CN102108295A - Alkaline anionic surfactant fracturing fluid - Google Patents
Alkaline anionic surfactant fracturing fluid Download PDFInfo
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- CN102108295A CN102108295A CN2009102432329A CN200910243232A CN102108295A CN 102108295 A CN102108295 A CN 102108295A CN 2009102432329 A CN2009102432329 A CN 2009102432329A CN 200910243232 A CN200910243232 A CN 200910243232A CN 102108295 A CN102108295 A CN 102108295A
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- fracturing fluid
- potassium chloride
- anionic surfactant
- surfactant
- fracturing
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Abstract
The invention relates to alkaline anionic surfactant fracturing fluid for fracturing of a low-permeability sandstone reservoir oil field, which is prepared by compounding the following components in parts by weight: oleic acid 2.5-4.0%, potassium chloride 3-6%, ethylenediamine tetraacetic acid 0.3%, potassium hydroxide adjust pH to 9-13, the surplus is water; under the alkaline condition, the viscoelastic surfactant fracturing fluid is formed by oleic acid and potassium chloride, the surfactant is negatively charged, has wide temperature resistance range and can be used within the range of 60-100 ℃; aiming at the problem that the mineralization of formation water influences the activity of an anionic surface to form micelles, adding an EDTA (ethylene diamine tetraacetic acid) scale inhibitor; the gel is broken thoroughly, and the damage to the flow conductivity of the supporting crack is small; in the preparation of the anionic surfactant, potassium chloride is added, so that an anti-swelling agent does not need to be added; the preparation process is simple, the continuous preparation on site can be realized, and the construction process and the generation cost on site are effectively reduced.
Description
Technical field
The present invention relates to a kind of low permeability sandstone reservoirs oil field compression fracture tensio-active agent fracturing liquid, belong to the working fluid that reservoir reconstruction adopts in the oil development.
Background technology
At present, widely used fracturing liquid system can be divided into aqueous fracturing fluid, foamed fracturing fluid, oil base fracturing fluid and emulsification fracturing liquid.The poor stability of oil base fracturing fluid, Master Cost height, temperature resistant capability are weak, filter loss is big.Aqueous fracturing fluid is made up of polymer thickening agent (guar gum, vegetable jelly etc.), linking agent, gel breaker, pH value conditioning agent, sterilant, clay stabilizer and cleanup additive etc., have characteristics such as inexpensive, safe, workable, good combination property, applied range, but the potential problem is infringement sensitive reservoir and residue, the concentrated glue of broken glue and the flow conductivity infringement that filter cake causes.
According to surface chemistry and hydromechanical newest research results, find a kind of fracturing fluid of excellence: a kind of fracturing liquid based on viscoelastic surfactant, this system does not need the broken glue of chemistry, the row's of returning ability is strong, and fracturing fluid residue content is almost nil, changes the wettability of oil reservoir hardly and can stablize clay effectively, make skin effect and oil layer pollution in the fracturing process littler, even, can more effectively improve oil well productivity near zero pollution, fully reach the purpose of hydrocarbon-bearing pool pressure break.
The aqueous fracturing fluid of Oilfield using is divided into vegetable jelly, polymkeric substance and tensio-active agent fracturing liquid substantially.Tensio-active agent fracturing liquid and conventional plant glue base fracturing liquid have important difference aspect rheological, help the extension and the fissured formation of broad of high control of pressure-break and fracture length in pressing crack construction.The cats product fracturing liquid is not clearly to electronegative sandstone reservoir correctional effect.
Summary of the invention
The purpose of this invention is to provide the composite viscoelastic fracturing fluid of a kind of anion surfactant and inorganic salt and alkali, the sandstone reservoir of electronegative property is not had adsorption.
A kind of basic anion tensio-active agent fracturing liquid of the present invention is to form by following component is composite by weight:
Oleic acid 2.5-4.0%
Repone K 3-6%
Ethylenediamine tetraacetic acid (EDTA) (EDTA) 0.3%
Potassium hydroxide is regulated pH to 9-13
Surplus is a water
Above-mentioned oleic acid is anion surfactant, and best working concentration is 2.5-4.0%, and Repone K is thickening material, can impel tensio-active agent formation viscoelastic fracturing fluid and prevent clay movement and the anti-effect of splashing, and best working concentration is 3-6%; Ethylenediamine tetraacetic acid (EDTA) (EDTA) is a Scale inhibitors, and the calcium magnesium in the anti-sealing makes tensio-active agent ineffective, and serves as organic salt and impel tensio-active agent to form viscoelastic fracturing fluid, and best working concentration is 0.3%; Potassium hydroxide is the pH regulator agent, improves the viscosity of tensio-active agent.
