Preparation and application of leakage-reducing flexible colloidal particle flushing fluid

The invention provides preparation and application of a leakage-reducing flexible colloidal particle flushing fluid. The leakage-reducing flexible colloidal particle flushing fluid mainly comprises the following components: in percent by mass, 0.4-1.0% of flexible colloidal particles, 0.1-0.3% of fi...

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Bibliographic Details
Main Authors JU YAFENG, CHEN SHENGHUAI, LI SANXI, FENG DALONG, WANG SHANGWEI, JIA HU, LUO YOUGANG, CHEN BO
Format Patent
LanguageChinese
English
Published 08.10.2019
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 invention provides preparation and application of a leakage-reducing flexible colloidal particle flushing fluid. The leakage-reducing flexible colloidal particle flushing fluid mainly comprises the following components: in percent by mass, 0.4-1.0% of flexible colloidal particles, 0.1-0.3% of fiber, 0 .01-0.02% of a stabilizer and the balance water, wherein the flexible colloidal particles arecomposed of large-particle size SXK212 and small-particle size SDK302 at a mass ratio of 1:(1-2). The application of the flushing fluid comprises the steps: temporarily blocking blastholes in the ground or serious-leakage formation positions firstly through interaction of the large-size flexible colloidal particles with the fiber so as to reduce liquid leakage during operation, utilizing the small-particle size flexible colloidal particles for well washing and sand flushing in a wellbore subsequently, establishing circulation of well washing and sand flushing, and degrading the flexible colloidal particles into clear
Bibliography:Application Number: CN201910590238