改善稠油油藏蒸汽吞吐后期开发效果研究.doc

专业专心专注专业资料参考首选摘要稠油由于粘度高和流动性差,用常规方法很难开采。国内外自 50 年代投入开发以来,历经 60年的开发,已经形成了以热动力为主的各种开发方式,其中蒸汽吞吐是使用范围最广泛的开发手段。但是稠油油藏经过长期蒸汽吞吐开发后,区块产量下降迅速,经济效益明显变差,使得改善开发效果技术研究成为目前急待解决的攻关课题。本文在蒸汽吞吐采油机理研究的基础上,通过对辽河油田锦 45 块这个典型的稠油油藏的开发现状、特点和规律的再认识,运用沉积相理论、油藏数值模拟理论、测井解释技术及动态监测等技术,开展了剩余油分布规律研究, 系统的提出了改善开发效果的技术对策,并完成蒸汽吞吐油田开发阶段采收率的预测。该技术研究为我国各类稠油油藏的蒸汽吞吐开发提供了较好的技术支持和借鉴,可指导蒸汽吞吐油藏的实际开发。关键词:稠油;蒸汽吞吐;剩余油;采收率专业专心专注专业资料参考首选 Abstract Heavy oil is very difficult tobe produced by conventional technology because of its high viscosity and poor flow ability. From the beginning of viscous crude development in 1950's, many forms of development means mainly based on thermal dynamics have been set up. And the steam stimulation covers most deve lop ing conditions. However, after a long time of development, the yield in the block declines rapidly and economic efficiency obviously es poor, so it is necessary to work on improving exploitation effects of heavy oil reservoir. Based on steam stimulation oil recovery mechanism, through analyzing the developing status, characteristics and princip l esof three typical heavy oil reser v oirs of Jin 45 Block in Liaohe oilfield, combining with sedimentary fac i es theory, numerical rese r voir simulation theory, log interpretation and dynamic monitoring, this dissertation researches the distribution law of remaining oil, gives a systemic method improving exploitation effects, puts forward a theory forecasting oil-recovery, which can help to exploit the steam stimulation reservoirs. Key words: H eavy oil ; S team stimulation ; R emaining oil ; O il-recovery 专业专心专注专业资料参考首选目录第1章概述................................................................................................................... 1 研究的目的和意义................................................................................................. 1 国内外研究现状..................................................................................................... 1 研究方法及内容.................................................