CN103923633A - Gelled-acid acid liquor applicable to high-temperature carbonatite acidification - Google Patents
Gelled-acid acid liquor applicable to high-temperature carbonatite acidification Download PDFInfo
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- CN103923633A CN103923633A CN201410171750.5A CN201410171750A CN103923633A CN 103923633 A CN103923633 A CN 103923633A CN 201410171750 A CN201410171750 A CN 201410171750A CN 103923633 A CN103923633 A CN 103923633A
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- acid
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- gelled
- acidification
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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
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/62—Compositions for forming crevices or fractures
- C09K8/72—Eroding chemicals, e.g. acids
- C09K8/74—Eroding chemicals, e.g. acids combined with additives added for specific purposes
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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
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/602—Compositions for stimulating production by acting on the underground formation containing surfactants
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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
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/84—Compositions based on water or polar solvents
- C09K8/86—Compositions based on water or polar solvents containing organic compounds
- C09K8/88—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/882—Compositions based on water or polar solvents containing organic compounds macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
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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
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/32—Anticorrosion additives
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
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Abstract
The invention discloses gelled-acid acid liquor applicable to high-temperature carbonatite acidification. The gelled-acid acid liquor comprises 0.6%-0.8% by mass volume of gelling agent, 2%-4% by volume of corrosion inhibitor, 1%-2% by volume of discharge aiding agent, 1%-2% by volume of iron ion stabilizer, 15%-22% by volume of hydrochloric acid and the balance of water. The gelled-acid acid liquor disclosed by the invention can be applied to high-temperature carbonatite acidification construction, is high temperature-resistant and salt-resistant, has good retardance, de-filtration, perforating and resistance reducing performances, and can effectively relieve secondary damage to achieve a deep acidification process. The gelled-acid acid liquor system is stable in performance, simple to prepare, convenient to construct and capable of being effectively applied to high-temperature carbonatite acidification modification construction.
Description
Technical field
The present invention relates to a kind of gel acid, especially a kind of flow conductivity that can effectively improve acid-etched fracture and sour penetration range be applicable to the gel acid acid solution that the acidifying of high temperature carbonate rock is used.
Background technology
At high temperature viscosity is very little for oil field gel acid used at present, and not resistance to shearing also has larger gap at the aspect of performance that reduces hydrochlorate speed of response.Along with deepening continuously of oil-field development technology, the quantity of deep-well, ultra deep well increases gradually, also more and more higher to the performance requriements of gel acid, need reach after the resistance to shearing of high temperature resistance, reaction the effect that residue while not producing noxious residue or the row of returning is little, have good stability.As the acidifying working fluid system of ACID FRACTURING TECHNOLOGY important component part, the quality of its performance will directly determine the quality of acid fracturing construction effect.
Abroad BJ company has developed serial gel acid.Domestic Oil Exploration in China exploitation research institute, Natural Gas Inst., Sichuan Petroleum Administration, underground work Chu Deng unit have also carried out gel acid formulating and rig-site utilization.Wherein Sweet natural gas research institute has worked out the oil well gel acid formula and gas well gel acid formula and a series of supporting technology that are applicable to middle and high hot-well fracture acidizing, and successfully adopted the injection technologies such as preposition acid+gel acid, preposition acid+gel acid+conventional acid, carbonate formation has been carried out to rock mass acidifying and fracture acidizing construction.Show through long celebrating oil field, Liaohe Oil Field, the over one hundred well of Sichuan oilfield time site operation, this gel acid acid fluid system has slowed down sour rock speed of response significantly, increase acidification radius, extend fracture length, effectively having removed water lock, breast in pit shaft blocks up and other obstructions, link up gas channel, improved acidizing effect.But the gel acid acid fluid system performance making is stable not, and cost is high, cause the on-the-spot restriction being subject to a certain extent that uses.
