XJ油田低压低产气井有效分类方法  

An Effective Classification Method for I ow-Pressure and Low-Production Gas Wells in XJ Oilfield

作　　者：池明[1] 马文敏 郭玲 辛晓知 廖锐全[3] 高涵[1] 杜军军 王修武 CHI Ming;MA Wenmin;GUO Ling;XIN Xiaozhi;LIAO Ruiquan;GAO Han;DU Junjun;WANG Xiuwu(Engineering Technology Rescarch Institute of PetroChina Xinjiang Oifield Company,Karamay,Xinjiang 834000,China;Faculy of Chemical Engineering,Kunming Univerity of Science and Technology,Kunming 650500,China;School of Petroleum Engineering,Yangtze University,Wuhan 430000,China)

机构地区：[1]中国石油新疆油田公司工程技术研究院,新疆克拉玛依834000 [2]昆明理工大学化学工程学院,云南昆明650500 [3]长江大学石油工程学院,湖北武汉430000

出　　处：《昆明理工大学学报（自然科学版）》2023年第2期55-63,共9页Journal of Kunming University of Science and Technology(Natural Science)

基　　金：国家自然科学基金项目(62173049);云南省科技厅青年基金项目(KKSQ202005031)。

摘　　要：XJ油田气藏储层物性差、非均质性强,气井总体采出程度低且差异大,为了对不同类型的低产气井实施针对性的稳产增产措施从而提高采收率,亟需构建气井有效分类方法及实现气井有效分类.常规动静结合的气井分类方法考虑因素单一、分类结果准确度低,为此,本文基于动静结合的气井初步分类,利用灰色关联法开展了XJ油田气井产能的多因素分析,依据气井实际生产数据建立了新的气井分类标准,实现了适合于XJ油田气井的有效分类.研究表明:气井日产气量受多种因素综合影响,采用动静结合的方法分类不够详细;进一步进行气井产能的多因素权重分析,发现产水是造成XJ油田气井低产的主导因素;创建二级分类方法进行气井有效分类,在掌握了气井生产特征基础上,构建了低产气井有效措施优选流程.建立的气井分类评价方法准确性好,可为其他气藏气井分类以及稳产增产规划提供一定参考依据.Gas reservoirs in the XJ Oilfeld have poor physical properties and strong heterogeneity,resulting in low overall recovery rates and significant variations among gas wells.To improve the recovery rate by implementing targeted stabilization and production enhancement measures for different types of low-production gas wells,it is urgently necessary to establish an effective gas well classification method and achieve effective gas well classification.Conventional gas well classification methods,which combine dynamic and static factors,have a single consid-eration and low accuracy in classification results.Therefore,this paper conducts a multi-factor analysis of gas well productivity in the XJ Oilfield based on the preliminary classification of gas wells by using the dynamic-static combined method and grey rel ational analysis.A new gas well classification standard is established based on the actual production data,achieving effective classification suitable for gas wells in the XJ Oilfield.The study shows that daily gas production is influenced by multiple factors,and the classification using dynamic-static combined methods is not detailed enough.Further multi-factor weight analysis of gas well productivity reveals that water production is the leading factor causing low production in XJ Oilfield gas wells.A secondary classifica-tion method is created to effectively classify gas wells,and an optimization process for effective measures is developed for low-production gas wells based on the understanding of their production characteristics.The established gas well classification evaluation method has good accumcy and can provide a reference for the classification of gas wells in other gas reservoirs and planning of production stabilization and enhancement measures.

关 键 词：气井分类 灰色关联分析 产水特征 工艺措施 

分 类 号：TE37[石油与天然气工程—油气田开发工程]