CN105199687A - Slurry for protecting oil and gas reservoir - Google Patents
Slurry for protecting oil and gas reservoir Download PDFInfo
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- CN105199687A CN105199687A CN201410271803.0A CN201410271803A CN105199687A CN 105199687 A CN105199687 A CN 105199687A CN 201410271803 A CN201410271803 A CN 201410271803A CN 105199687 A CN105199687 A CN 105199687A
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- parts
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- gas reservoir
- slurry
- potassium
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Abstract
The invention provides slurry for protecting an oil and gas reservoir, and belongs to the field of oil field drilling engineering. The problem that existing common slurry cannot meet complex conditions of oil and gas reservoir protection is solved. The slurry for protecting the oil and gas reservoir is prepared from, by weight, 25-40 parts of bentonite, 3 parts of xanthan gum, 0.1-0.3 part of potassium hydroxide, 2 parts of hydroxyethyl cellulose, 2 parts of sulfonated-pheno-formoldehyde resin, 1 part of ammonio hydrolysis polyacrylonitrile, 2-3 parts of potassium tannate, 40-50 parts of potassium formate, 10-30 parts of sodium formate, 1-30 parts of active barite, 1 part of sulfonated lignite, 5 parts of hydroxypropyl starch, 4 parts of white asphalt, 2.5 parts of graphite, 2-3 parts of calcium carbonate powder and 1000 parts of water. The slurry for protecting the oil and gas reservoir is high in compatibility with oil and gas reservoir rock and fluid, ensures the original balance of the oil and gas reservoir to the greatest extent, protects the oil and gas reservoir to the maximum degree, and is more beneficial to development of all kinds of work of oil testing or production departments in the future.
Description
Technical field
The invention belongs to oil drilling engineering field, be specifically related to the mud for the protection of hydrocarbon zone in a kind of petroleum drilling and mining.
Background technology
The object of drilling well gives formation testing or oil recovery department a bite is harmless or the Oil/gas Well of low infringement.In drilling well, the infringement of hydrocarbon zone is not only affected to discovery and the oil gas well yield of hydrocarbon zone, also can bring impact to the degree of the infringement of every operation from now on oil reservoir and operation effectiveness.Therefore do the reservoir protec-tion work in drilling process well, to raising exploration, exploiting economy benefit is most important.
When hydrocarbon zone left by brill, under positive pressure differential, capillary force effect, mud solid phase enters hydrocarbon zone and causes pore throat to block, liquid phase enters hydrocarbon zone and hydrocarbon zone rock and fluid matasomatism, destroy the original balance of hydrocarbon zone, thus bring out hydrocarbon zone potential damage factors, cause permeability plugging.
Existing mud can not meet the complicated requirement of hydrocarbon zone.
Summary of the invention
For solving the problem, the invention provides the mud for the protection of hydrocarbon zone in a kind of petroleum drilling and mining, adopting following technical scheme:
A mud for reservoir protec-tion, is characterized in that, by weight, its formula is: wilkinite 25 ~ 40 parts; Xanthan gum 3 parts; 0.1 ~ 0.3 part, potassium hydroxide; Sodium hydroxyethyl cellulose 2 parts; Sulfonated-pheno-formoldehyde resin 2 parts; Ammonium hydrolyzed polyacrylonitrile 1 part; Potassium tannate 2 ~ 3 parts; Potassium formiate 40 ~ 50 parts; Sodium formiate 10 ~ 30 parts; Activity barite 1 ~ 30 part; Sulfonated lignite 1 part; Hydroxypropylated starch 5 parts; Albino bitumen 4 parts; 2.5 parts, graphite; Calcium carbonate powders 2 ~ 3 parts; 1000 parts, water.
