扶余油田二次开发稳产技术对策研究

发布时间：2018-04-17 08:02

本文选题：扶余油田 + 二次开发　；参考：《东北石油大学》2015年硕士论文

【摘要】：扶余油田经过近五年二次开发综合调整改造以来,井网、井况、地面系统得到明显改善。原油产量第三次达到年产百万吨的产量,取得了明显的成效。但由于扶余油田地层地质复杂,裂缝大孔道发育,水驱规律复杂,油层水淹水洗严重,造成调整后含水上升速度较快,无效水循环严重,稳产难度大;东部油层发育复杂,井网不十分完善,地层压力低,地下原油粘度增大,开发能力没有得到很好发挥;城乡结合无法建立完善的注采井网,地下资源没有充分利用等原因,导致产量递减较快,稳产技术和对策是需要解决的问题。本文在总结历史开发过程的认识基础上,从认清单砂体内部剩余油分布状况入手,开展单砂体水驱油机理研究及基于细分重组井网;在单砂体构型研究基础上,确定水驱提高剩余储量动用方式,评价油藏水驱采收率提高潜力,同时结合现场实验情况,完善配套的工艺技术;针对目前三次井网调整后,无效水循环严重问题,制定了合理适用的二次开发注水技术政策和工程技术对策,完善有效驱替技术方法。
[Abstract]:The well pattern, well condition and surface system in Fuyu Oilfield have been improved obviously since the comprehensive adjustment and transformation of secondary development in the past five years.Crude oil production reached the annual output of million tons for the third time, and achieved obvious results.However, due to the complex stratigraphic geology of Fuyu Oilfield, the development of large fracture channels, the complex rule of water drive, the serious flooding and washing of oil layers, the rapid rise of water cut after adjustment, the serious invalid water cycle, the difficulty of stable production, and the complex development of the eastern reservoir,The well pattern is not perfect, the formation pressure is low, the viscosity of underground crude oil increases, the development ability is not well developed, the perfect injection-production well pattern can not be established in combination of urban and rural areas, the underground resources are not fully utilized, and so on.Stable production technology and countermeasures are the problems that need to be solved.On the basis of summarizing the historical development process, this paper starts with the understanding of the distribution of residual oil in the single sand body, studies the oil displacement mechanism of the single sand body and the recombination well pattern based on the subdivision, and studies the configuration of the single sand body.To determine the way of water flooding to increase the production of remaining reserves, to evaluate the potential of reservoir water drive recovery improvement, and to improve the matching technology in combination with the field experiments, aiming at the serious problems of ineffective water circulation after the adjustment of the three well patterns at present,The reasonable and applicable policy of secondary development water injection technology and engineering technical countermeasures are worked out, and the effective displacement technology method is improved.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE357.6

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