摘要
塔参１井是迄今为止在塔里木盆地钻成的陆上第一超深井。该井在钻进奥陶系、寒武系白云岩地层时，井眼发生严重坍塌，导致难以继续钻进。本文从地层岩石矿物组分、理化性能和地应力三方面分析了井眼坍塌的原因。经室内一系列封堵试验，现场采用密度适当的钻井液并加入软化点适当、颗粒度较小的封堵材料加强对地层裂缝、微裂缝的封堵。
Tacan Well 1 , as the first ultradeep exploratory well in Tarim so far, encountered severe wellbore collapsing and hardly continue drilling in dolomite formation. The paper analyzed the reason from the aspects of rock mineralogical composition, physicchemical properties and insitu stress. Through a series of lab plugging experiments and adding lost circulation materals in field , the collapsing problem has been successfully solved.
出处
《石油钻探技术》
CAS
北大核心
1999年第2期35-37,共3页
Petroleum Drilling Techniques
关键词
超深井
井眼稳定
白云岩
防塌钻井液
地层防塌
ultradeep well,hole stabilization,drilling fluid density,filter cake,ordovician period,cambrian period,dolostone,plugging,antisloughing drilling fluid
