边水稠油油藏水平井产能影响因素敏感性分析  

Horizontal Well Productivity Sensitivity Analysis in Heavy Oil Reservoir with Edge Water

作　　者：顾文欢[1] 刘月田[1] 

机构地区：[1]石油工程教育部重点实验室(中国石油大学),北京昌平102249

出　　处：《石油钻探技术》2011年第1期89-93,共5页Petroleum Drilling Techniques

基　　金：国家科技重大专项大型油气田及煤层气开发项目"复杂油气田地质与提高采收率技术"(编号:2009ZX05009)部分研究内容

摘　　要：结合锦612边水稠油油藏地质特征及开发特点,利用油藏工程方法和油藏数值模拟技术,分析了影响边水稠油油藏水平井产能的因素及影响规律和水平井产能对各影响因素的敏感程度。结果表明:水平井到边水的距离对水平井产能的影响程度最大;水平井到边水的距离过小,边水极易突破到井底,水平井产能受到严重影响;水平井到边水的距离过大,无法充分利用边水能量,地层压力下降较快,水平井产能也受到一定影响;保证水平井到边水的距离合理,水平井产能将达到最大。水平井产能对其他影响因素的敏感程度依次为:地层倾角、油层厚度、原油黏度、水平段长度、水平渗透率、水体能量。针对某一特定边水稠油油藏,应以合理选择水平井到边水的距离为重点,确定水平井到边水的距离与其他参数的最优配置关系,方可获得最优的开发效果。Combined with geological and development characteristics of Jin 612 heavy oil reservoir with edge water,the impacting factors on horizontal well productivity and the sensitivity to impacting factors were analyzed using reservoir engineering method and reservoir numerical simulation. The results show that the most important impacting factor is the distance between horizontal well and edge water. If the horizontal well and edge water is too close, the edge water will easily break through to the bottom of well which would seriously affect the well productivity. However, the large horizontal distance to the water edge makes it hard to take full advantage of the energy from edge water,and the well productivity is impacted. A reasonable distance between horizontal well and edge water can maximize the productivity. Other impacting parameters on productivity of horizontal wells are formation dip, formation thickness, oil viscosity, horizontal section length, horizontal permeability and the energy of edge water. For a particular heavy oil reservoir, the reasonable distance between horizontal well and edge water should be focused, the optimized development results can be obtained by determining the optimized relationship between the distance from horizontal well to edge water and other parameters.

关 键 词：边水油藏 稠油油藏 水平井 生产能力 

分 类 号：TE345[石油与天然气工程—油气田开发工程]