Summary of the invention
Technical problem to be solved by this invention is, a kind of high temperature carbonate rock gel acid acid solution that acidifying is used is provided, and can effectively improve the flow conductivity of acid-etched fracture and sour penetration range.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: be a kind ofly applicable to the gel acid acid solution that the acidifying of high temperature carbonate rock is used, jelling agent is by quality volume percent, and by volume per-cent of other compositions contains following composition:
Surplus is water.
Described jelling agent is cationic acrylamide copolymer.
Described inhibiter is the mixture of any one or two kinds of imidazolines, Schiff bases.
Described cleanup additive is the mixture of any one or two kinds of alkyl sulfonates, betaines.
Described Fe stabilizer is the mixture of any one or two kinds of complexing agent class, reductive agent class.
The invention has the beneficial effects as follows: can be applied in high temperature carbonate rock acidizing treatment, high temperature resistance, anti-salt, have good slow, fall leak-off, make seam and fall the performance of resistance, can effectively alleviate secondary injury, reach the object of deep acidizing.The stable performance of gel acid acid fluid system, preparation is simple, and easy construction, can effectively be applied to high temperature carbonate rock acidifying rebuilding construction.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail:
Of the present inventionly be applicable to the gel acid acid solution that the acidifying of high temperature carbonate rock is used, jelling agent is by quality volume percent, and by volume per-cent of other compositions contains following composition:
Surplus is water.
Described jelling agent is cationic acrylamide copolymer.
Described inhibiter is the mixture of any one or two kinds of imidazolines, Schiff bases.
Described cleanup additive is the mixture of any one or two kinds of alkyl sulfonates, betaines.
Described Fe stabilizer is the mixture of any one or two kinds of complexing agent class, reductive agent class.Example 1:
64mL mass percent concentration, (lower same) 31%HCl+0.6g jelling agent, (the engineering and technological research institute/BZ of Bohai Sea drilling project company of CNPC acidifying jelling agent)+4mL inhibiter, (the engineering and technological research institute/BZ of Bohai Sea drilling project company of CNPC acidifying inhibiter)+2mL cleanup additive, (the engineering and technological research institute/BZ of Bohai Sea drilling project company of CNPC measure cleanup additive)+2mL Fe stabilizer, (the engineering and technological research institute/BZ of Bohai Sea drilling project company of CNPC acidifying Fe stabilizer)+28mL water.
The acid-soluble time 20min of jelling agent, gel acid acid fluid system viscosity at ambient temperature 40mpas, under 150 DEG C of conditions, 170s
-1acid liquid viscosity 15mpas after down cut 60min, meets site operation requirement.Example 2
64mL31%HCl+0.65g jelling agent, (the engineering and technological research institute/BZ of Bohai Sea drilling project company of CNPC acidifying jelling agent)+4mL inhibiter, (the engineering and technological research institute/BZ of Bohai Sea drilling project company of CNPC acidifying inhibiter)+2mL cleanup additive, (the engineering and technological research institute/BZ of Bohai Sea drilling project company of CNPC measure cleanup additive)+2mL Fe stabilizer, (the engineering and technological research institute/BZ of Bohai Sea drilling project company of CNPC acidifying Fe stabilizer)+28mL water.
The acid-soluble time 22min of jelling agent, gel acid acid fluid system viscosity at ambient temperature 42mpas, under 150 DEG C of conditions, 170s
-1acid liquid viscosity 16mpas after down cut 60min, meets site operation requirement.Example 3
64mL31%HCl+0.8g jelling agent, (the engineering and technological research institute/BZ of Bohai Sea drilling project company of CNPC acidifying jelling agent)+4mL inhibiter, (the engineering and technological research institute/BZ of Bohai Sea drilling project company of CNPC acidifying inhibiter)+2mL cleanup additive, (the engineering and technological research institute/BZ of Bohai Sea drilling project company of CNPC measure cleanup additive)+2mL Fe stabilizer, (the engineering and technological research institute/BZ of Bohai Sea drilling project company of CNPC acidifying Fe stabilizer)+28mL water.
