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A kind of anti-salt lubricant for drilling fluid and preparation method thereof

A drilling fluid and lubricant technology, applied in the field of lubricants, can solve problems such as poor salt resistance, achieve low equipment requirements, simple process flow, and good surface lubrication performance

Active Publication Date: 2021-07-20
中国石油集团川庆钻探工程有限公司钻井液技术服务公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of anti-salt lubricant for drilling fluid and its preparation method, to solve the problem of poor anti-salt performance of existing polysiloxane emulsion type lubricants

Method used

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  • A kind of anti-salt lubricant for drilling fluid and preparation method thereof
  • A kind of anti-salt lubricant for drilling fluid and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0035] The anti-salt lubricant for drilling fluid of the present embodiment includes: by weight, 25 parts of biodiesel, 45 parts of modified polysiloxane, 2 parts of Span, 10 parts of lauryl polyvinyl ether, lauryl dextrose 5 parts of glycosides, 5 parts of sodium dodecylbenzenesulfonate, 5 parts of lubricating additives and 130 parts of water.

[0036] The preparation method of the salt-resistant lubricant for drilling fluid of the present embodiment comprises:

[0037] S1: Preparation of modified polysiloxane;

[0038] (1) Add methyldodecyldimethoxysilane and dimethyltetraphenyldisiloxane to water, and add sodium hydroxide, hydrolyze under stirring, wash with water, neutralize and dry Obtain mixed hydrolyzate;

[0039] (2) Mix the mixed hydrolyzate with hexamethyldisiloxane, add chloroplatinic acid, and react at 40°C for 3 hours under the protection of slight nitrogen, then neutralize, wash with water, and distill under reduced pressure to obtain the modified polymer Sili...

Embodiment 2

[0047] The anti-salt lubricant for drilling fluid of the present embodiment includes: 27 parts of biodiesel, 50 parts of modified polysiloxane, 22 parts of Span, 12 parts of polyvinyl lauryl ether, 6 parts of lauryl glucoside, ten parts 6 parts of sodium dialkylbenzene sulfonate, 8 parts of lubricating aid and 140 parts of water.

[0048] The preparation method of the salt-resistant lubricant for drilling fluid of the present embodiment comprises:

[0049] S1: Preparation of modified polysiloxane;

[0050] (1) Add methyldodecyldimethoxysilane and dimethyltetraphenyldisiloxane to water, and add sodium hydroxide, hydrolyze under stirring, wash with water, neutralize and dry Obtain mixed hydrolyzate;

[0051](2) Mix the mixed hydrolyzate with hexamethyldisiloxane, add chloroplatinic acid, and react at 45°C for 5 hours under the protection of slight nitrogen, then neutralize, wash with water, and distill under reduced pressure to obtain the modified polymer Silicone;

[0052] ...

Embodiment 3

[0059] The anti-salt lubricant for drilling fluid of the present embodiment includes: 30 parts of biodiesel, 52 parts of modified polysiloxane, 25 parts of Span, 15 parts of polyvinyl lauryl ether, 7 parts of lauryl glucoside, ten parts 7 parts of sodium dialkylbenzene sulfonate, 10 parts of lubricating aid and 155 parts of water.

[0060] The preparation method of the salt-resistant lubricant for drilling fluid of the present embodiment comprises:

[0061] S1: Preparation of modified polysiloxane;

[0062] (1) Add methyldodecyldimethoxysilane and dimethyltetraphenyldisiloxane to water, and add sodium hydroxide, hydrolyze under stirring, wash with water, neutralize and dry Obtain mixed hydrolyzate;

[0063] (2) Mix the mixed hydrolyzate with hexamethyldisiloxane, add chloroplatinic acid, and react at 60°C for 8 hours under the protection of slight nitrogen, then neutralize, wash with water, and distill under reduced pressure to obtain the modified polymer Silicone;

[0064...

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Abstract

The invention discloses a salt-resistant lubricant for drilling fluid and a preparation method thereof, belonging to the technical field of lubricants. It includes: by weight, 25-35 parts of biodiesel, 45-60 parts of modified polysiloxane, 20-30 parts of Span, 10-20 parts of lauryl polyvinyl ether, 5 parts of lauryl glucoside ‑10 parts, 5‑10 parts of sodium dodecylbenzenesulfonate, 5‑15 parts of lubricating aid and 130‑180 parts of water. In the invention, the salt-resistant lubricant is prepared by modifying polysiloxane and supplemented with sodium dodecylbenzenesulfonate, which has obvious salt-resistant effect and good dispersibility.

Description

technical field [0001] The invention relates to the technical field of lubricants, in particular to a salt-resistant lubricant for drilling fluid and a preparation method thereof. Background technique [0002] In recent years, with the increasing difficulty and complexity of oil exploration and development, the number of complex wells such as deep wells, ultra-deep wells, and extended-reach horizontal wells has continued to increase. The number of accidents is increasing, and higher requirements are placed on the lubrication performance of drilling fluids. [0003] The improvement of drilling fluid lubrication performance is mainly by adding lubricants to the drilling fluid to reduce the frictional resistance between the drill bit and the rock surface, the drilling tool and the casing or the well wall, and reduce the occurrence of accidents such as pipe sticking. [0004] At present, commonly used drilling fluid fluid lubricants include oil lubricants such as mineral oil or...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/03C08G77/04
CPCC08G77/04C09K8/03C09K2208/34
Inventor 葛炼李万强钱帆胡宗建王姝蕾罗羽嘉于雅璐杨野胡亚玲
Owner 中国石油集团川庆钻探工程有限公司钻井液技术服务公司
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