本文从密度和中子测井信息中提取的地层体积密度及含氢指数，分别同气层体积密度及含氢指数的下限值作比较，前者小于后者，直观指示为气层。
In this paper, the stratigraohic volume density and hydrogen index gained from the information of density-neutron logging are respectively compared with both the low-limit values of gas formation.
利用井流物组成模拟计算黑油油藏流体的泡点压力、气油比、地层原油密度和体积系数等参数。
Well production component was applied to simulate and calculate the properties of black oil such as bubble-point pressure, gas-oil ratio, oil viscosity, volume factor, and so on.
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