致密砂岩气藏渗流机理研究现状及展望

致密砂岩气藏渗流机理是开发致密气的理论基础。通过对致密砂岩气藏渗流机理研究进展进行调研,总结了目前致密气渗流机理的研究现状。并对苏里格致密砂岩气田的岩样进行应力敏感性实验研究。结合目前低渗砂岩气藏的研究现状,提出了致密砂岩气藏渗流机理研究的展望。致密气的有效应力表达式、压裂气井的高速非达西渗流、含水致密气藏的启动压力梯度和水膜厚度对气藏开采的影响,致密气的储层物性分析是今后研究的方向。

The research status and progress on percolation mechanism of tight gas resvervoir

The percolation mechanism of tight gas reservoir is the Basic Theory of development. The research status of tight gas reservoir was surveyed in this paper. The stress sensitivity of core samples in Sulige gas field was studied through experiment. In the meantime, the progress of percolation mechanism of tight gas reservoir was presented associated with the research status of the low permeability gas reservoir. The expression of effective stress of the tight gas reservoir, The non-darcy seepage flow of the fractured gas well,the threshold pressure gradient,the water film thickness and the petrophysical analysis of the tight gas reservoir need to be studied in future.