辽河油田井间地震纵波和横波层析成像

Tomography of crossborehole seismic P and S-waves in Liaohe oil fields

辽河油田于1992年和1993年先后在B区和H区，采用在一口井中用小药量激发，在另一口井中接收，进行野外并间地震数据采集，得到了质量较高的井间数据。根据两地区地震地质条件的特征，特别是地震速度对比差比较大的特征，使用了石油大学CT处理系统中曲射线层析方法，利用初至波和续至波进行层析成像，获得了B区纵波成像剖面，H区横波成像剖面。

Good crossborehole seismic data from B and H areas in Liaohe oil fields were respectively collected by exploding small charge in one borehole and receiving seismic waves in another one in 1992 and 1993. In view of different seismic and geologicconditions, particularly the distinct velocity contrast in the two ateas, compreSsional wave section in B area and shear wave section in H area were respectively produced by conducting tomography of first atrivals and late arrivals with the aid of curved-ray tomographic algorithm of Petroleum University's CT data processihg system.