Hydrolyzable temporary plugging agent and degradable drilling fluid

The invention provides a hydrolyzable temporary plugging agent and a degradable drilling fluid. The hydrolyzable temporary plugging agent comprises a blending material of high-molecular-weight polylactic acid and acid-soluble particles; wherein the high-molecular-weight polylactic acid is polylactic...

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Hauptverfasser: YAO XUYANG, ZHANG JIE, ZHAO LI, CHANG HAN-SEOK, ZHOU SHUANGJUN, ZHANG JUN, GUO JIANHUA, ZHAO ZHILIANG, SHEN XINYU, WANG SHUANGWEI, HUANG KUN
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creator YAO XUYANG
ZHANG JIE
ZHAO LI
CHANG HAN-SEOK
ZHOU SHUANGJUN
ZHANG JUN
GUO JIANHUA
ZHAO ZHILIANG
SHEN XINYU
WANG SHUANGWEI
HUANG KUN
description The invention provides a hydrolyzable temporary plugging agent and a degradable drilling fluid. The hydrolyzable temporary plugging agent comprises a blending material of high-molecular-weight polylactic acid and acid-soluble particles; wherein the high-molecular-weight polylactic acid is polylactic acid of which the molecular weight is greater than or equal to 15 million. The degradable drilling fluid is prepared from 1000 parts by weight of water, 30 to 50 parts by weight of soil, 5 to 10 parts by weight of alkali liquor, 20 to 50 parts by weight of polyether polyol, 10 to 20 parts by weight of high-molecular polymer, 30 to 50 parts by weight of nano emulsion, 2 to 6 parts by weight of propylene copolymer and the hydrolyzable temporary plugging agent. Wherein the high-molecular polymer can be, but not limited to, one or a combination of more than two of modified starch, modified cellulose, polyacrylonitrile, polyacrylamide, polyethylene glycol terephthalate, polyoxyethylene and polyethylene. 本发明提供了一种可水解暂堵剂及
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subjects ADHESIVES
CHEMISTRY
DYES
MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
PAINTS
POLISHES
title Hydrolyzable temporary plugging agent and degradable drilling fluid
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