Then from the expression of gas well deliverability in pseudo-steady state flow, there can have the expression of gas PI with and without high speed non-Darcy percolation.
同时还对拟稳定流动气井产能公式进行推导，推导出考虑高速非达西渗流、不考虑高速非达西渗流的采气指数的表达式。
Two dimensional non equilibrium sorption pseudo steady state model of coalbed methane for vertical well is derived in combination of an American model with the filed situation.
借鉴美国现有模型，结合我国现场实际情况，建立了二维煤层气垂直井的非平衡拟稳态井底渗流数学模型。
The relationship of the Pseudo—steady—state stage is derived and judging methods are presented in this paper.
本文对拟稳定阶段关系式进行了系统推导，并提出了判断拟稳定阶段的不同方法。
The relationship of the Pseudo—steady—state stage is derived and judging methods are presented in this paper.
本文对拟稳定阶段关系式进行了系统推导，并提出了判断拟稳定阶段的不同方法。
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