低渗气藏压敏性对合理产能影响研究  

THE INFLUENCE OF REASONABLE PRODUCTION ON PRESSURE-SENSITIVITY IN LOW PERMEABILITY GAS RESERVOIR

作　　者：邓江明[1] 张茂林[1] 梅海燕[1] 陈怀刚[2] 杨小平[3] 

机构地区：[1]西南石油大学,四川成都610500 [2]中国石油西南油气田分公司川中油气矿 [3]中国石油吉林油田

出　　处：《西南石油大学学报（自然科学版）》2007年第4期107-109,共3页Journal of Southwest Petroleum University(Science & Technology Edition)

摘　　要：大量研究表明:低渗气藏有着较强的压敏效应。随着生产的进行,储层压力下降,有效应力不断变化,引起气藏产能逐渐降低。通过引入渗透率应力变化系数对运动方程进行改进,为数值模拟研究提供理论基础。同时采用固定围压,降低流体压力的方法测定出渗透率的应力变化系数,然后采用数值模拟软件ECLIPSE对苏里格气田的Su-X井进行研究,模拟考虑和不考虑压敏性时生产指标的变化,从而综合分析压敏性在低渗气藏开采过程中的影响程度,最后在考虑压敏性的条件下对该井进行合理产量的动态预测,以制定出定合理的生产制度,取得了较好的生产效果,为开采此类低渗透气藏提供了理论依据。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.

关 键 词：低渗透 敏感性 数值模拟 合理产能 苏里格气田 

分 类 号：TE348[石油与天然气工程—油气田开发工程]