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additive for borevaesker for stabilization of skiferler and procedure for drilling in skiferler
additive for borevaesker for stabilization of skiferler and procedure for drilling in skiferler
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机译:用于稳定页岩壳的钻井液添加剂和在页岩壳中钻井的程序
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摘要
Additive compositions and aqueous drilling fluids which impart improved wellbore stability in drilling shale formations consisting essentially of one or more water-soluble high molecular weight polymers capable of forming relatively strong nucleophilic sites when treated with base and one or more potassium salts which have sufficient alkalinity to raise the pH of the resultant drilling fluid to above 9.0, but whose anions are relatively weak nucleophiles compared to the polymeric nucleophilic sites.
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