盘古梁长6油藏堵水调剖技术研究

发布时间：2018-10-30 16:47

【摘要】：油井出水是注水开发油田面临的一个严重问题。长期注水开发的油田,由于油藏平面和纵向的非均质性、油水粘度上的差异以及油水井组内的不平衡,势必造成注入水沿高渗透带向生产井窜进,从而造成了注入水的低效循环,这不仅大大影响了原油的采出程度,而且会由于能源的消耗、产出液的处理、管线的腐蚀等大大增加采油成本和环境污染。为此,人们采用各种技术降低油井含水,其中调整吸水剖面作为一种效果好、成本低的技术。长庆盘古梁油田位于鄂尔多斯盆地中部偏北的陕北斜坡带上。根据现今的构造形态和盆地的演化史,鄂尔多斯盆地可分为：伊盟隆起、渭北隆起、西缘冲断带、晋西挠曲带、天环坳陷、陕北斜坡等6个次级构造单位,长庆盘古梁油田位于陕北斜坡。本文以长庆盘古梁油田为研究对象,通过对裂缝性油藏深部调剖、选井选层优化技术及微裂缝型调剖体系的研究。在综合地质研究的基础之上,采用化学调驱技术对油藏进行治理,而且化学调驱对改善吸水状况具有突出作用,增加了吸水厚度,提高了水驱效率,增油效果明显,为油藏稳产奠定了基础。
[Abstract]:Oil well effluent is a serious problem in water injection development. Because of the heterogeneity of reservoir plane and longitude, the difference in viscosity of oil and water and the imbalance in oil-water well group, the injected water will come into production well along the high permeability zone. This not only greatly affects the degree of crude oil recovery, but also greatly increases the cost of oil production and environmental pollution due to the consumption of energy, the treatment of output liquid, the corrosion of pipelines, and so on. Therefore, various techniques are adopted to reduce water cut of oil wells, among which adjusting water absorption profile is a good and low cost technology. Changqing Panguliang oilfield is located in the northern slope belt of north-central part of Ordos basin. According to the present structural morphology and the evolution history of the basin, the Ordos Basin can be divided into six sub-units: the Yimeng uplift, the Weibei uplift, the western margin thrust belt, the western Shanxi flexural belt, the Tianhuan depression, the northern Shaanxi slope, etc. Changqing Panguliang oil field is located on the slope of northern Shaanxi. In this paper, Panguliang Oilfield of Changqing is taken as the research object, through the deep profile control of fractured reservoir, well selection optimization technology and micro-fracture profile control system. On the basis of comprehensive geological research, the reservoir is treated by chemical control flooding technology, and chemical controlled flooding has prominent effect on improving water absorption, increasing water absorption thickness, increasing water drive efficiency and increasing oil production. It lays a foundation for stable production of oil reservoir.
【学位授予单位】：西安石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE357.6

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