摘要
低渗气藏存在明显的应力敏感性。文中采用固定围压、改变内压(四升四降内压)的方法,研究内压变化对储集层渗透率的影响,同时分析评价渗透率的应力敏感性。根据实验结果,采用数值模拟软件对苏里格气田的低渗气井进行不同的开采方式研究,进一步论证应力敏感对低渗气井开采带来的影响,提出合理的开采方式,为低渗透气藏的开采提供参考。
Many researches indicate that the existence of stress sensibility appears frequently in low permeability gas reservoir.The method of fixing peripheral pressure and altering internal pressure,namely,the change of effective stress,is discussed in this paper to study the effect of the reservoir permeability caused by the alternation of the internal pressure,and to analyze the stress sensibility of permeability at the same time.Based on the results of the experiment,the numerical simulation software Eclipse is utilized to study the different means of production about a low permeability gas well in Sulige gas field.A comparison between the continuous production and the intermittent production will demonstrate the impact brought by the stress sensibility on low permeability gas reservoir.And the reasonable means of production is brought forward in order to provide the reference for the exploitation of low permeability gas reservoir.
出处
《断块油气田》
CAS
2007年第2期53-55,共3页
Fault-Block Oil & Gas Field
关键词
应力敏感
有效应力
低渗气藏
连续式生产
间歇式生产
数值模拟
stress sensibility,effective stress,low permeability gas reservoir,continuous production,intermittent production,numerical simulation.
