摘要
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。
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.
出处
《物探与化探》
CAS
CSCD
2006年第6期533-537,共5页
Geophysical and Geochemical Exploration
关键词
井间地震
资料处理
管波
层析成像
反射波成像
inter-well seismic exploration
data processing
pipe wave
tomographic imagery
reflection wave imagery
