弱面地层井壁稳定性分析方法在塔里木油田中的应用

Application of Wellbore Stability Analysis of Weak-surface Formation in Tarim Oilfield

应用弱面地层井壁稳定性分析方法 ,对取自塔里木油田某井的全尺寸岩心的强度参数进行了测定 ,确定出弱面破坏区域 ,进而测定该区域的三轴强度参数 ,最后算出防止弱面地层坍塌的最低钻井液密度为 1 80g/cm3。现场采用 1 81g/cm3钻井液钻井 ,5

The method of wellbore stability analysis of weak-surface formation is used to detect the strength parameters of full scale core from a well in Tarim Oilfield for determining broken area on the weak-surface, then detecting triaxial strength parameters in the area. The least drilling fluid density 1.80 g/cm3 is calculated for preventing the collapse of weak-surface formation, the drilling fluid of 1.81 g/cm3 is deployed in the field, there is no collapse of wellbore below 5760 m.