Nanometer amphiphobic surfactant and nanometer drainage fracturing fluid for low-permeability compact oil and gas reservoir

The invention discloses a nano amphiphobic surfactant and a nano displacement fracturing fluid for a low-permeability compact oil and gas reservoir. The nano amphiphobic surfactant is prepared by the following steps: by taking poly (neopentyl glycol adipate)-1, 6-hexanediol glycol and an alkyl-termi...

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Main Authors LI SHIHENG, CHANG QING, HAO PENGTAO, DONG BINGXIANG, LYU SHUANG, CHEN TING, LI WEI, WANG YUE, ZHANG XIAOJUN, SEO HO-EUN, WANG HONGKE
Format Patent
LanguageChinese
English
Published 27.10.2023
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 discloses a nano amphiphobic surfactant and a nano displacement fracturing fluid for a low-permeability compact oil and gas reservoir. The nano amphiphobic surfactant is prepared by the following steps: by taking poly (neopentyl glycol adipate)-1, 6-hexanediol glycol and an alkyl-terminated polysiloxane linear body as main agents, pre-polymerizing the main agents with diisocyanate, reacting the obtained prepolymer with N-butyl diethanol amine and methyl pyrrolidone for chain extension, and then reacting with a silane coupling agent to realize end capping, thereby obtaining the nano amphiphobic surfactant. And finally, emulsifying in a mixed solution of triethylamine and methyl pyrrolidone. The nano drainage fracturing fluid for the low-permeability compact oil and gas reservoir is prepared by uniformly dispersing a cross-linking fluid in a base fluid containing a nano amphiphobic surfactant. The micelle particle size of the nano-amphiphobic surfactant meets the requirement of entering a micropor
Bibliography:Application Number: CN202210411075