摘要
苏里格气田是一个地质条件非常复杂的低压、低渗透、低丰度岩性气藏,单井产量低,地层压力下降快。为延长低渗气井的稳产时间,提高累计采出量和最终采收率,需要对气井进行分类管理、配产。原有的储层静态物性和气井无阻流量分类法只考虑了气井产能的一个方面,生产过程中发现多口井与其同类井的生产特征不一致,需要重新划分井型。把地层系数、试气无阻流量等参数,采用模糊数学方法处理成一个综合分类因子,既考虑静态资料又考虑动态特征,对井区各井进行了重新分类并根据分类给出了各类井配产图。生产实践表明,综合分类法能够准确地根据产能对气井进行分类,对应的配产图有利于苏里格低渗气井的配产和管理。
Sulige is a very complex gas field with low pres-sure,low permeability and low abundance.The tight gas reservoir has presented a number of challenges in successful development such as low outcome and sharply dropping pressure.In order to obtain a higher recovery ratio and longer production plateau,the gas wells should be classified and allocated.The primary classifi-cation method of static reservoir physical property and open - flow capacity of gas well only considered the one side of the gas well off- take potential.In field practice,many wells perform differently against the others of the same type.So,all wells should be reclas-sified.Flow capacity and absolute open flow were treated to be a comprehensive classification factor with fuzzy mathematics method and wells in the field were reclassified based on it and allocating maps were given.Filed production showed that the comprehensiveclassification method could distinguish low - permeability gas wells properly and corresponding allocation chart was propitious to prora-tion and management of low permeability gas wells.
出处
《钻采工艺》
CAS
北大核心
2008年第5期59-61,共3页
Drilling & Production Technology
基金
国家自然科学基金项目“油气储层损害的信息融合理论与方法研究”(编号:Z02047)
中国石油集团公司项目“苏里格低压低渗气藏保护技术研究”(编号:Z03014)
关键词
低渗气田
井型
地层系数
无阻流量
模糊数学
low permeability gas field,well type,formation flow capacity,open-flow capacity,fuzzy mathematics
