多层疏松砂岩气田气井合理配产  

RATIONAL PRODUCTION PRORATION OF GAS WELLS IN MULTI-LAYERED UNCONSOLIDATED SANDSTONE GAS RESERVOIR

作　　者：吴国云[1] 单高军[2] 钟海全[2] 

机构地区：[1]重庆科技学院石油工程学院,重庆410023 [2]西南石油大学,四川成都610500

出　　处：《大庆石油地质与开发》2009年第6期143-145,共3页Petroleum Geology & Oilfield Development in Daqing

基　　金：基金项目：高等学校博士学科点专项科研基金项目（NO.20060615002）资助.

摘　　要：多层疏松砂岩气田储层岩性疏松，气水层交互，边水环绕。若配产不合理，将导致气井大量出水出砂，仅仅考虑气井无阻流量的单因素配产方法已经不能满足需要。根据系统试井产能分析、生产数据动态分析、单井控制储量和临界出砂状态的计算，结合最小携液产量和最大冲蚀产量的计算，考虑采气速度均衡、压降均衡、出砂安全、携液安全进行多因素配产方案研究，并运用气藏数值模拟技术，结合水侵动态和稳产年限对气井配产方案进行调整，建立了一套针对该类型气田的科学合理的气井配产模式。模拟结果表明：实例数值模拟调整后气井产水得到有效控制，气田稳产年限达到13 a以上。Multi-layered unconsolidated sandstone gas reservoir is featured by unconsolidated lithology, interbeded gas-water zones and active edge water. Irrational production proration will lead to water breakthrough and sand in- flow in gas wells; single-factor production proration method that only considers the gas well absolute open flow （AOF） is already incompetent in solving problems nowadays. Based on multipoint well test deliverability analysis, production data dynamic analysis, single well controlled reserves and critical situation of sand inflow calculation, and combining the calculation of minimum liquid hold-up gas rate and maximum erosion gas rate, meanwhile con- sidering balanced gas recovery factor, balanced pressure drop, safe sand inflow and safe liquid hold-up, the multi- factor production proration plan has been set up, which is improved and adjusted by integrating water influx per- formance and years of stable production, through gas reservoir numerical simulation. A scientific and rational pro- duction proration pattern particularly for this type of gas reservoir has been determined. The reservoir simulation re- sults of case study show that the water production in gas wells can be controlled and the gas reservoir sustained sta- ble production can last more than 13 year.

关 键 词：防砂 控水 多因素配产 数值模拟 

分 类 号：TE375[石油与天然气工程—油气田开发工程]