摘要
时间推移地震的主要目的是对油藏变化进行监测,为油藏管理提供直接的依据。在油藏中进行的开发措施会引起油藏物性的变化,所采集到的地震数据也会因此而产生差异。利用地震数据的这种差异可以对流体流动、压力变化、温度变化及由开发措施引起的其他效应成像。在时间推移地震差异剖面上,与油藏物性无关的数据要具有复测不变性;与油藏物性有关的差异数据要具有稳定性和可靠性。互均化技术是时间推移地震数据处理的核心,它能有效消除由数据采集误差和处理误差引起的与油藏物性变化无关的假异常。
The main aim in time lapse seismic is to monitor changes in reservoir, and provides direct basis for reservoir management. Reservoir property changes associated with reservoir production processes may lead to changes in seismic response. The productioninduced changes of seismic response can offer possibility to image fluid flow, stress change, temperature change and other effects due to production. In time lapse seismic difference profile, two important characters are repeatability of the seismic data in nonreservoir property of the data volume; the robustness and credibility of the seismic difference anomaly within the reservoir. Crossequalization technology is the key element in time lapse seismic data processing. It can effectively remove seismic acquisition and processing artifact in difference profile.
