VSP三分量检波器定向

Orientation method of 3C well seismometer in VSP

本文通过VSP三分量检波器定向方法对原始资料进行坐标旋转定向。首先,分析井下检波器接收的三分量资料之间的方向关系;其次,根据旋转前和旋转后三分量资料的坐标关系研究三分量坐标旋转定向原理,得到旋转基本公式;最后,给出VSP检波器水平分量方位角在零井源距和非零井源距情况下的计算方法,并利用该方法对某油田实际斜井VSP三分量资料完成了旋转定向。旋转定向结果验证了该方法的有效性和实用性。

The coordinate of the base data are oriented rotationally by orientation method of 3C well seismometer in VSP. First, the relations between the directions of the 3C data received by the well seismometers are analyzed, secondly, the principles of the 3C coordinate rotation orientation are analyzed according to the relations between the coordinates of the 3C data before and after rotated, the 3C data rotation formulas are obtained, finally, the computa- tional methods are derived with the azimuths of the horizontal component of the seismometers are at the zero offset VSP and nonzero offset VSP, and the 3C data of a inclined well are oriented rotationally by the methods. The result shows the effectiveness and practicality of the method.