摘要
硅酸盐钻井液是一种抑制性能优良、环境相容性好、成本较低的水基钻井液体系。国外近年研究应用较多,而国内研究应用相对滞后。通过抑制性实验、针入度实验及凝胶生成等实验研究,认为该体系稳定井壁机理是:堵塞泥页岩孔隙和微裂缝,阻止滤液进入地层;抑制页岩中粘土矿物水化膨胀和分散;硅酸盐与地层粘土矿物发生化学反应生成利于井壁稳定的新矿物;配合使用的高浓度氯化钠或氯化钾的协同稳定作用。
Silicate- based drilling fluids show strong in hibition, environmental compatibility and low cost The system have been widely studied and applied in recent years By experiments,this paper consider the borehole stability mechanism include plug throats and fissures in shale and inhibited hydration and reaction with clays and coordination with other inorganic salts.
出处
《钻采工艺》
CAS
北大核心
2005年第6期105-107,共3页
Drilling & Production Technology
