川西地区碎屑岩深井钻井提速的配套钻井液技术

为解决四川盆地西部地区碎屑岩深井钻井出现的钻井周期长、钻速低等问题，从钻井液的类型、组成和性能入手，在调研国内外资料的基础上，分井段评价了川西地区所用钻井液各参数（钻井液密度、钻井液固相、钻井液流变性及钻井液滤失性）对钻井速度的影响程度，依托中国石油化工集团公司的各级科研成果，研发了适合中浅层钻井提速的无黏土相钻井液、“三低”（低密度、低黏切、低固相）和“三强”（强抑制、强包被、强封堵）聚合物钻井液等钻井液体系，形成了以预防和减少深井井下复杂情况和钻井事故为目标的稳定井壁、防漏堵漏、润滑防卡等技术。上述技术在川西地区新21-1H、新916-1井等多口井集成应用后，中浅层钻井速度明显提高，中深层井下复杂情况及钻井事故发生率明显降低，缩短了钻井周期，达到了钻井提速的预期目标。

Drilling fluid technology for a high ROP in drilling deep wells through clastic rocks,western Sichuan Basin

A long drilling circle and a low ROP are bottlenecks in drilling through deep clastic rocks in the western Sichuan Basin.In view of this,an investigation is made into the related literatures at home and abroad.On this basis,in terms of the types,composition,and performance of drilling fluids,an evaluation analysis is made of the influence degree of drilling fluid parameters including density,solid contents,rheology,and filtration,on the ROP in drilling at different intervals in this study area.And by referr...