Beneficial effect of the present invention is as follows:
Mud for the protection of hydrocarbon zone provided by the invention, high with the compatibleness of hydrocarbon zone rock and fluid, as far as possible ensure the original balance of hydrocarbon zone, can reservoir protec-tion to greatest extent, be more conducive to carrying out of the work in every of formation testing from now on or oil recovery department.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art and understand the present invention further, but not limit the present invention in any form.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, some distortion and improvement can also be made.These all belong to protection scope of the present invention.
embodiment 1
A mud for reservoir protec-tion, by weight, its formula is: wilkinite 25 parts; Xanthan gum 3 parts; 0.3 part, potassium hydroxide; Sodium hydroxyethyl cellulose 2 parts; Sulfonated-pheno-formoldehyde resin 2 parts; Ammonium hydrolyzed polyacrylonitrile 1 part; Potassium tannate 2 parts; Potassium formiate 50 parts; Sodium formiate 10 parts; Activity barite 13 parts; Sulfonated lignite 1 part; Hydroxypropylated starch 5 parts; Albino bitumen 4 parts; 2.5 parts, graphite; Calcium carbonate powders 2 ~ 3 parts; 1000 parts, water.
embodiment 2
A mud for reservoir protec-tion, by weight, its formula is: wilkinite 40 parts; Xanthan gum 3 parts; 0.1 part, potassium hydroxide; Sodium hydroxyethyl cellulose 2 parts; Sulfonated-pheno-formoldehyde resin 2 parts; Ammonium hydrolyzed polyacrylonitrile 1 part; Potassium tannate 3 parts; Potassium formiate 40 parts; Sodium formiate 30 parts; Activity barite 10 parts; Sulfonated lignite 1 part; Hydroxypropylated starch 5 parts; Albino bitumen 4 parts; 2.5 parts, graphite; Calcium carbonate powders 2 parts; 1000 parts, water.
embodiment 3
A mud for reservoir protec-tion, by weight, its formula is: wilkinite 30 parts; Xanthan gum 3 parts; 0.1 ~ 0.3 part, potassium hydroxide; Sodium hydroxyethyl cellulose 2 parts; Sulfonated-pheno-formoldehyde resin 2 parts; Ammonium hydrolyzed polyacrylonitrile 1 part; Potassium tannate 2 ~ 3 parts; Potassium formiate 40 parts; Sodium formiate 10 parts; Activity barite 1 ~ 30 part; Sulfonated lignite 1 part; Hydroxypropylated starch 5 parts; Albino bitumen 4 parts; 2.5 parts, graphite; Calcium carbonate powders 2 ~ 3 parts; 1000 parts, water.
embodiment 4
A mud for reservoir protec-tion, by weight, its formula is: wilkinite 28 parts; Xanthan gum 3 parts; 0.3 part, potassium hydroxide; Sodium hydroxyethyl cellulose 2 parts; Sulfonated-pheno-formoldehyde resin 2 parts; Ammonium hydrolyzed polyacrylonitrile 1 part; Potassium tannate 2 ~ 3 parts; Potassium formiate 45 parts; Sodium formiate 10 parts; Activity barite 1 ~ 30 part; Sulfonated lignite 1 part; Hydroxypropylated starch 5 parts; Albino bitumen 4 parts; 2.5 parts, graphite; Calcium carbonate powders 2 ~ 3 parts; 1000 parts, water.
