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Substituted saccharide or substituted glucoside and application of substituted saccharide or substituted glucoside in drilling fluid composition

A technology of glycosides and substituents, applied in the field of substituted sugars or glycosides

Active Publication Date: 2020-01-14
CHINA PETROCHEMICAL CORP +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When this drilling fluid composition is used for high-activity mudstone, shale-bearing formations such as easy-to-collapse formations and shale oil-gas horizontal well drilling, it can achieve the field application effect of oil-based drilling fluids, and is useful for solving the wellbore instability of easy-to-collapse formations. It is of great significance to alleviate the environmental protection pressure brought by oil-based drilling fluids and expand the scope of application of water-based drilling fluids.

Method used

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  • Substituted saccharide or substituted glucoside and application of substituted saccharide or substituted glucoside in drilling fluid composition
  • Substituted saccharide or substituted glucoside and application of substituted saccharide or substituted glucoside in drilling fluid composition
  • Substituted saccharide or substituted glucoside and application of substituted saccharide or substituted glucoside in drilling fluid composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0180] Add 0.2 mol of epichlorohydrin, 2.4 mol of distilled water and 0.004 mol of p-toluenesulfonic acid into a high-pressure reactor equipped with a thermometer, a condenser, and a stirrer, and react at normal pressure at 60°C for 3 hours to obtain 3-chloro-1 , 2-propanediol aqueous solution;

[0181] Cool the 3-chloro-1,2-propanediol aqueous solution to normal temperature, add 0.4 mol of methyl glucoside to it, and react at normal pressure and 80° C. for 0.5 h to obtain a chlorohydrin glycoside solution;

[0182] The chlorohydrin glycoside solution was neutralized with a saturated aqueous sodium hydroxide solution to a pH value of 7, and then 0.4 moL of a 33.3% trimethylamine aqueous solution was added to the bottom of the chlorohydrin glycoside solution, and the addition was completed within 1 hour. React at 40°C for 3 hours to obtain the substituted glycoside component; the yield of the product is 95.25%. The cationic degree of embodiment 1 product is 0.40mmol / g.

[018...

Embodiment 2

[0187] Add 0.2 mol of epichlorohydrin, 3.2 mol of distilled water and 0.014 mol of p-sulfamic acid into a high-pressure reactor equipped with a thermometer, a condenser, and a stirrer, and react at normal pressure and 80°C for 6 hours to obtain 3-chloro-1 , 2-propanediol aqueous solution;

[0188] Cool the 3-chloro-1,2-propanediol aqueous solution to normal temperature, add 0.22 moL ethyl glucoside to it, and react at normal pressure and 90°C for 3 hours to obtain a chlorohydrin glycoside solution;

[0189] Neutralize the chlorohydrin glycoside solution with saturated potassium hydroxide aqueous solution to a pH value of 7, then add 0.2 moL trimethylamine aqueous solution to the bottom of the chlorohydrin glycoside solution, control the addition within 1 hour, and react at 60°C After 7h, the substituted glycoside component was obtained; the yield of the product was 93.57%. The cationic degree of embodiment 2 product is 1.10mmol / g.

[0190] The substituted glycoside component...

Embodiment 3

[0194] Add 0.2 mol of epichlorohydrin, 3.2 mol of distilled water and 0.014 mol of concentrated sulfuric acid into a high-pressure reactor equipped with a thermometer, condenser, and stirrer, and react at normal pressure at 70°C for 4 hours to obtain 3-chloro-1,2 - aqueous solution of propylene glycol;

[0195] Cool the 3-chloro-1,2-propanediol aqueous solution to normal temperature, add 0.22 moL propyl glucoside to it, and react at normal pressure and 100°C for 4 hours to obtain a chlorohydrin glycoside solution;

[0196] The chlorohydrin glycoside solution was neutralized with saturated sodium carbonate to a pH value of 8, then 0.2 moL tripropylamine was added to the bottom of the chlorohydrin glycoside solution, and the addition was controlled within 1 hour, and the reaction was carried out at 50°C for 4 hours to obtain Substituted glycoside component; the yield of the product is 94.03%. The cationic degree of embodiment 3 product is 1.35mmol / g.

[0197] The substituted g...

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Abstract

The invention relates to a substituted saccharide or a substituted glucoside and application of the substituted saccharide or the substituted glucoside in a drilling fluid composition. The substitutedsaccharide or the substituted glucoside has a substituent group A, a substituent group B and a substituent group C, wherein the substituent group A structurally contains a first group, the substituent group B structurally contains a second group, and the substituent group C structurally contains a unit -NH-R7-. Definitions of the groups are as shown in the specification. The drilling fluid composition can show good temperature resistance, filtration reduction performance, antipollution performance, inhibition performance, lubrication performance or reservoir protection performance, and does not have biotoxicity.

Description

[0001] This application claims the priority of the Chinese patent application submitted to the China Patent Office on July 06, 2018, with the application number 201810734568.4, and the title of the invention is "A Near-Oil-Based Drilling Fluid and Its Preparation Method", the entire contents of which are incorporated by reference in this application. technical field [0002] The present invention relates to substituted sugars or glycosides, more particularly to one substituted sugar or glycoside or a mixture of substituted sugars or glycosides. The present invention also relates to a drilling fluid composition produced from the substituted sugar or glycoside and a method for producing the drilling fluid composition. Background technique [0003] During oil and gas drilling, when drilling into highly water-sensitive mud shale and mudstone with high clay mineral content and other easily collapsed formations, conventional water-based drilling fluids cannot effectively inhibit t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/12C08G65/00
CPCC09K8/12C08G65/00C09K2208/34C09K2208/12C09K8/08Y02P20/55C09K8/032C09K8/035C09K8/10
Inventor 王中华司西强
Owner CHINA PETROCHEMICAL CORP
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