The present invention compared with prior art has the following advantages:
1 tensio-active agent is electronegative, and conventional viscoelastic surfactant is formed by quaternary ammonium salt, often positively charged.
2 to have a temperature resistant range wide, can spend in 100 degree scopes 60 and use.
The 3 problems affect anion surface activitys at formation water salinity form micella, add Scale inhibitors EDTA in system.
4 broken glue are thorough, and are little to the injury of supporting crack flow conductivity.
5. anion surfactant has added Repone K in preparation, so do not need to add expansion-resisting agent again.
6. blending process simply can be realized on-the-spot continuous preparation, has effectively reduced on-the-spot working procedure and manufacturing cost.
Embodiment
Embodiment 1
1. with 6% Repone K, potassium hydroxide is regulated pH to 13, and 0.3%EDTA is mixed in proportion, and adds in whipping process in the entry, to dissolving fully, is made into base fluid.
2. 3.5% oleic acid is under agitation added base fluid, can form the anion surfactant fracturing liquid.
3. continuous preparation can be realized in the scene.
Embodiment 2
1. with 3% Repone K, potassium hydroxide is regulated pH to 9, and 0.3%EDTA is mixed in proportion, and adds in whipping process in the entry, to dissolving fully, is made into base fluid.
2. 4.0% oleic acid is under agitation added base fluid, can form the anion surfactant fracturing liquid.
3. continuous preparation can be realized in the scene.
Embodiment 3
1. with 4% Repone K, potassium hydroxide is regulated pH to 10, and 0.3%EDTA is mixed in proportion, and adds in whipping process in the entry, to dissolving fully, is made into base fluid.
2. 2.5% oleic acid is under agitation added base fluid, can form the anion surfactant fracturing liquid.
3. continuous preparation can be realized in the scene.
Claims (1)
1. basic anion tensio-active agent fracturing liquid is characterized in that:
Form by following component is composite by weight:
Oleic acid 2.5-4.0%
Repone K 3-6%
Ethylenediamine tetraacetic acid (EDTA) 0.3%
Potassium hydroxide is regulated pH to 9-13
Surplus is a water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910243232 CN102108295B (en) | 2009-12-29 | 2009-12-29 | Alkaline anionic surfactant fracturing fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910243232 CN102108295B (en) | 2009-12-29 | 2009-12-29 | Alkaline anionic surfactant fracturing fluid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102108295A true CN102108295A (en) | 2011-06-29 |
| CN102108295B CN102108295B (en) | 2013-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200910243232 Active CN102108295B (en) | 2009-12-29 | 2009-12-29 | Alkaline anionic surfactant fracturing fluid |
Country Status (1)
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| CN (1) | CN102108295B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102319550A (en) * | 2011-07-08 | 2012-01-18 | 中国林业科学研究院林产化学工业研究所 | Low-concentration viscoelastic surfactant solution and preparation method thereof |
| CN102352234A (en) * | 2011-10-14 | 2012-02-15 | 陕西科技大学 | Low-harm fracturing fluid and preparation method thereof |
| CN102585794A (en) * | 2011-12-22 | 2012-07-18 | 中国石油天然气股份有限公司 | Residue-free anionic fracturing fluid |
| CN103074047A (en) * | 2012-12-31 | 2013-05-01 | 山西域方天然气开采技术有限公司 | Fracturing agent and fracturing method of coalbed methane horizontal well |
| CN103409128A (en) * | 2013-08-27 | 2013-11-27 | 陕西科技大学 | Clean fracturing fluid with liquid thickening agent and preparation method thereof |
