稠油油藏热采水平井均衡采油新方法  

A novel method for balanced production of horizontal wells for thermal recovery in heavy oil reservoirs

作　　者：黄亮[1] 石军太[1] 李彦尊[1] 臧加利 张富旭 孙政 

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

出　　处：《油气地质与采收率》2016年第2期115-120,共6页Petroleum Geology and Recovery Efficiency

基　　金：国家自然科学基金委联合项目"煤层气在基质孔隙中解吸传递机理及产能预测"(U1262113);国家自然科学基金委重大项目"页岩油气多尺度渗流特征与开采理论"(51490654);中国石油大学(北京)科研基金项目"煤层气藏开发扩散渗流机理及产气规律研究"(YJRC-2013-37)

摘　　要：热采水平井技术在稠油油藏开发中已得到广泛应用,但由于储层的非均质性,导致水平段流量剖面不均匀,影响了稠油油藏热采水平井的开发效果。为此,提出了采用中心管变密度打孔以实现稠油油藏热采水平井均衡采油的新方法。通过对实际储层渗流压降、泄油孔节流压降、中心管管流压降进行耦合,建立了稠油油藏热采水平井均衡采油数学模型,确定了模型的求解方法,并结合实例进行了优化设计。结果表明,通过优化热采水平井中心管泄油孔密度分布,可有效调节水平段流量剖面,从而实现热采水平井的均衡采油,改善稠油油藏储量动用程度。Technology of horizontal well for thermal recovery has been widely applied in heavy oil reservoirs. However,heterogeneity of the reservoirs results in the problem of uneven inflow distribution along the horizontal wellbore,which has influence on the development effect of the horizontal well for thermal recovery in the heavy oil reservoir. So a novel method for balanced production was put forward through variable-density hole in central tube. Based on pressure drop analysis of actual reservoir flow,throttle of drainage hole and pipe flow of the central tube,a mathematical model of the balanced production of horizontal well for thermal recovery in the heavy oil reservoir was built and its solution method was determined.Optimization design was made combined with a case. The results show that the inflow profile of horizontal section can be regulated effectively by optimizing the hole density distribution in the central tube,thus balanced production of the horizontal well for thermal recovery may be realized and the producing degree of reserves in the heavy oil reservoir will be improved.

关 键 词：稠油油藏 热采水平井 中心管完井 泄油孔密度优化 均衡采油 

分 类 号：TE345[石油与天然气工程—油气田开发工程]