特种油气藏2011，Vol.18Issue(5)：71-74,4.
低渗透气藏水平井产能计算新公式
摘要
Abstract
Low permeability gas reservoir usually features stress sensitivity, threshold pressure gradient and high velocity non - Darcy effect, which should be considered in analysis of the productivity of horizontal well in low permeability gas reservoir. A new productivity formula for horizontal well in low permeability gas reservoir has been derived through conformal transformation by taking account of high velocity non - Darcy effect, stress sensitivity and threshold pressure gradient. The result shows that high velocity non -Darcy effect, stress sensitivity and threshold pressure gradient will cause the decrease of horizontal well productivity in low permeability gas reservoir; under the same bottom hole pressure, the production of horizontal well will decrease with the increasing of stress sensitivity coefficient and threshold pressure gradient. The formula is of guiding significance to the development of low permeability gas reservoir with strong stress sensitivity.关键词
低渗透气藏/水平井/产能公式推导/高速非达西效应/应力敏感/启动压力梯度/保角变换Key words
low permeability gas reservoir/ horizontal well/ productivity formula/ high velocity non -Darcy effect/ stress sensitivity/ threshold pressure gradient/ conformal transformation分类
能源科技引用本文复制引用
刘启国,蒋艳芳,张烈辉..低渗透气藏水平井产能计算新公式[J].特种油气藏,2011,18(5):71-74,4.基金项目
教育部博士点基金项目“三维大变化尺度缝洞型碳酸盐岩油藏复杂油水两相流动规律研究”(20105121110006) （20105121110006）
国家“973”计划项目“碳酸盐岩缝洞型油藏注水开发研究”(2011 CB201005) （2011 CB201005）
