Abstract：Because of dipping bed during drilling process,the wellhead-crossed trace of well is no longer vertical line,but is the spatial curve,which resulted in deviation of first break time used by cross-hole tomographic calculation,affecting the imaging precision.For that reason,the paper presented a method for correction of well deflection.The tests of synthetic cross-hole seismic data and real data showed that the method can solve the errors of first break time caused by well deflection,improving the precision of velocity inversion.
孔庆丰, 左建军, 陈世军, 何惺华, 张建中. 井间直达波层析成像的井斜校正研究与应用[J]. 石油地球物理勘探, 2004, 39(1): 12-16.
Kong Qingfeng, Zuo Jianjun, Chen Shijun, He Xinghua, Zhang Jianzhong. Study on correction of well deflection by tomography of cross-hole first arrival data and application. OGP, 2004, 39(1): 12-16.
