XX油田剩余油分布及挖潜技术研究

发布时间：2018-12-13 05:52

【摘要】：XX油田长期依靠天然能量开采,随着注水开发时间的延长,该油田进入中高含水期,地层压力逐渐下降、产量递减较快,同时由于葡萄花和高台子两套油层储层物性差异及葡萄花油层边水推进的影响,导致该油田含水上升幅度大。油田在注水开发过程中,受注入水和边水的双重作用,原注水井网不完善,地下油气水分布逐渐复杂化,剩余储量动用难度增大,导致该油田挖潜难度越来越大,严重影响了油田开发效果。本文主要从以下四个方面开展研究:1)剩余油分布状况研究;2)注采井网适应性研究;3)边水能量研究;4)油气平衡开采试验研究。利用动态分析法、数值模拟法、沉积相法、动态监测法等国内外成熟的剩余油研究方法,进行XX油田剩余油分布规律研究。通过所认识的剩余油分布规律,再结合油田注水开发实际指导挖潜剩余油。针对目前注采井网存在的问题,利用动态监测及数值模拟等技术进行注采井网适应性研究,编制调整方案,增加水驱控制程度,提高采收率;针对油田受边水推进含水上升快的问题,应用油藏工程方法和数值模拟法,开展边水能量研究,通过加强抽汲参数调整、加强合理套压控制、加强堵水工作等技术手段,抑制边水推进,有效控制含水上升;针对油田油气水分布复杂的实际,进行油气平衡开采现场试验研究,结合数值模拟技术,进一步摸索油气平衡开采方法。本文以XX油田为研究对象,开展剩余油分布状况分析与储层潜力模拟分析,并进行配套挖潜措施综合研究,从而形成XX油田综合挖潜的新模式,对其它类似油藏的后期开发有一定的指导意义。
[Abstract]:XX oilfield relies on natural energy for a long time. With the extension of water injection development time, the oil field enters the middle and high water cut period, the formation pressure decreases gradually, and the production decreases rapidly. At the same time, because of the difference of reservoir physical properties between Gaotaizi and Gaotaozi reservoirs and the influence of the edge water propulsive of the Putaohua reservoir, the water cut of this oil field rises greatly. In the process of water injection development, due to the dual action of injection water and edge water, the original injection well network is not perfect, the distribution of underground oil, gas and water is becoming more and more complicated, and the production of remaining reserves is becoming more and more difficult, which leads to the increasing difficulty of tapping potential in the oilfield. The effect of oilfield development is seriously affected. In this paper, the following four aspects are studied: 1) the distribution of remaining oil; 2) the adaptability of injection-production pattern; 3) the energy of edge water; 4) the experimental study of oil and gas balanced production. Using dynamic analysis method, numerical simulation method, sedimentary facies method, dynamic monitoring method and other mature remaining oil research methods at home and abroad, the distribution of remaining oil in XX oilfield is studied. Through the understanding of the remaining oil distribution law, combined with the oil field water injection development practice to guide the tapping of remaining oil. Aiming at the problems existing in injection-production well pattern, the adaptability of injection-production well pattern is studied by using dynamic monitoring and numerical simulation techniques, and the adjustment scheme is worked out to increase the control degree of water drive and increase the recovery factor. In view of the problem of quick rise of water cut by edge water in oil field, applying reservoir engineering method and numerical simulation method to carry out research on edge water energy, through strengthening swabbing parameter adjustment, strengthening reasonable pressure control, strengthening water shutoff and other technical means, etc. Restrain the advance of edge water and control the increase of water content effectively; In view of the complex distribution of oil, gas and water in oil field, the field test study of oil and gas balanced production is carried out, and the method of oil and gas balanced production is further explored with numerical simulation technology. In this paper, the XX oilfield is taken as the research object, the remaining oil distribution analysis and reservoir potential simulation analysis are carried out, and the comprehensive research of supporting potential tapping measures is carried out to form a new model of comprehensive tapping potential in XX oilfield. It has certain guiding significance for the later development of other similar reservoirs.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE327

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