大港油田深井井壁稳定问题  

ON DEEP WELLBORE STABILITY FOR DAGANG OIL FIELD

作　　者：路继臣[1] 唐卫国[1] 

机构地区：[1]大港油田集团滩海工程公司,天津300280

出　　处：《岩石力学与工程学报》2000年第z1期967-970,共4页Chinese Journal of Rock Mechanics and Engineering

摘　　要：指出了大港油田深井钻井过程中经常发生的井壁失稳的 3种主要形式 :坍塌、缩径、破裂 ,从岩石力学和物理化学两个主要因素简要分析了井壁失稳的机理 ,结合现场总结出了由地应力因素引起油气井壁失稳常用的 4种控制技术和由钻井液化学因素引起油气井壁失稳最常用的几种防塌钻井液体系。The main three types of wall unstability of borehole, sloughing, squeezing, and fracture, are pointed out during drilling deep well in Dagang oil field. The unstability mechanism of well wall is briefly analyzed in rock mechanics and chemico physics. Through well site practice, four types of technologies are summarized about the unstability of well wall due to in situ stresses with several drilling fluid systems to prevent from unstabilizing caused by chemical factors of the drilling fluid.

关 键 词：大港油田 深井 井壁稳定 地应力 钻井液 控制技术 

分 类 号：TE[石油与天然气工程] 21