低渗透、致密气藏中压恢式和压降通式的推导

The Deduction of Bu ild-up Formula and General Draw down Formula of the Low-permeability and Tight Gas Reservoir

 曾繁华 梁彬 李闽 杜凯

 西南石油学院

 Southwest Petroleum In stiute, Chengdu 610500, Ch ina

 　 受低渗透、致密气藏渗流数学模型解的形式的制约,气体在低渗透、致密气藏中渗流时的压力恢复公式和多产量测试时的压降通式在国内外的文献中一直没有报道。文中推导了气体在低渗透、致密气藏中渗流时的压力恢复公式和多产量测试时的压降通式,填补了这一领域的空白。

The build-up formula of the low-permeability and tight
gas reservoir aswell as the draw down formula of themultirate
test has not been reported home and abroad because of the
restriction of the form of the mathematical model for the low-
permeability and tight gas reservoir. For the first time, this
paper deduces the build-up formula of the low-permeability
and tight gas reservoir and the general draw down formula of
multirate test, and thus fills up this domain.