CN104371701A - Novel environment-friendly shale gas flowback agent - Google Patents
Novel environment-friendly shale gas flowback agent Download PDFInfo
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- CN104371701A CN104371701A CN201410731708.4A CN201410731708A CN104371701A CN 104371701 A CN104371701 A CN 104371701A CN 201410731708 A CN201410731708 A CN 201410731708A CN 104371701 A CN104371701 A CN 104371701A
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- agent
- shale gas
- novel environment
- environment friendly
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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
- C09K8/66—Compositions based on water or polar solvents
- C09K8/68—Compositions based on water or polar solvents containing organic compounds
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- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
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Abstract
The invention discloses a novel environment-friendly shale gas flowback agent. The components include, by weight: 6% to 8% of foaming agent, 4% to 6% of catalyst, 2.5% to 4.5% of surface active agent, 4% to 10% of chloride metal salt and the balance of water. The foaming agent is methyl isobutyl carbinol; the catalyst is sodium hypochlorite; the surface active agent is NPES (sodium nonylphenol polyoxyethylene ether sulfate); the chloride metal salt is potassium chloride or ammonium chloride. The flowback agent has the advantages of high flowback rate, fine environment-friendly performance, high flowback speed, cleanness and pollution avoidance and has significance for normal production of shale gas, environment protection and sustainable development.
Description
Technical field
The present invention relates to production technique field, unconventionaloil pool field, particularly a kind of shale gas novel environment friendly returns row's agent.
Background technology
Shale gas is a kind of important unconventional energy resource, China is in the upsurge of exploitation shale gas in recent years, country explicitly calls for the exploitation advancing the unconventional petroleum resourceses such as shale gas in shale gas " 12 " planning, increase natural gas source supply, alleviate China's natural gas imbalance between supply and demand, readjust the energy structure, promote energy-saving and emission-reduction.Comparatively conventional gas is compared, and because shale formation rate of permeation is very low, development difficulty is very large.Therefore waterfrac treatment is the Main Means of exploitation shale gas, but due to the problem that fracturing fluid recovery (backflow) rate is low after pressing crack construction, can cause reservoir damage; Fracturing outlet liquid has that viscosity is large, stability is high, suspended substance is many, salinity is high and the feature such as complicated component.If do not deal carefully with, immeasurable loss will be caused to the long term growth of shale gas exploitation.In fracturing liquid, add the row's of returning agent can improve the row of returning and lead, but current the used most flowback effect of the row's of returning agent is bad, is difficult to satisfy the demands.Therefore, research and develop a kind of row of returning and lead high, that discharge speed is fast and environment friendly and pollution-free discharge opeing of returning and seem especially important, alleviate the environmental pollution of development block simultaneously, significant for the normal production and Sustainable development ensureing shale gas.
Summary of the invention
The invention provides a kind of shale gas novel environment friendly and return row's agent.This row's of returning agent has the features such as the row of returning efficiently leads, the good feature of environmental protection, discharge speed fast, environment friendly and pollution-free, well solves the problems referred to above.
Technical scheme of the present invention is:
A kind of shale gas novel environment friendly returns row's agent, is mixed with forms by following material:
Pore forming material 6%-8%, catalyzer 4%-6%, tensio-active agent 2.5%-4.5%,
Muriate metal species salt 4%-10%, surplus is water.
Described pore forming material is methyl isobutyl carbinol.
Described catalyzer is clorox.
Described tensio-active agent is nonylphenol polyoxyethylene ether sulfate (NPES).
Described muriate metal species salt is Repone K or ammonium chloride.
Beneficial effect of the present invention is: this row's of returning agent has the features such as the row of returning efficiently leads, the good feature of environmental protection, discharge speed are fast, environment friendly and pollution-free, significant for the normal production and Sustainable development ensureing shale gas.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail.
Embodiment 1:
This novel environment friendly returns row's agent compounding method, each weight percentages of components, and proportioning is as follows:
Pore forming material 6%
Catalyzer 4%
Tensio-active agent 2.5%
Muriate metal species salt 4%
All the other are water.
The row's of returning agent of the present embodiment, by the weight percent of above each composition, successively by pore forming material, catalyzer, tensio-active agent, muriate metal species salt joins in container and stirs, and namely obtains this product after being mixed to uniform state.
Embodiment 2:
This novel environment friendly returns row's agent compounding method, each weight percentages of components, and proportioning is as follows:
Pore forming material 8%
Catalyzer 4.5%
Tensio-active agent 3%
Muriate metal species salt 6%
All the other are water.
The row's of returning agent of the present embodiment, by the weight percent of above each composition, successively by pore forming material, catalyzer, tensio-active agent, muriate metal species salt joins in container and stirs, and namely obtains this product after being mixed to uniform state.
