延长油田CO2非混相驱地质封存潜力初步评价  

Preliminary evaluation of CO_2-EOR geological sequestration potential for Yanchang Oilfield

作　　者：梁凯强 王宏 杨红 王维波 陈龙龙 石小雷[2] 

机构地区：[1]陕西延长石油(集团)有限责任公司研究院,陕西西安710075 [2]陕西学前师范学院,陕西西安710061

出　　处：《断块油气田》2018年第1期89-92,共4页Fault-Block Oil & Gas Field

基　　金：“十二五”国家科技支撑项目课题“CO2地质封存与驱油安全监测技术研究”(2012BAC26B05)

摘　　要：针对CO_2驱油项目地质封存潜力评价难度大的问题,选取了一种适合延长油田低渗透油藏CO_2驱油与封存的潜力评价模型,从延长油田176个油藏中筛选出87个适合CO_2非混相驱的油藏,运用模型对靖边及吴起2个CO_2驱油先导试验区的地质封存量及封存潜力进行了评价,全面掌握了延长油田开展CO_2非混相驱油的地质封存潜力,为CO_2驱油与封存试验区的选择提供了决策参考。经统计与计算,2个先导试验区已累计注入并动态封存CO_2约9.4×104t,87个适合CO_2非混相驱油藏的理论地质封存量约为6×108t,有效地质封存潜力可达4×108 t。Considering the difficulty to evaluate the potential of CO_2 geological sequestration for CO_2-EOR project, a CO_2 sequestration potential evaluation model for low permeability reservoirs of Yanchang Oilfield was chosen, and 87 reservoirs suitable for CO_2 immiscible flooding were selected from 176 reservoirs. The sequestered amount of CO_2 in Jingbian and Wuqi pilot test areas were calculated, which provides theoretical support for CO_2-EOR and sequestration pilot area screening. Through the statistics and calculation, the accumulated injection and dynamic CO_2 sequestration is about 94 000 tons in those two pilot test areas, CO_2 theoretical sequestration potential of 87 reservoirs suitable for CO_2 immiscible flooding is about 600 million tons, effective sequestration potential is up to 400 million tons.

关 键 词：CO2驱油 评价模型 封存潜力 延长油田 

分 类 号：TE341[石油与天然气工程—油气田开发工程]