High-temp. high-pressure hypersalinity drilling fluid rheological property stabilizing agent

Application Number: 00103372
Application Date: 2000.03.02
Publication Number: 1263140
Publication Date: 2000.08.16
Priority Information:
International: C09K7/00
Applicant(s) Name: Wang Bin
Inventor(s) Name: Wang Bin;Wang Feng
Patent Agency Code: 00000
Patent Agent:
Abstract The invented high-temp. high-pressure high-sanility drilling fluid rheological property stabilizing agent is a polymer produced by using olefine acid, ester of olefine acid, olefine sulfonic acid, olefine acidamide, olefine quaternary ammonium salt and phosphorous acid or hypophosphorous acid through a reaction process, in particular it is a polymer prepared by using acrylic acid, 2-hydroxypropyl acrylate, N-(4-sulfophenyl) maleimide, propenyl trimethyl ammonium chloride and phosphorous acid. This polymer possesses high temperature resistance, salt-resisting and high-valence ion resisting property, can effectively regulate rheological propety and thixotropic property of drilling fluid, can be extensively used as drilling fluid rhelogical property stabilizing agent, diluent and stabilizing agent of clay shale.