超稠油油藏中直井与水平井组合SAGD技术优化地质设计  

Optimization of geological design for SAGD process in super heavy oil reservoirs using a combination of vertical and horizontal wells

作　　者：孟巍[1,2] 贾东[1] 谢锦男[2] 汪国文[2] 李平[2] 贾振歧（审稿） 

机构地区：[1]南京大学地球科学系,江苏南京210005 [2]中国石油辽河油田公司勘探开发研究院,辽宁盘锦124010 [3]不详

出　　处：《大庆石油学院学报》2006年第2期44-47,147,共4页Journal of Daqing Petroleum Institute

摘　　要：为提高D84块XLT超稠油油藏剩余油动用程度,以油藏特点和开发现状为基础,应用STARTS数值模拟软件,采用变深度、不均匀网格进行油藏数值模拟.提出了直井与水平井组合的SAGD(Steam-AssistedGravityDrain-age)技术,并对布井方式、水平段长度、水平段在油层中的位置、注采参数等进行了优化设计.实施效果表明,各项参数的设计科学合理;采用直井与水平井组合SAGD技术,提高超稠油原油采收率是经济可行的.Based on the detailed studies of the characteristics of reservoir and the present cyclic steam injection situation, by using STARTS numerical simulation model and adopting various depth and heterogeneous grid, we researchers put forward a new technology which makes use of vertical wells combined with horizontal wells, named SAGD (Steam-Assisted Gravity Drainage) to improve the exploitation of residual oil in XLT reservoir of D84 block whose oil is super heavy. Meanwhile, we optimize some main geological parameters for geological design of SAGD process, such as well pattern,length of horizontal interval,location of horizontal interval and injection-production parameters. The field-work shows that the designed parameters are reasonable and the SAGD technology which uses vertical wells combined with horizontal well is economical and feasible.

关 键 词：超稠油油藏 SAGD 布井方式 数值模拟 注汽干度 注汽速度 

分 类 号：TE345[石油与天然气工程—油气田开发工程]