VSP与3D地震资料的联合处理

Vsp-3D seismic data joint processing

地矿部西南石油局第二物探大队, 德阳618000

The 2nd Geophysical Exploration Party of Southwest Burcau of Petroleum Geolosy,MGMR,Deyang City,Intercode: 618000

在VSP与其井旁3D地震资料在同一小区域内反射系数R(t)相同的条件下, 利用VSP提取3D地震资料的子波, 可实现稳定、可靠、高分辨率的子波反褶积。由于VSP走廊叠加与地质柱状剖面有良好的可对比性, 使这种条件约束的子波反褶积置信度高, 有利于储层描述研究, 对重新利用和研究老资料很有用处, 能大幅度提高分辨率而又不增加野外投资, 是一项经济而又十分有效的方法技术。

On condition that the renection coefficients R(t) of VSP and near-wellbore seismic data are almost equal in a small area,wavelet deconvolution,which is stable,reliable,and high resolution,can be performed with 3D seismic wavelet cxtracted from VSP. Because of good cortelation between VSP corridor stack and geologic column section,such a wavelet deconvolution has a high confidence and is benificial to the study of teservoir description. The deconvolution is also useful in reusing and studying old seismic data. Therefore the proposed technique is cost-effective and can greatly Anprove the resolution without increasing exploration expenditure.