Double protection type perforation fluid

The present invention discloses a double protection type perforation fluid, which comprises the following components, by mass, 100 parts of water, 0.2-0.5 part of a tackifier, 0.8-2 parts of a filtrate reducer, 2-3 parts of an anti-swelling agent, 0.05-0.15 part of a surface active agent and 0.05-0....

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Main Authors HE PIXIANG, HU CHENGLIANG, HAN XIANGYONG, JI QINGRONG, SONG YUWEN, XIONG YING, RAO FUPEI, WANG XINGWEI, CHEN JIANGUANG, LI QIAN
Format Patent
LanguageChinese
English
Published 30.01.2013
Subjects
ADHESIVES
CHEMISTRY
DYES
MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
PAINTS
POLISHES
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Summary:The present invention discloses a double protection type perforation fluid, which comprises the following components, by mass, 100 parts of water, 0.2-0.5 part of a tackifier, 0.8-2 parts of a filtrate reducer, 2-3 parts of an anti-swelling agent, 0.05-0.15 part of a surface active agent and 0.05-0.2 part of a gel breaker. The double protection type perforation fluid has the following characteristics that: the double protection type perforation fluid has a certain viscosity so as to provide good effects of cleaning and chip carrying while ensure pumping; filter loss is low so as to minimize damage on stratum by the filtrate; anti-swelling rate is high so as to inhibit clay hydration expansion; interfacial tension is low so as to facilitate fluid flowback and reduce water blocking damage; with automatic polymer degradation and gel breaker application, damage caused by polymer adsorption are eliminated; and core permeability recovery rate is high, and a good protection effect is provided for the oil layer so as
Bibliography:Application Number: CN20111209480