王场油田北区注水开发调整方案研究

发布时间：2017-12-27 22:04

本文关键词：王场油田北区注水开发调整方案研究　出处：《长江大学》2017年硕士论文　论文类型：学位论文

【摘要】：王场油田位于江汉油区潜江凹陷北部,主要为一长轴背斜。王场油田北区油组平面上表现为西南部及轴部油井产量高,北部及东北部油井产量低的特点,油井生产能力差异大。本文针对研究区块特征利用三维地质建模和油藏数值模拟方法为提高调整该区块的实际产量提供技术支持和开发调整方案。本文通过对王场油田北区测井资料的综合分析,结合前人对本区块沉积环境的研究结果,将北区划分为五个沉积微相:水下分流河道、水下分流河道侧缘、水下分流河道间、水下天然堤和河口坝。北区砂体主要分布在分流河道与河道侧缘;借由沉积微相的细分更进一步得到北区微相分布图。在得到相图分布的基础上,利用相控建模的方法,建立了三维精细地质模型,得到了王场油藏北区的构造模型、微相模型及属性模型。通过动态数值模拟,对地质储量、油气产量、含水量等指标进行历史拟合和储量复算,结合对地质因素和开发因素的影响分析得到了王场油田北区剩余油的分布情况。王场油田北区储量纵向上主要分布在潜4~(0-1)、潜4~(2-3)和潜4_下~2,其余层储量很少,因此潜4~(0-1)、潜4~(2-3)和潜4_下~2是下一步油藏开发关注的重点。针对王场油田北区开发中目前存在的含水上升快、注采系统不完善、注水效果差等问题,本次研究进行了注水效果性分析,得到本区注水典型的三种注水见效模式:快速水淹型、厚砂连通型和薄砂尖灭型;通过对三种注水现状的分析得到,仅有厚砂连通型注水效果好;快速水淹主要由于本区域采用高部位注水,而区域内地层倾角为50°左右,注入水快速向下流动,低部位采油井快速水淹;薄砂尖灭主要由于前人对砂体认识不够精细,井间砂体的不连通性导致无效注水,使得注水未达到预期目的。本次研究针对以上发现的几种注水类型,结合油田细分层系、井网加密及注采系统调整潜力,编制了以改善注水开发效果、提高储量有效动用程度为主要内容的调整方案,主要包括对注采井网不完善的地区采取补孔或加密、对地层能量不足的区域采用分层注水,为今后合理开发油田提供依据。
[Abstract]:The Wang field oil field is located in the northern Qianjiang sag of Jianghan oil area, mainly a long axis anticline. The oil wells in the north area of the Wang field oilfield show that the oil well production in the southwest and the axis is high, the oil well production in the north and the northeast is low, and the oil well production capacity is very different. According to the characteristics of the block, 3D geological modeling and reservoir numerical simulation are used to provide technical support and development adjustment plan for improving the actual output of the block. This article through to the north of Wangchang Oilfield Logging Data comprehensive analysis, combined with the results of previous studies on the sedimentary environment of the North block, will be divided into five sedimentary microfacies: underwater distributary channel, natural levee lateral border of subaqueous distributary channel, underwater distributary interchannel, underwater and estuary dam. The sand bodies in the north area are mainly distributed in the distributary channel and the channel side of the river, and the microphase distribution map of the northern region is further obtained by the subdivision of sedimentary microfacies. Based on the distribution of phase diagram, a three-dimensional fine geological model is established by means of facies controlled modeling, and the structural model, microfacies model and attribute model of the northern part of the Wang Chang reservoir are obtained. Through dynamic numerical simulation, geological fit, oil and gas production, water content and other indicators were used for historical fitting and reserves re calculation. Combined with the analysis of geological factors and development factors, the distribution of remaining oil in the northern area of Wang Chang oil field was obtained. The reserves in the northern part of the Wang Chang oil field are mainly distributed in the latent 4~ (0-1), the latent 4~ (2-3) and the hidden 4_ ~2, and the remaining layer reserves are very few. Therefore, the latent 4~ (0-1), the latent 4~ (2-3) and the ~2 below the 4_ below are the key points for reservoir development. In Wangchang oilfield North Development in the present water rising fast, injection production system is not perfect, poor water injection results, this study analyzed the effect of water injection, three kinds of water flooding pattern in this area water typical: fast flooded type, thick sand connectivity and thin sand pinchout; get through the analysis of three kinds of water situation, only thick sand connectivity type water injection effect is good; rapid flooding due to the high part of the main water area, and the regional stratigraphic dip is about 50 degrees, the injected water flows down quickly, the lower part of wells fast water flooded; thin sand pinchout sand body mainly due to previous knowledge fine enough, interwell sand body connectivity does not lead to invalid water injection, the injection did not achieve the intended purpose. The study on several types of water found, with oil, Layer Subdivision infilling and injection production system adjustment potential, developed to improve the adjustment scheme of water flooding development effect, improve the producing degree of reserves effective as the main content, including the imperfect injection production pattern of holes or encryption, take up the area the inadequate formation energy region by stratified water, providing basis for reasonable development of oilfield.
【学位授予单位】：长江大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE357.6

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