| CN103450871A (en) * | 2013-09-27 | 2013-12-18 | 北京仁创科技集团有限公司 | Environmental-friendly type negative ion fracturing fluid and preparing method thereof |
| CN106590566A (en) * | 2015-10-20 | 2017-04-26 | 中国石油化工股份有限公司 | Method for reducing oil displacement surfactant adsorbed on clay-containing quartz sand |
| CN106928958A (en) * | 2016-12-22 | 2017-07-07 | 陕西延长石油（集团）有限责任公司（延长油矿管理局）油气勘探公司 | A kind of oil-gas field fracturing special chelant |
| CN109135713A (en) * | 2018-09-05 | 2019-01-04 | 安徽炎胜新材料科技有限公司 | A kind of clean fracturing fluid and preparation method thereof for high salinity recovered water |
| CN111454706A (en) * | 2020-01-21 | 2020-07-28 | 克拉玛依金昇油田助剂有限公司 | Naphthenic petroleum sulfonate compound oil displacement agent for fracturing fluid and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5260268A (en) * | 1991-07-18 | 1993-11-09 | The Lubrizol Corporation | Methods of drilling well boreholes and compositions used therein |
| CN1621484A (en) * | 2003-11-28 | 2005-06-01 | 大港油田集团有限责任公司 | Method for preparing residue free fracturing fluid |
-
2009
- 2009-12-29 CN CN 200910243232 patent/CN102108295B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5260268A (en) * | 1991-07-18 | 1993-11-09 | The Lubrizol Corporation | Methods of drilling well boreholes and compositions used therein |
| CN1621484A (en) * | 2003-11-28 | 2005-06-01 | 大港油田集团有限责任公司 | Method for preparing residue free fracturing fluid |
Non-Patent Citations (1)
| Title |
|---|
| 丁里等: "阴离子表面活性剂压裂液的研制及在苏里格气田的应用", 《石油与天然气化工》 * |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102319550A (en) * | 2011-07-08 | 2012-01-18 | 中国林业科学研究院林产化学工业研究所 | Low-concentration viscoelastic surfactant solution and preparation method thereof |
| CN102352234A (en) * | 2011-10-14 | 2012-02-15 | 陕西科技大学 | Low-harm fracturing fluid and preparation method thereof |
| CN102352234B (en) * | 2011-10-14 | 2013-07-24 | 陕西科技大学 | Low-harm fracturing fluid and preparation method thereof |
| CN102585794A (en) * | 2011-12-22 | 2012-07-18 | 中国石油天然气股份有限公司 | Residue-free anionic fracturing fluid |
| CN103074047A (en) * | 2012-12-31 | 2013-05-01 | 山西域方天然气开采技术有限公司 | Fracturing agent and fracturing method of coalbed methane horizontal well |
| CN103409128B (en) * | 2013-08-27 | 2016-04-20 | 陕西科技大学 | A kind ofly use clean fracturing fluid of liquid viscosifying agent and preparation method thereof |
| CN103409128A (en) * | 2013-08-27 | 2013-11-27 | 陕西科技大学 | Clean fracturing fluid with liquid thickening agent and preparation method thereof |
| CN103450871A (en) * | 2013-09-27 | 2013-12-18 | 北京仁创科技集团有限公司 | Environmental-friendly type negative ion fracturing fluid and preparing method thereof |
| CN103450871B (en) * | 2013-09-27 | 2016-02-03 | 北京仁创科技集团有限公司 | A kind of environmentally friendly anionic fracturing fluid and preparation method thereof |
| CN106590566A (en) * | 2015-10-20 | 2017-04-26 | 中国石油化工股份有限公司 | Method for reducing oil displacement surfactant adsorbed on clay-containing quartz sand |
| CN106590566B (en) * | 2015-10-20 | 2021-08-03 | 中国石油化工股份有限公司 | Method for reducing adsorption of surfactant for oil displacement on clay-containing quartz sand |
| CN106928958A (en) * | 2016-12-22 | 2017-07-07 | 陕西延长石油（集团）有限责任公司（延长油矿管理局）油气勘探公司 | A kind of oil-gas field fracturing special chelant |
| CN109135713A (en) * | 2018-09-05 | 2019-01-04 | 安徽炎胜新材料科技有限公司 | A kind of clean fracturing fluid and preparation method thereof for high salinity recovered water |
| CN111454706A (en) * | 2020-01-21 | 2020-07-28 | 克拉玛依金昇油田助剂有限公司 | Naphthenic petroleum sulfonate compound oil displacement agent for fracturing fluid and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN102108295B (en) | 2013-04-24 |
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