High-filtration-loss consolidation plugging agent, plugging slurry and preparation method

The invention provides a high-filtration-loss consolidation plugging agent and application, and belongs to the technical field of oil and gas field drilling. The high-filtration consolidation plugging agent consists of a toughening agent, a hardening agent, a filter aid and a slag material. Wherein...

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Main Authors GAO WEI, GENG YUNPENG, FAN SHENG, YI HAO, FANG JUNWEI, ZHANG JUN, LI SHUANGGUI, YU YANG, ZHAI KEJUN, FANG JING, LI YINTING, ZHANG YI, QI BIAO, SHEN QINGYUN
Format Patent
LanguageChinese
English
Published 14.06.2022
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 a high-filtration-loss consolidation plugging agent and application, and belongs to the technical field of oil and gas field drilling. The high-filtration consolidation plugging agent consists of a toughening agent, a hardening agent, a filter aid and a slag material. Wherein the flexibilizer is selected from sepiolite fibers, silicate fibers or polypropylene fibers, the hardening agent is selected from potassium chloride or a mixture of potassium chloride and sodium chloride, the filter aid is selected from diatomite or gypsum, and the slag material is selected from slag Portland cement or blast furnace slag. The plugging slurry prepared from the plugging agent can quickly lose water under the action of pressure difference, the filtration time is less than 45s, the full filtration time can be adjusted to adapt to leakage layers with different sizes, the plugging slurry resides and is solidified in a leakage channel, the bonding property with a seam wall is good, a solidified layer is p
Bibliography:Application Number: CN202011471519