论文部分内容阅读
声发射效应方法是确定油田地应力的一种有效方法，但以往主要应用于竖井情况。本文首次将声发射效应方法应用于斜井的非定向取芯岩样，并通过应为坐标变换，求解非线性方程组，确定大地坐标中的主地应力。此方法应用于渤海油田并取得了满意效果。
The AE method is an effective method to determine the in-situ stress of the oilfield, but has been mainly applied to the shaft case in the past. In this paper, the acoustic emission effect method is firstly applied to non-directional coring samples in deviated wells, and the nonlinear equations are solved by coordinate transformation to determine the principal earth stress in the geodetic coordinates. This method has been applied to Bohai Oilfield and has achieved satisfactory results.