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四维地震技术提高采收率ＬｉｑｉｎｇＸｕ等世界范围内每个油田都有半数以上的油气储量成为死油。即使利用了现有最好技术也难免如此。但是，目前正处于具有深远意义的技术过渡时期，有可能明显地提高采收率。由此产生了四维地震技术或称延时地震技术。１．何谓四维地震技...
Four-dimensional seismic technology to improve oil recovery LiqingXu more than half of the world’s oil and gas reserves have become dead oil. This is inevitable even with the best available technology. However, it is at a time of profound technological transition that it is possible to significantly increase oil recovery. The result is a four-dimensional seismic technique or time-lapse seismic technique. 1. What is 4D seismic technology?