利用蒸汽超覆作用提高注蒸汽开发效果  

Improving steam injection performance using steam overlap

作　　者：高永荣[1] 闫存章[2] 刘尚奇[1] 鲍君刚[3] 韩静[1] 

机构地区：[1]中国石油勘探开发研究院热采所,北京100083 [2]中国石油天然气股份有限公司对外合作经理部,北京100011 [3]中国石油辽河油田分公司,辽宁盘锦124010

出　　处：《石油学报》2007年第4期91-94,共4页Acta Petrolei Sinica

基　　金：中国石油天然气集团公司"十五"科技项目(040502-08)"稠油油藏高轮次蒸汽吞吐后转换开采方式对策研究"部分成果

摘　　要：利用解析解方法及数值模拟方法,对辽河油田洼38块特稠油油藏注蒸汽开发的热能分布进行了分析,并对有效利用蒸汽及提高注热效果进行了研究。优选出了合理的注采井段,确定了蒸汽的注入方式。综合分析表明,连续注蒸汽的开采方式适合该油藏,下注上采的线性驱动开采方式可以有效地利用蒸汽超覆作用,提高蒸汽的波及体积,进而提高多轮次吞吐阶段油藏的采收率。The distribution of heat in extra-heavy oil reservoir after steam injection in Block Wa-38 of Liaohe Oilfield was analyzed by analytical method and numerical models. The available methods for effectively utilizing steam and enhancing the performance of steam injection were studied. The reasonable intervals for steam injection and oil production were optimized, and the steam injection mode was determined. The comprehensive analysis shows that the continuous steam injection is suitable to this reservoir. The injection manner of line-drive in the way of down-dip steam injection and up-dip production can effectively utilize steam overlap and improve the steam swept volumes. This is an efficient approach for further increasing recovery of cyclic steam stimulation in the late stage of cyclic steam injection.

关 键 词：辽河油田 稠油油藏 蒸汽吞吐 蒸汽驱 蒸汽超覆作用 波及体积 提高原油采收率 

分 类 号：TE345[石油与天然气工程—油气田开发工程]