边水气藏气井见水时间预测方法  

Prediction of water breakthrough time in gas reservoirs with edge water

作　　者：王会强[1] 李晓平[2] 吴锋[3] 何司平[1] 

机构地区：[1]中油西南油气田分公司,四川成都610051 [2]油气藏地质及开发工程国家重点实验室西南石油大学,四川成都610500 [3]油气藏地质及开发工程国家重点实验室 西南石油大学,四川成都610500

出　　处：《特种油气藏》2008年第4期73-74,93,共3页Special Oil & Gas Reservoirs

基　　金："油气藏地质及开发工程"国家重点实验室基金项目(PLN0135)资助

摘　　要：基于多孔介质流体质点的渗流规律,对具有近似直线供给边界的边水气藏见水时间的预测方法进行研究。通过数学推导,得到了边水气藏水舌突破时间的计算公式。该公式考虑了气水流度比、原始束缚水饱和度、残余气饱和度、气井距边水的距离等影响因素,并进行了实例分析。结果表明,利用该公式进行边水气藏气井见水时间预测是可行的,具有一定的实用性。Based on the theory of mass point percolation flow through porous media,water breakthrough time is pre- dicted for gas reservoirs with approximately straight line feeding edge water.A formula to determine water break- through time of gas reservoirs with edge water is derived through mathematical development.The formula considers the influential factors such as gas/water mobility ratio,initial irreducible water saturation,residual gas saturation,and the distance between gas well and edge water.Moreover,case analysis has been conducted.The result shows that this for- mula is feasible and practical for predicting water breakthrough time in gas reservoirs with edge water.

关 键 词：边水气藏 气井见水 水舌 突破时间 预测方法 

分 类 号：TE33[石油与天然气工程—油气田开发工程]