关键词: 低渗透, 敏感性, 数值模拟, 合理产能, 苏里格气田

Abstract: A lot of researches indicate that the existence of stress sensibility appears frequently in the low permeability gas reservoir. The fluid pressure and effective stress will change in the course of production, and it will induce the productivity decreasing. In order to improve the equation of motion, the authors of the paper introduce permeability stress alternation factor to offer theoretical basis for numerical simulation. At the same time, the method of fixing peripheral pressure and decreasing fluid pressure is used to measure permeability stress changing factor, based on the results of the experiment, the numerical simulation software Eclipse is utilized to research SuX well in SuLiGe gas field, which will mainly simulate the change of production index considering and not considering the stress sensibility to analyze the influence of stress sensibility in the low permeability gas reservoir, finally the dynamic prediction of reasonable production is done to work out resonable production scheme, which provides a reference for the exploitation of low permeability gas reservoir under the condition of considering the character of pressuresensitivity.

Key words: low permeability, sensitivity, numerical simulation, reasonable production, Sulige gas field