蒋官澄;姚如钢;李威;夏天果;邓田青;

• 1:中国石油大学(北京)石油工程教育部重点实验室

• 2:中国石油塔里木油田分公司

• 3:中海油田服务股份有限公司油田化学事业部

摘要(Abstract)：

为解决盐水基钻井液高温高密度条件下性能维护困难的问题,通过系列流变性实验并结合粒度分布和Zeta电位分析等,研究老化温度、密度及黏土含量对钻井液性能的影响.结果表明:老化温度和黏土含量对高密度盐水基钻井液黏土聚结有重要影响,黏土聚结程度随黏土含量增大而增大,聚结的临界温度随膨润土质量分数增大而降低;同时,高密度钻井液的亚微米颗粒体积分数较低密度钻井液的高,高温作用将增加钻井液的亚微米颗粒体积分数;高温和高密度将使钻井液Zeta电位降低,使体系胶体稳定性变差.尽量降低高温高密度钻井液中黏土含量,并配合使用耐温抗盐高效护胶剂是维护其性能稳定性的重要途径.

关键词(KeyWords)：盐水基钻井液;黏土聚结;粒度分布;Zeta电位;胶体稳定性

Abstract:

Keywords:

基金项目(Foundation):国家自然科学基金创新研究群体项目(51221003);; 国家科技重大专项(2011ZX05021-004)

作者(Author):蒋官澄;姚如钢;李威;夏天果;邓田青;

Email:

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