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美国LASMO公司为确定一个潜在圈闭究竟是构造假象(速度上拉现象),还是储量可观的气藏,尝试用重力数据和两种不同的叠前深度偏移方案进行了盐下成像和构造识别
To determine whether a potential trap is a structural artifact (velocity pull-up) or a considerable amount of gas reservoirs, LASMO Inc. of the United States attempted to establish sub-salient imaging and tectonic recognition using gravity data and two different prestack depth migration schemes