Embodiment 3:
This novel environment friendly returns row's agent compounding method, each weight percentages of components, and proportioning is as follows:
Pore forming material 7.5%
Catalyzer 6%
Tensio-active agent 4.5%
Muriate metal species salt 10%
All the other are water.
The row's of returning agent of the present embodiment, by the weight percent of above each composition, successively by pore forming material, catalyzer, tensio-active agent, muriate metal species salt joins in container and stirs, and namely obtains this product after being mixed to uniform state.
Claims (5)
1. shale gas novel environment friendly returns row's agent, it is characterized in that, it is made up of the material that weight percent is following: pore forming material 6%-8%, catalyzer 4%-6%, tensio-active agent 2.5%-4.5%, muriate metal species salt 4%-10%, and surplus is water.
2. a kind of shale gas novel environment friendly according to claim 1 returns row's agent, it is characterized in that, described pore forming material is methyl isobutyl carbinol.
3. a kind of shale gas novel environment friendly according to claim 1 returns row's agent, it is characterized in that, described catalyzer is clorox.
4. a kind of shale gas novel environment friendly according to claim 1 returns row's agent, it is characterized in that, described tensio-active agent is nonylphenol polyoxyethylene ether sulfate (NPES).
5. a kind of shale gas novel environment friendly according to claim 1 returns row's agent, it is characterized in that, described muriate metal species salt is Repone K or ammonium chloride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410731708.4A CN104371701A (en) | 2014-12-05 | 2014-12-05 | Novel environment-friendly shale gas flowback agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410731708.4A CN104371701A (en) | 2014-12-05 | 2014-12-05 | Novel environment-friendly shale gas flowback agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104371701A true CN104371701A (en) | 2015-02-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410731708.4A Pending CN104371701A (en) | 2014-12-05 | 2014-12-05 | Novel environment-friendly shale gas flowback agent |
Country Status (1)
| Country | Link |
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| CN (1) | CN104371701A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114517081A (en) * | 2020-11-19 | 2022-05-20 | 中石化石油工程技术服务有限公司 | Micro-bubble workover fluid and preparation method thereof |
Citations (5)
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| US20070151726A1 (en) * | 2005-03-16 | 2007-07-05 | Baker Hughes Incorporated | Methods and Compositions for Diverting Acid Fluids in Wellbores |
| CN102250307A (en) * | 2011-05-18 | 2011-11-23 | 安徽绿能技术研究院 | Biobased micro-porous polyurethane material and preparation method thereof |
| CN102516975A (en) * | 2011-12-06 | 2012-06-27 | 中国石油天然气股份有限公司 | Instant recoverable slick water for shale gas reservoir |
| CN103173205A (en) * | 2011-12-20 | 2013-06-26 | 李瑞清 | Foaming flow back agent for oil well fracturing technology |
| CN103497752A (en) * | 2013-09-30 | 2014-01-08 | 中国石油天然气股份有限公司 | Micro-residue liquid instant fracturing fluid |
-
2014
- 2014-12-05 CN CN201410731708.4A patent/CN104371701A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070151726A1 (en) * | 2005-03-16 | 2007-07-05 | Baker Hughes Incorporated | Methods and Compositions for Diverting Acid Fluids in Wellbores |
| CN102250307A (en) * | 2011-05-18 | 2011-11-23 | 安徽绿能技术研究院 | Biobased micro-porous polyurethane material and preparation method thereof |
| CN102516975A (en) * | 2011-12-06 | 2012-06-27 | 中国石油天然气股份有限公司 | Instant recoverable slick water for shale gas reservoir |
| CN103173205A (en) * | 2011-12-20 | 2013-06-26 | 李瑞清 | Foaming flow back agent for oil well fracturing technology |
| CN103497752A (en) * | 2013-09-30 | 2014-01-08 | 中国石油天然气股份有限公司 | Micro-residue liquid instant fracturing fluid |
Non-Patent Citations (2)
| Title |
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| 李明: "国外页岩油气藏压裂改造技术", 《内蒙古石油化工》 * |
| 黄飞 等: "页岩气压裂返排液处理工艺研究", 《环境科学与技术》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114517081A (en) * | 2020-11-19 | 2022-05-20 | 中石化石油工程技术服务有限公司 | Micro-bubble workover fluid and preparation method thereof |
| CN114517081B (en) * | 2020-11-19 | 2023-10-13 | 中石化石油工程技术服务有限公司 | Microbubble workover fluid and preparation method thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Shaoquan Inventor before: Wang Shaoquan Inventor before: Wang Yilin |
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| COR | Change of bibliographic data | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150225 |