoir I crack and will not
Residual causes pit shaft to block in the wellbore)；
4) repeat step 1)～3), acid fracturing fluid by automatically select press off the permeability outside reservoir I the highest,
The reservoir II of the easiest crack initiation, the rest may be inferred complete the measures to reform of all reservoirs after, becoming sticky after solidification is the most stifled
Liquid reaches brokenly the glue time, it is achieved broken glue returns row.
Claims (3)
1. an infinite stages chemical stratification pressure break or the method for acidifying, it is characterised in that comprise the steps of:
1) in reservoir, measure liquid is injected according to construction infusion program；
2) in reservoir, the most stifled liquid that becomes sticky is injected；
The described the most stifled liquid that becomes sticky is mixed by following material in parts by weight:
Described dimethyl diallyl ammonium chloride under the effect of azo-initiator with water-soluble poval and
N ' N-methylene-bisacrylamide reacts, and forms space net structure；
3) after the most stifled liquid retrogradation that becomes sticky, the second measure liquid is injected；
4) step 1 is repeated)～3), until completing the measures to reform of reservoir.
2. the method for claim 1, it is characterised in that: described azo-initiator is that azo two is different
In Butyl Amidine HCl salt, azo two isobutyl imidazoline hydrochloride and azo dicyano valeric acid any one or appoint
Anticipate several mixture with any ratio.
3. the method for claim 1, it is characterised in that: described measure liquid is fracturing fluid or acid solution；
Second measure liquid described in when described measure liquid is fracturing fluid is for replacing fracturing fluid；When described measure liquid is acid solution
Time, the second measure liquid is for replacing acid solution.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410076638.3A CN103806889B (en) | 2014-03-04 | 2014-03-04 | Method for infinite-grade chemical layering fracturing or acidizing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410076638.3A CN103806889B (en) | 2014-03-04 | 2014-03-04 | Method for infinite-grade chemical layering fracturing or acidizing |
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| CN103806889A CN103806889A (en) | 2014-05-21 |
| CN103806889B true CN103806889B (en) | 2016-08-17 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107286916A (en) * | 2016-04-12 | 2017-10-24 | 中国石油化工集团公司 | A kind of oil-gas field fracturing liquid containing PVA, PVA fiber, oil gas field well cementation agent and oil-gas field fracturing diverting agent |
| CN110630238A (en) * | 2019-11-14 | 2019-12-31 | 西安石油大学 | Fracturing-oil displacement integrated yield increasing method for oil field |
| CN113620995B (en) * | 2020-05-06 | 2023-05-26 | 中国石油天然气股份有限公司 | Temporary plugging material for fracturing acidification and preparation method thereof |
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| US7712535B2 (en) * | 2006-10-31 | 2010-05-11 | Clearwater International, Llc | Oxidative systems for breaking polymer viscosified fluids |
| CN102304200A (en) * | 2011-05-27 | 2012-01-04 | 中国海洋石油总公司 | Crosslinked polymer microspheres and preparation method thereof |
| CN103265939A (en) * | 2013-05-23 | 2013-08-28 | 中国石油天然气股份有限公司 | Fracturing fluid thickening agent and preparation and application thereof |
| CN103361039A (en) * | 2013-08-02 | 2013-10-23 | 中国石油集团川庆钻探工程有限公司 | Plugging method for generating fluid gel of plugging valve plugging gas layer by using formation temperature |
| CN103387680A (en) * | 2013-08-02 | 2013-11-13 | 中国石油集团川庆钻探工程有限公司 | Preparation method of fluid gel for generating packer valve plugging air layer by using formation temperature |
| CN103409130A (en) * | 2013-09-02 | 2013-11-27 | 重庆科技学院 | Multi-component acid pressure temporary plugging additive and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7380600B2 (en) * | 2004-09-01 | 2008-06-03 | Schlumberger Technology Corporation | Degradable material assisted diversion or isolation |
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2014
- 2014-03-04 CN CN201410076638.3A patent/CN103806889B/en active Active
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|---|---|---|---|---|
| US7712535B2 (en) * | 2006-10-31 | 2010-05-11 | Clearwater International, Llc | Oxidative systems for breaking polymer viscosified fluids |
| CN102304200A (en) * | 2011-05-27 | 2012-01-04 | 中国海洋石油总公司 | Crosslinked polymer microspheres and preparation method thereof |
| CN103265939A (en) * | 2013-05-23 | 2013-08-28 | 中国石油天然气股份有限公司 | Fracturing fluid thickening agent and preparation and application thereof |
| CN103361039A (en) * | 2013-08-02 | 2013-10-23 | 中国石油集团川庆钻探工程有限公司 | Plugging method for generating fluid gel of plugging valve plugging gas layer by using formation temperature |
| CN103387680A (en) * | 2013-08-02 | 2013-11-13 | 中国石油集团川庆钻探工程有限公司 | Preparation method of fluid gel for generating packer valve plugging air layer by using formation temperature |
| CN103409130A (en) * | 2013-09-02 | 2013-11-27 | 重庆科技学院 | Multi-component acid pressure temporary plugging additive and preparation method thereof |
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Effective date of registration: 20210805 Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Bohai Drilling Engineering Co.,Ltd. Address before: 300457 Tianjin Binhai New Area Development Zone Huanghai Road 106, Bohai Drilling Engineering Co., Ltd. science and Technology Development Office Patentee before: CNPC Bohai Drilling Engineering Co.,Ltd. |