Claims (1)
1. a mud for reservoir protec-tion, is characterized in that, by weight, its formula is: wilkinite 25 ~ 40 parts; Xanthan gum 3 parts; 0.1 ~ 0.3 part, potassium hydroxide; Sodium hydroxyethyl cellulose 2 parts; Sulfonated-pheno-formoldehyde resin 2 parts; Ammonium hydrolyzed polyacrylonitrile 1 part; Potassium tannate 2 ~ 3 parts; Potassium formiate 40 ~ 50 parts; Sodium formiate 10 ~ 30 parts; Activity barite 1 ~ 30 part; Sulfonated lignite 1 part; Hydroxypropylated starch 5 parts; Albino bitumen 4 parts; 2.5 parts, graphite; Calcium carbonate powders 2 ~ 3 parts; 1000 parts, water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410271803.0A CN105199687A (en) | 2014-06-18 | 2014-06-18 | Slurry for protecting oil and gas reservoir |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410271803.0A CN105199687A (en) | 2014-06-18 | 2014-06-18 | Slurry for protecting oil and gas reservoir |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105199687A true CN105199687A (en) | 2015-12-30 |
Family
ID=54947653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410271803.0A Pending CN105199687A (en) | 2014-06-18 | 2014-06-18 | Slurry for protecting oil and gas reservoir |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105199687A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112048289A (en) * | 2020-10-20 | 2020-12-08 | 河北省煤田地质局第二地质队 | High-salinity water-based drilling fluid and preparation method thereof |
Citations (7)
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|---|---|---|---|---|
| CN101676360A (en) * | 2008-09-18 | 2010-03-24 | 中国石油天然气股份有限公司 | Ultra-low permeability oil layer protection drilling fluid for horizontal well |
| US20100089650A1 (en) * | 2007-03-02 | 2010-04-15 | Techstar Energy Services Inc. | Drilling fluid and method for drilling in coal-containing formations |
| CN101851492A (en) * | 2009-08-14 | 2010-10-06 | 新疆德蓝股份有限公司 | High-temperature high-pressure salt-resistant high-density drilling fluid |
| CN101935519A (en) * | 2010-08-09 | 2011-01-05 | 中联煤层气国家工程研究中心有限责任公司 | Drilling fluid and preparation method thereof |
| CN101948678A (en) * | 2010-06-29 | 2011-01-19 | 西南石油大学 | Nontoxic potassium formate polyalcohol drilling fluid |
| CN102766446A (en) * | 2012-07-25 | 2012-11-07 | 中国石油大学(北京) | High-temperature-resistant high-density formate polysulfonate drilling fluid and preparation method thereof |
| CN102851009A (en) * | 2012-09-27 | 2013-01-02 | 北京奥凯立科技发展股份有限公司 | Organic salt high-density drilling fluid |
-
2014
- 2014-06-18 CN CN201410271803.0A patent/CN105199687A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100089650A1 (en) * | 2007-03-02 | 2010-04-15 | Techstar Energy Services Inc. | Drilling fluid and method for drilling in coal-containing formations |
| CN101676360A (en) * | 2008-09-18 | 2010-03-24 | 中国石油天然气股份有限公司 | Ultra-low permeability oil layer protection drilling fluid for horizontal well |
| CN101851492A (en) * | 2009-08-14 | 2010-10-06 | 新疆德蓝股份有限公司 | High-temperature high-pressure salt-resistant high-density drilling fluid |
| CN101948678A (en) * | 2010-06-29 | 2011-01-19 | 西南石油大学 | Nontoxic potassium formate polyalcohol drilling fluid |
| CN101935519A (en) * | 2010-08-09 | 2011-01-05 | 中联煤层气国家工程研究中心有限责任公司 | Drilling fluid and preparation method thereof |
| CN102766446A (en) * | 2012-07-25 | 2012-11-07 | 中国石油大学(北京) | High-temperature-resistant high-density formate polysulfonate drilling fluid and preparation method thereof |
| CN102851009A (en) * | 2012-09-27 | 2013-01-02 | 北京奥凯立科技发展股份有限公司 | Organic salt high-density drilling fluid |
Non-Patent Citations (3)
| Title |
|---|
| 周光正 等: "甲酸盐钻井液在大港油田的应用", 《钻井液与完井液》 * |
| 李青和 等: "胜利油区防塌钻井液的研发及应用", 《油田化学》 * |
| 韩玉华等: "大庆油田外围开发井甲酸盐钻井液研究与应用", 《钻井液与完井液》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112048289A (en) * | 2020-10-20 | 2020-12-08 | 河北省煤田地质局第二地质队 | High-salinity water-based drilling fluid and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151230 |