洼38块特稠油蒸汽驱配套技术及外扩方案研究

发布时间：2018-05-10 18:44

本文选题：洼38块 + 蒸汽驱　；参考：《东北石油大学》2015年硕士论文

【摘要】：洼38块其构造上位于辽河断陷中央凸起的南部倾没带的北端,该片区块主要开发目的层属于古近系东营组三段油层。目前采用蒸汽驱开采方式,己进入到开发中后期,存在主要问题是:地层能量严重不足,蒸汽驱吞吐开发指标变差。为了进一步提高小洼油田采收率,借鉴国内外蒸汽驱成功经验,开展洼38块蒸汽驱配套技术及外扩方案研究。本文综合运用油藏工程,动态分析、分析对比等方法,针对该区块开发中存在的主要矛盾,开展蒸汽驱外扩可行性研究。在洼38块东三段油藏精细地质研究基础上,进行了蒸汽驱先导效果评价,开展了蒸汽驱外扩试验,在水平井开采、蒸汽驱提高采收率、改善稠油蒸汽的吞吐效果、注汽系统的燃料结构调整等方面进行研究,以提高油藏采收率、提高单井产量、提高开发效果、降低操作成本为重点进行研究,以加强现场监督和规范管理为手段,尝试解决制约油田开发中的瓶颈技术问题。文中着重对蒸汽驱吞吐引效、高温人工井壁防砂、高效举升、蒸汽驱作业等相关蒸汽驱配套技术进行研究,提出了实施高干度注汽、优化注汽参数、回字型井网、停注控压、高温调堵、强化提液等综合调控技术,保证蒸汽驱效果,推进外扩方案的研究实施。通过本文对蒸汽驱配套技术的研究表明回字型井网能较好解决深层反九点井网存在的热损失大,采注比低,地层压力上涨,蒸汽驱难以扩展等问题。
[Abstract]:Block WA 38 is structurally located at the northern end of the southern dip belt of the central uplift of Liaohe fault depression. The main development target layer of this block is the third member of the Dongying formation of Paleogene. At present, steam drive production has entered the middle and late stage of development. The main problems are that the formation energy is seriously insufficient and the development index of steam drive huff and puff becomes worse. In order to further improve the oil recovery of Xiaowa Oilfield and draw lessons from the successful experience of steam flooding at home and abroad, the matching technology and extension scheme of steam flooding in block WA 38 were studied. In this paper, reservoir engineering, dynamic analysis, analysis and comparison are used to study the feasibility of steam drive expansion in view of the main contradiction existing in the development of the block. On the basis of fine geological study of the third member reservoir in block WA 38, the pilot effect of steam drive was evaluated, and the expansion test of steam drive was carried out. In horizontal well production, steam flooding improved oil recovery and steam huff and puff effect of heavy oil. The fuel structure adjustment of steam injection system is studied in order to improve oil recovery, increase single well production, improve development effect, reduce operation cost, and strengthen field supervision and standard management. This paper tries to solve the bottleneck technical problem in oilfield development. In this paper, the relevant steam drive matching technologies, such as steam drive huff and puff efficiency, high temperature artificial wall sand control, high efficiency lifting, steam drive operation and so on, are studied, and the implementation of high dryness steam injection, optimization of steam injection parameters, annular well pattern, stop injection and control pressure are put forward. In order to ensure the effect of steam drive and promote the research and implementation of extraneous expansion scheme, comprehensive control techniques such as high temperature plugging control and liquid extraction are strengthened. Through the research on the matching technology of steam flooding, it is shown that the well pattern can solve the problems such as large heat loss, low injection ratio, rising formation pressure and difficult expansion of steam flooding.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE357.44

【参考文献】