稠油油藏多元热流体驱提高采收率研究  

Enhanced recovery study of multi-component thermal fluid flood for heavy oil reservoir

作　　者：祁成祥 杨兵[2] 李敬松[2] 冯祥[2] 郑伟 

机构地区：[1]中海石油国际有限公司,北京100010 [2]中海油田服务股份有限公司,天津300450 [3]中海油研究总院,北京100027

出　　处：《油气藏评价与开发》2015年第1期44-48,共5页Petroleum Reservoir Evaluation and Development

基　　金：国家科技重大专项"大型油气田及煤层气开发"--海上稠油热采新技术(2011ZX05024)

摘　　要：稠油油藏多元热流体吞吐后期受地层压力下降、边水突进等影响,周期产量递减快,继续吞吐开采提高采收率幅度有限。为研究多元热流体吞吐后期进一步提高采收率的有效开发方式,针对多元热流体的主要组成(蒸汽、氮气、二氧化碳),系统分析了多元热流体驱油机理,以我国渤海N油田为对象原型,通过数值模拟分析了多元热流体驱油藏适应性,优化了多元热流体驱工艺参数。结果表明,多元热流体驱替开发可在吞吐开发基础上提高采出程度14.13%,对同类稠油油藏大幅度提高采收率具有指导意义。On the later stage of MCTF huff and puff, the cycle production of heavy oil reservoir declines quickly due to pressure dropping, water fingering, etc. The improvement of oil recovery is limited. To find the effective method that could improve the oil recovery after MCTF huff and puff, the mechanism of MCTF flood was fully analyzed according to the main components of MCTF（steam, nitrogen, carbon dioxide）. Besides, taking N oil field in Bohai Bay as an example, and through numerical simulation study,the reservoir compatibility for MCTF displacement was analyzed and the parameters were optimized. Result shows that oil recovery can be improved by 14.13 % through MCTF displacement compared with MCTF huff and puff, which is helpful to improve the recovery of similar heavy oil reservoirs.

关 键 词：稠油 多元热流体驱 适应性 提高采收率 参数优化 

分 类 号：TE53[石油与天然气工程—油气田开发工程]