The acid-soluble time 23min of jelling agent, gel acid acid fluid system viscosity at ambient temperature 45mpas, under 150 DEG C of conditions, 170s
-1acid liquid viscosity 18mpas after down cut 60min, meets site operation requirement.
All public offerings on market of reagent that engineering and technological research institute of Bohai Sea drilling project company of above-mentioned CNPC produces.
Be Engineering Projects below:
1, NP286 well, construction well section 4811.03m～5022.97m, the gelling acid solution of use-case 1, adds acid solution 220m
3, operational discharge capacity 1.8m
3/ min, operation pressure 35.28MPa～15.17MPa, oil nozzle 10mm produces, day produce oil 3.2t, daily gas 8.1 × 10
4m
3.
2, NP23-2008 well, construction well section 4656.2m～4920.0m, the gelling acid solution of use-case 3, adds acid solution 240m
3, operational discharge capacity 4.3m
3/ min, operation pressure 55MPa～8.43MPa, oil nozzle 10mm produces, conversion daily gas 26.9 × 10
4m
3.
Gel acid acid solution of the present invention, have high temperature resistance, anti-salt, good slow, fall leak-off, make seam, resistance-reducing performance, and can alleviate secondary injury, can effectively improve the flow conductivity of acid-etched fracture and sour penetration range.
In sum, content of the present invention is not limited in the above-described embodiment, and the knowledgeable people in same area can propose easily other embodiment within technical director's thought of the present invention, but this embodiment comprises within the scope of the present invention.
Claims (5)
1. be applicable to the gel acid acid solution that the acidifying of high temperature carbonate rock is used, it is characterized in that, jelling agent is pressed quality volume percent, and by volume per-cent of other compositions contains following composition:
Surplus is water.
2. be according to claim 1ly applicable to the gel acid acid solution that the acidifying of high temperature carbonate rock is used, it is characterized in that, described jelling agent is cationic acrylamide copolymer.
3. be according to claim 1ly applicable to the gel acid acid solution that the acidifying of high temperature carbonate rock is used, it is characterized in that, described inhibiter is the mixture of any one or two kinds of imidazolines, Schiff bases.
4. be according to claim 1ly applicable to the gel acid acid solution that the acidifying of high temperature carbonate rock is used, it is characterized in that, described cleanup additive is the mixture of any one or two kinds of alkyl sulfonates, betaines.
5. be according to claim 1ly applicable to the gel acid acid solution that the acidifying of high temperature carbonate rock is used, it is characterized in that, described Fe stabilizer is the mixture of any one or two kinds of complexing agent class, reductive agent class.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410171750.5A CN103923633A (en) | 2014-04-25 | 2014-04-25 | Gelled-acid acid liquor applicable to high-temperature carbonatite acidification |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410171750.5A CN103923633A (en) | 2014-04-25 | 2014-04-25 | Gelled-acid acid liquor applicable to high-temperature carbonatite acidification |
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| CN103923633A true CN103923633A (en) | 2014-07-16 |
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| CN201410171750.5A Pending CN103923633A (en) | 2014-04-25 | 2014-04-25 | Gelled-acid acid liquor applicable to high-temperature carbonatite acidification |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107523282A (en) * | 2017-09-21 | 2017-12-29 | 北京铭鉴知源油田工程科技有限公司成都分公司 | A kind of acidifying turns to acid with high temperature resistant |
