original gas in place

基本解释

In the first place, if the volume of the gas itself (microcosm) was not negligible, he revised the term V in the original equation into Vb.
首先，当分子本身的（微观）体积不可忽略时，他对原来方程中气体的（宏观量）体积项作了修正，即V变成了V-b。
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Original gas in-place (OGIP) and water influx in gas pool by water drive process are the key parameters for determination of a gas pool development scale and production plan.
水驱气藏地质储量和水侵量是确定气藏开发规模和开发设计的重要参数，因此如何准确计算显得非常重要。
It can not only be used to determine original gas in-place and recoverable reserves of gas reservoir, but also judge the drive type and predict future development performance.
它不但可以确定气藏的原始地质储量和可采储量，而且还可以判断气藏的驱动类型，以及预测未来的开发动态。