断裂页岩地层中井筒坍塌压力的计算方法研究

Calculation Method of Collapse Stress in Shaft at the Fractured Shale Formation

为减少钻井风险和造价,建立了碎屑岩中塌孔压力的计算方法。根据某工程,通过本方法计算出的井筒坍塌应力与实测值进行了对比,结果发现计算值与实测值吻合良好。

The calculation method of collapse stress at the shale formation is established to reduce the shaft risk and cost.Based on a project,the calculated values and testing values are compared with this method.The result shows that the calculated values are in good agreement with testing values.