葡萄花油田葡萄花油层产量递减规律及调整方法研究

发布时间：2018-04-22 19:39

本文选题：低渗透油田 + 产量递减　；参考：《东北石油大学》2017年硕士论文

【摘要】：大庆外围油田油藏类型复杂、非均质性严重,属于注水开发难度大,经济效益较差的边际油田。随着外围油田注水开发的不断深入,外围“三低”油藏一些固有矛盾和问题逐渐暴露出来:注水受效差,采油速度低,产量递减快,稳产困难,加之外围油田从开发以来一直是以新区产能建设为主,对老井产量递减规律研究很少,因此本文采用理论分析、经验统计等方法,通过详细的剖析和研究来发现油田生产中的动态变化规律,依据对低渗透油藏的开发机理认识,结合矿场实际动态,分析产量递减规律,预测油藏产量,制定综合调整对策,从而为外围低渗透油田开发规划方案的编制提供科学依据。本文分析了葡萄花油田葡萄花油层递减规律的现状,并从理论方面对影响产量递减规律的因素进行了分析,结合油田实际,提出了减缓产量递减率的途径。确定出影响产量递减的主要因素包括注水调整、注采系统调整、新井投产、措施优化、时率利用率以及注水井分层合格率等因素。根据影响递减的因素,开展了控制油田递减的措施,通过二年多的综合治理,水驱控制程度增加1.63个百分点。地层压力上升0.40MPa。自然递减由治理前12.78%下降到9.86%;年均含水上升值由2.37%下降到1.08%,含水上率由2.11%下降到1.57%。根据影响产量递减的各项因素,提出了控制递减的调整方法,下步计划开展34口井射孔投产、43口油井转注,在zh201区块优选45口井进行补孔,预计措施工作量实施后,能持续将自然递减率控制在10%以内,年均含水上升幅度控制在3%以内。
[Abstract]:The oil reservoir in the peripheral oil field of Daqing is complicated and the heterogeneity is serious. It belongs to the marginal oilfield which is difficult to develop water injection and has poor economic benefit. With the continuous development of water flooding in the peripheral oilfield, some inherent contradictions and problems in the peripheral "three low" reservoirs are gradually exposed: the water injection is poor, the oil recovery is low, the production decline is fast, and the stable production is difficult, and the stable production is difficult. Since the development of the periphery oil field has been mainly in the new area capacity construction since the development, the law of the production decline of the old well is seldom studied. Therefore, this paper uses theoretical analysis, empirical statistics and other methods to find out the dynamic change law in oil field production through detailed analysis and research, according to the understanding of the development mechanism of low permeability reservoir and the combination of mine field reality. The law of production decline is analyzed, the output of the oil reservoir is predicted and the comprehensive adjustment strategy is formulated, which provides a scientific basis for the development of the development planning scheme of the peripheral low permeability oil fields. This paper analyzes the current situation of the decline law of the grape flower oil layer in the grape flower oil field, and analyses the factors that affect the decline law of the yield from the theoretical aspect. In the field of oil field, the way to reduce the decline rate of production is put forward. The main factors that affect production decline include the adjustment of water injection, the adjustment of the injection and production system, the production of Nii, the optimization of the measures, the utilization rate of the time rate and the qualified rate of the water injection well and so on. According to the factors affecting the decline, the measures to reduce the decline of the oil field have been carried out, through more than two years. Comprehensive control, water drive control increased by 1.63 percentage points. The natural decline of 0.40MPa. formation pressure decreased from 12.78% to 9.86%, the average annual water content increased from 2.37% to 1.08%, the water content decreased from 2.11% to 1.57%., and the adjustment method of decreasing control was proposed and the next step was planned. The perforation of 34 wells is put into operation, 43 wells are injected, and 45 wells are selected to fill the holes in the zh201 block. After the implementation of the measures, the natural decline rate can be kept within 10%, and the annual average water cut increase is less than 3%.

【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】：TE328

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