互均衡校正技术及其应用

为了有效利用四维地震勘探,保护由油藏本身引起的地震响应差异而消除非油藏引起的地震响应差异,必须对四维地震数据体进行互均衡校正。论述了四维地震数据互均衡处理的原理,提出了寻找最佳匹配滤波器获得校正算子的处理方法,并结合某地区的四维地震资料,运用互均衡技术对其进行了校正处理,很好地消除了非期望差异,进一步验证了该方法的正确性和有效性。

Cross-Equalization Calibration Technique and Its Application

In 4-D seismic monitoring of reservoirs, twice repeated measured data are of non-consistency because of various factors, occurring in time-delay, energy difference/variation, bandwidth variation and phase variation of signals. In order to effectively make use of 4-D seismic data, protect the variations resulted from fluid and oil-gas reservoir and remove the variations resulted from non-reservoir, the cross-equalization calibration on 4-D seismic data should be made. This article describes the theory of cross-equalization processing, presents the method for obtaining best corrector matching filters. The case study indicates that this technique can be used to well remove the undesired variations, verifying the correctness and effectiveness of this technique.