关键词: 致密气储层, 测井解释, 可变岩电参数, 含气指示法

Abstract:

In this paper, we proposed the interpretation thought and method for the tight sandstone gas reservoirs. Firstly, we took the comprehensive evaluation method, combining the traditional quantitative interpretation with the special evaluation and the analysis of geological background to establish the parameters of rock electricity evaluation by dividing structure and deposition. Then, we used the variation of porosity to establish the variation of rock electrical parameters. Based on the analysis of reservoir lithology, physical property background and sensitive curve characteristics, we used the gas bearing attributes of three kinds of porosity curves to identify the gas reservoir attributes. By comparing with the test data and a large number of test results, the accuracy of gas reservoir identification was improved obviously.

Key words: tight gas reservoir, log interpretation, variation of rock electrical parameters, indication method of gas bearing