地层主应力的确定及在低渗透油田开发中的应用

Determination of Formation Stress and Its Applications in Low Permeable Oilfield Development.

根据椭圆井眼的形成机理 ,利用测井资料预测了 8个地区的地应力方向 ,并结合低渗透油田开发生产实际 ,说明了所预测的地层最大水平主应力方向——压裂裂缝方向的正确性。同时利用长源距声波、密度等测井资料计算了 10口井的地应力值 。

This paper uses logging data to predict the orientation of the formation stress in eight regions on the basis of formation mechanism of elliptical holes. Having investigated reality of the development and production in low permeability oilfield, it is proved that the predicted orientation of the maximum horizontal formation stress,namely, the fracturing orientation of the formation is correct.At last, the formation stresses in over 10 wells are computed and applied to the fracturing and drilling design with the help of the data from the long spacing sonic logging, densilog and so on.