扶余油田深入地质认识及水驱影响因素研究

发布时间：2018-05-31 05:01

本文选题：地质认识 + 水驱　；参考：《东北石油大学》2015年硕士论文

【摘要】：扶余油田位于松辽盆地中央拗陷带,是一个轴向不明显的受断裂控制的穹隆背斜。断层多、高点多、油藏埋藏浅、油层多而薄是其主要特点:扶余油层及杨大城子油层物性差异大、油层纵向上非均质严重,横向上岩性变化大,导致随着开发时间的不断延长,油田开发难度日益增大。扶余油田经过以“三重”为核心的老油田二次开发工作,连续四年实现100万吨稳产,但目前综合含水已经达到94.1%,进入到特高含水开发阶段,无效水循环严重,自然递减居高不下,油田稳产面临严重挑战。面对此种状况,扶余油田近年在技术和管理方面做了大量的工作,尤其是在做好分注的前提下逐步扩大调剖规模,2011年已经达到447口,但仍未从根本上改变含水上升加快、自然递减大的趋势,采收率的进一步提高也受到了制约。在特高含水开发阶段实现“含水基本不升,产量基本不降”的目标,需要在地质精细认识基础上进一步深入分析影响水驱因素,制定合理的精细水驱技术对策。本文在深入地质认识的基础上,应用单砂体、隔夹层等油藏新成果结合油藏监测资料和历史动态分析成果研究水驱影响因素。综合分析了扶余水驱的特点和存在问题以及影响因素,并提出了提高扶余水驱开发效果的具体对策和建议,以指导下阶段扩大规模实施,减少不必要技术弯路。
[Abstract]:Fuyu oil field is located in the central depression zone of Songliao Basin and is an unobvious fault controlled dome anticline. The main characteristics of the reservoir are more faults, more high points, shallow buried reservoirs, and more and thinner reservoirs: the physical properties of Fuyu oil layer and Yangdachengzi reservoir are large, the vertical heterogeneity of reservoir is serious, and the lateral lithology changes greatly, which leads to the continuous extension of development time. The difficulty of oilfield development is increasing day by day. Through the secondary development of the old oilfield with "triple" as the core, Fuyu Oilfield has achieved 1 million tons of stable production for four consecutive years, but at present the comprehensive water cut has reached 94.1 and has entered the stage of super high water cut development. The ineffective water circulation is serious. Natural decline remains high, and stable production of oil fields is facing serious challenges. Faced with this situation, Fuyu Oilfield has done a great deal of work in technology and management in recent years, especially in expanding the scale of profile control gradually on the premise of good injection separation. It has reached 447 in 2011, but it has not fundamentally changed the water cut and accelerated the rise of water cut. The further improvement of oil recovery is restricted by the trend of natural decline. In order to realize the goal of "no increase in water cut and no decrease in output" in the development stage of super high water cut, it is necessary to further analyze the factors affecting water drive on the basis of geological fine understanding, and to formulate reasonable technical countermeasures of fine water flooding. On the basis of deep geological understanding, this paper studies the influencing factors of water flooding by using new achievements of single sand body and intercalation reservoir combined with reservoir monitoring data and historical dynamic analysis results. The characteristics, existing problems and influencing factors of Fuyu water drive are comprehensively analyzed, and the concrete countermeasures and suggestions to improve the development effect of Fuyu water drive are put forward to guide the implementation of scale expansion in the next stage and to reduce the unnecessary technical detours.
【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】：TE357.6

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