Y929-969井区下古气藏试井曲线及其生产特征分析  

Analysis of well test curves and production characteristics of lower Paleozoic reservoir in Y929-969 wellblock

作　　者：刘洋洋 刘二虎 尹晏彬 高利军 LIU Yangyang;LIU Erhu;YIN Yanbin;GAO Lijun(Yanchang Petroleum Group Exploration Company,Yan’an,Shaanxi 716000,China)

机构地区：[1]陕西延长石油集团油气勘探公司,陕西延安716000

出　　处：《油气井测试》2023年第2期73-78,共6页Well Testing

基　　金：延长石油集团油气勘探公司重大科技项目“靖边区域下古气藏试井技术研究与应用”(ycsy2020ky-C-18)

摘　　要：靖边区域Y929-969井区下古生界储层致密,流体性质和流动机理复杂,试井曲线复杂性及多解性明显,亟待研究解决其试井曲线及生产特征。利用渗流力学理论,结合井区下古地质研究基础及试井测试情况,综合考虑全区下古气藏连通性、储层物性、流体性质等静态数据,采用现代试井分析与生产动态分析相结合的方法,通过Saphir软件研究储层类型以指导生产实际。结果显示,井区下古储层主要表现为均质、双重介质、具有压裂裂缝的均质、复合储层以及带有不渗透边界5种曲线特征。该研究结果可为井区后期试井解释提供理论指导,为具有类似试井曲线特征的气井选择合理工作制度提供参考依据。The lower Paleozoic reservoir in Y929-969 in Jingbian area is dense,with complex fluid properties and flow mechanism,furthermore complex well test curve and obvious multi-solution,so it is urgent to study and solve its well test curve and production characteristics.Using the theory of percolation mechanics,combining wellblock ancient geological research foundation and well test data under test conditions,comprehensive consideration of the ancient gas reservoir connectivity,reservoir physical properties,fluid properties,such as static data,Uses the modern well test analysis and dynamic analysis method of combining the production,reservoir types through Saphir Obama software research to guide the production practice.The result shows that wellblock performance for homogeneous reservoir,dual porosity media,fracturing fracture homogeneous,compound,with impermeable boundary curve characteristics.The research results can provide theoretical guidance for later well test interpretation and provide reference for selecting reasonable working system for gas wells with similar well test curves.

关 键 词：靖边气田 试井曲线 生产动态 特征分析 均质地层 双重介质 压裂裂缝 复合地层 不渗透边界 

分 类 号：TE353[石油与天然气工程—油气田开发工程]