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4D就是加入时间维的地震油藏监测技术.在油田内安装一套永久性的地震采集系统,反复进行3D地震工作,就可得知油藏随时间的动态变化,以便及时调整开发方案.预计,4D技术可使采收率达到65%～70 %.
4D is a seismic reservoir monitoring technique that incorporates the time dimension.It is estimated that a permanent seismic acquisition system installed in the oilfield and repeated 3D seismic work can know the dynamic change of the reservoir over time so as to adjust the development plan in time. , 4D technology can achieve recovery of 65% to 70%.