压降法实质上是定容封闭性气田特定的物质平衡法，或称直线外推法。目前它是气田（特别是裂缝性碳酸盐岩气田）较为广泛使用的一种储量计算方法。压降法适用于采出程度大于10%的封闭性气藏。对于边、底水不活跃的断块、裂缝、岩性圈闭等复杂气田也可使用。对连通性差的气藏储量计算结果偏小。它不适用于边、底水活跃的气藏。该方法计算的储量一般为已开发探明储量，在扣除废弃压力后所计算的储量可作为可采储量。
... pressure drop effect ==> 压降效应 pressure drop method ==> 压降法 pressure drop oscillation ==> 压降振荡 ...
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以附加压降法为基础，对整套宝钢4号高炉喷煤系统的压降作了模型计算。
A pressure drop model of PCI system was developed for Baosteel No. 4 blast furnace based on the additional pressure drop.
通过对压降法不同形式的分析，找到了各自在测量上的特点及相互间的差别。
With the analysis to the different forms of pressure drop method, the characteristics and differences of each ones about measurement are obtained.
论文在以下几个方面取得重要研究成果：第一，组分变化对压降法储量计算的影响。
There are some important achievements in this paper in terms of the following aspects: I. Composition variation has impact on calculation of reserves when using pressure drawdown technology.
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