井间地震资料处理方法研究与应用

由于避开了近地表低降速带和风化层的影响,井间地震可以得到高分辨率和高信噪比的地震信号,近年来已经在在油田开发中投入使用.笔者讨论了井间地震的井中管波的形成机理、衰减方法,层析成像和XSP-CDP成像方法.对罗家和垦71区井间资料进行了成功的处理,得到了较好的层析和反射波成像结果,该结果有助于了解井间速度的横向展布和小断层的存在等.

THE STUDY AND APPLICATION OF THE INTER-WELL SEISMIC DATA PROCESSING

Avoiding the influence of the near-surface low-velocity zone and the weathering bed, the inter-well seismic exploration can obtain seismic signals with high resolution and high signal-to-noise ratio. The technique has been put into use in recent years. Three problems concerning the inter-well seismic exploration have been discussed in this paper, namely, the formation mechanism and the at- tenuation method of the inter-well pipe wave, the method for tomographic imagery and that for XSP-CDP imagery. The inter-well data from Luojia and Ken-71 area were successfully processed, with relatively satisfactory tomographic imagery and reflection wave imagery obtained. These results help us understand the transverse spreading of the inter-well velocity and the existence of small faults.