扎纳若尔油田Γ北Γ3Γ4油层段剩余油分布规律研究

发布时间：2018-07-04 15:37

本文选题：中低含水期油藏 + 数值模拟　；参考：《西南石油大学》2015年硕士论文

【摘要】：扎纳若尔油田Γ北Γ3Γ油层段经过几十年的水驱开发,目前仍处于中低含水期,但开发矛盾日益突出：日产油量下降,稳产难度大,含水上升快,油水关系复杂,剩余油分布难以预测。截止2012年10月,油藏采出程度仅24.41%,地下仍有6741.05×104m3的可采储量未被开采出。因此对油藏剩余油分布规律的研究以及制定合理的增产措施是目前迫切需要解决的问题。本文建立了r北F3F4油层段数值模拟模型,进行生产历史拟合,拟合了地质储量、油藏压力、综合含水率、井底压力以及单井含水率等多项指标,历史拟合中充分利用了水淹层测井解释结果以及产吸剖面测试结果,指导了历史拟合参数的调整。根据历史拟合得到的剩余油饱和度和剩余油储量丰度,提出了四种剩余油控制类型,其中井网不完善型约占32%,井间滞留型约占38%,断层遮挡型约占9%,层间干扰型约占21%。历史拟合结束后,选取典型井组建立机理模型展开剩余油影响机理研究,通过对注水倍数的研究,将微观注水倍数在平面上进行量化表征,统计各网格微观注水倍数与网格含水、含油饱和度以及采出程度的关系,使得从微观上定量分析剩余油分布规律以及评价油藏注水开发效果成为可能。统计宏观注水倍数与采出程度以及含水率的关系,分析油藏开发的不同阶段宏观注水倍数对开发效果的影响。利用多层合采机理模型,从采出程度和小层进水量出发,研究了非均质性对剩余油分布的影响机理,结合微观注水倍数平面分布,剖析了非均质性影响采出程度的原因。通过数值模拟研究以及剩余油机理研究,结合油藏目前的实际情况,提出了补孔堵水和打加密井两种增产方案,并利用油藏数值模拟手段对开发方案进行比较,选出最优开发调整方案。
[Abstract]:After decades of water drive development, the 螕 North 螕 3 interval in Zanaroer Oilfield is still in the middle and low water cut stage, but the contradiction of development is increasingly prominent: the daily oil production is decreasing, the stable production is difficult, the water cut is rising rapidly, and the oil-water relationship is complex. The distribution of remaining oil is difficult to predict. As of October 2012, the recovery degree of the reservoir is only 24.41%, and there are still 6741.05 脳 104m3 recoverable reserves unexploited underground. Therefore, the research on the distribution of remaining oil and the formulation of reasonable measures for increasing production are urgent problems to be solved. In this paper, a numerical simulation model of r north F3F4 reservoir is established, and the production history is fitted to fit many indexes, such as geological reserves, reservoir pressure, comprehensive water cut, bottom hole pressure and single well water cut, etc. In historical fitting, the interpretation results of water-flooded zone logging and the test results of production and absorption profile are fully utilized, which guides the adjustment of historical fitting parameters. According to the residual oil saturation and remaining oil reserves abundance obtained by historical fitting, four types of residual oil control types are proposed, among which the imperfect well pattern is about 32, the interwell retention is about 38, the fault occlusion is about 9, and the interlayer interference is about 21. After historical fitting, the mechanism model of typical well group is selected to study the influence mechanism of residual oil. Through the study of water injection ratio, the micro water injection multiple is quantified on the plane. It is possible to analyze the distribution of residual oil microscopically and evaluate the effect of reservoir waterflooding development by counting the relationship between the microcosmic water injection multiple of each grid and the water cut, oil saturation and recovery degree of the grid. The relationship between macro water injection ratio, recovery degree and water cut is analyzed, and the influence of macro water injection ratio on development effect in different stages of reservoir development is analyzed. The influence mechanism of heterogeneity on the distribution of residual oil is studied by using the multi-layer combined production mechanism model and the degree of recovery and the inflow of water into small layers. The reasons for the influence of heterogeneity on the degree of recovery are analyzed in combination with the plane distribution of microcosmic water injection multiple. Through numerical simulation and residual oil mechanism research, combined with the actual situation of oil reservoir at present, this paper puts forward two schemes of increasing production, that is, filling hole, plugging water and drilling infill wells, and compares the development schemes with reservoir numerical simulation. Select the optimal development adjustment scheme.
【学位授予单位】：西南石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE357.6;TE327

【参考文献】