| CN107652965A (en) * | 2016-07-26 | 2018-02-02 | 中国石油天然气股份有限公司 | A kind of low frictional resistance gel acid and preparation method thereof |
| CN107892910A (en) * | 2017-11-10 | 2018-04-10 | 中国石油集团渤海钻探工程有限公司 | Inexpensive multifunctional acid liquid system |
| CN108822828A (en) * | 2018-07-21 | 2018-11-16 | 北京宝丰春石油技术有限公司 | It is a kind of to react the acid that becomes sticky |
| CN108949137A (en) * | 2018-07-21 | 2018-12-07 | 东营市宝泽能源科技有限公司 | A kind of low frictional resistance acid |
| CN116925721A (en) * | 2022-03-30 | 2023-10-24 | 中国石油天然气股份有限公司 | Clastic rock reservoir reconstruction liquid |
| CN117210216A (en) * | 2023-11-09 | 2023-12-12 | 四川大学 | Instant ultrahigh Wen Jiaoning acid resistant and preparation method thereof |
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|---|---|---|---|---|
| CN1061033A (en) * | 1990-10-30 | 1992-05-13 | 四川石油管理局天然气研究所 | The gel acid that acidifying strata is used |
| US20050061509A1 (en) * | 2003-08-26 | 2005-03-24 | Halliburton Energy Services, Inc. | Methods for prodcing fluids from acidized and consolidated portions of subterranean formations |
| CN101857658A (en) * | 2009-04-09 | 2010-10-13 | 北京佛瑞克技术发展有限公司 | Copolymer for acid fracturing retarded gel acid and preparation method thereof |
| CN101864939A (en) * | 2009-04-15 | 2010-10-20 | 中国石油天然气股份有限公司 | Acid-fracturing method for leading crack to extend downward |
| CN102022105A (en) * | 2010-10-21 | 2011-04-20 | 中国石油化工股份有限公司 | Large composite acid fracturing method of fracture cave type carbonate rock reservoir |
| CN102816562A (en) * | 2012-06-29 | 2012-12-12 | 扬州润达油田化学剂有限公司 | Preparation method of densifier for diverting acid |
-
2014
- 2014-04-25 CN CN201410171750.5A patent/CN103923633A/en active Pending
Patent Citations (6)
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| CN1061033A (en) * | 1990-10-30 | 1992-05-13 | 四川石油管理局天然气研究所 | The gel acid that acidifying strata is used |
| US20050061509A1 (en) * | 2003-08-26 | 2005-03-24 | Halliburton Energy Services, Inc. | Methods for prodcing fluids from acidized and consolidated portions of subterranean formations |
| CN101857658A (en) * | 2009-04-09 | 2010-10-13 | 北京佛瑞克技术发展有限公司 | Copolymer for acid fracturing retarded gel acid and preparation method thereof |
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| CN102816562A (en) * | 2012-06-29 | 2012-12-12 | 扬州润达油田化学剂有限公司 | Preparation method of densifier for diverting acid |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107652965A (en) * | 2016-07-26 | 2018-02-02 | 中国石油天然气股份有限公司 | A kind of low frictional resistance gel acid and preparation method thereof |
| CN107523282A (en) * | 2017-09-21 | 2017-12-29 | 北京铭鉴知源油田工程科技有限公司成都分公司 | A kind of acidifying turns to acid with high temperature resistant |
| CN107892910A (en) * | 2017-11-10 | 2018-04-10 | 中国石油集团渤海钻探工程有限公司 | Inexpensive multifunctional acid liquid system |
| CN108822828A (en) * | 2018-07-21 | 2018-11-16 | 北京宝丰春石油技术有限公司 | It is a kind of to react the acid that becomes sticky |
| CN108949137A (en) * | 2018-07-21 | 2018-12-07 | 东营市宝泽能源科技有限公司 | A kind of low frictional resistance acid |
| CN116925721A (en) * | 2022-03-30 | 2023-10-24 | 中国石油天然气股份有限公司 | Clastic rock reservoir reconstruction liquid |
| CN117210216A (en) * | 2023-11-09 | 2023-12-12 | 四川大学 | Instant ultrahigh Wen Jiaoning acid resistant and preparation method thereof |
| CN117210216B (en) * | 2023-11-09 | 2024-01-30 | 四川大学 | Instant ultrahigh Wen Jiaoning acid resistant and preparation method thereof |
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Application publication date: 20140716 |