过去一直认为：砂岩含油气后，速度降低，含油性好的储层在地震剖面上就表现为弱振幅特征。
The previous view was that when the sandstone contains oil, the velocity will reduce, and the well oil-bearing reservoir should show weak amplitude feature in the seismic section.
依据油躲剖面图和有效厚度发育情况圈定了含气、含油面积。
Based on the reservoir plotted section and effective thickness, it determines the gas bearing area and oil bearing area.
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