稠油油藏蒸汽吞吐后转驱方式优选及注采参数优化  

Optimization of conversion scheme and parameters of injection&production after steam stimulation in heavy oil reservoirs

作　　者：王长久[1] 刘慧卿[1] 郑强[1] 

机构地区：[1]石油工程教育部重点实验室中国石油大学,北京102249

出　　处：《特种油气藏》2013年第3期72-75,154,共4页Special Oil & Gas Reservoirs

基　　金：国家科技重大专项"蒸汽驱后稠油油藏提高采收率技术研究"(2011ZX05009-004-05)

摘　　要：胜利油田单10块馆陶2+3组目前处于高轮次蒸汽吞吐后期,生产井高含水,蒸汽吞吐效果变差。根据研究区块的地质特点,设计了热水驱、热水泡沫驱、蒸汽驱、蒸汽泡沫驱4种转驱方式,通过室内物理模拟实验对转驱方式进行优化;运用油藏数值模拟软件建立了数值模型,对采用优选转驱方式井组的注采参数进行了优化,结果表明蒸汽+N2泡沫驱的效果最佳,最终采收率可达到49.87%。对研究区块下一步转驱及稳产具有指导意义,对同类油藏转换开发方式提供了理论依据。Currently Ng2+3 formation of Block Shan 10 in Shengli Oilfield has undergone multi-cycle steam stimulation,therefore water cut in producing wells is high and steam simulation efficiency is poor.4 types of conversion scheme,namely,hot water flooding,hot water foam flooding,steam flooding and the 4 types of conversion scheme are optimized through physical simulation in lab;numerical models are established by using reservoir numerical simulation software and the injection & production parameters for the optimized well groups converted to flooding are optimized.The results show that the effectiveness of steam flooding with nitrogen foam is the best and its ultimate recovery will reach 49.87%.The study is significant to the study on next conversion to flooding and stable production and provides reference to the conversion of development scheme of similar reservoirs.

关 键 词：稠油油藏 转换开发方式 物理模拟 数值模拟 蒸汽驱 单10块 

分 类 号：TE345[石油与天然气工程—油气田开发工程]