特高含水期油田“四点五类”剩余油分类方法

发布时间：2018-01-06 22:38

本文关键词：特高含水期油田“四点五类”剩余油分类方法　出处：《石油钻探技术》2017年02期 　论文类型：期刊论文

【摘要】：特高含水期油田的油水分布状况复杂,需要明确其剩余油的定义、属性分类方法和水驱开发潜力评价方法。在油藏水驱极限驱油效率研究和渗流力学分析的基础上,选取油水渗流特征点对应的4个含油饱和度为剩余油分类界限点,建立了特高含水期油田"四点五类"剩余油属性分类方法。将特高含水期油田剩余油划分为富集油、相对富集油、可动用油、难动用油和残余油5类,分析了这5类剩余油的具体属性、开发调整对策及措施方向。根据提出的油田水驱开发潜力评价方法,将特高含水期油田水驱开发潜力划分为水驱极限潜力、可动用潜力和难动用潜力3类,并对中国石化10个中高渗透油田的剩余油属性分类和水驱开发潜力进行了分析,结果表明,特高含水后期普遍分布的剩余油以难动用油为主,局部富集的剩余油以相对富集油为主,注水开发极限潜力巨大,但近4/5为难动用潜力油藏。特高含水期油田"四点五类"剩余油分类方法明确了剩余油的分布特征,为制定不同类型剩余油开发调整措施提供了理论依据。
[Abstract]:The distribution of oil and water in oilfield is complex, need to clear definition of the remaining oil, the attribute classification method and water flooding development potential evaluation method. Based on the reservoir water flooding limit analysis of oil displacement efficiency study and seepage mechanics, 4 oil saturation of selecting the corresponding oil-water percolation feature points for the remaining oil classification limit. Established, oilfield "four point five" residual oil attribute classification method. Divide the remaining oil in high water cut period for oil enrichment, relative enrichment of available oil, oil, oil and residual oil to 5, analysis of the specific properties of these 5 types of residual oil, the adjustment of the development direction and countermeasures according to the evaluation measures. The water flooding potential method, the oilfield water flooding potential divided into water flooding limit potential available potential and difficult to produce potential class 3, and the Sinopec 10 medium and high permeability oil field The remaining oil property classification and water flooding potential were analyzed, the results show that the remaining oil distribution in high water cut stage is generally difficult to use oil, residual oil local enrichment in relatively concentrated oil, water flooding limit has great potential, but nearly 4/5 for producing potential reservoir. Remaining oil in high water cut period the "four point five" classification method to clear the distribution of remaining oil, and provides a theoretical basis for the formulation of different types of remaining oil development adjustment measures.

【作者单位】：中国石化石油勘探开发研究院;
【基金】：中国石化科技攻关项目“特高含水油田开发潜力及开发策略研究”(编号:P15126)部分研究内容
【分类号】：TE327
【正文快照】： 随着开发的不断深入,我国东部老油田普遍进入特高含水开发阶段,综合含水率大于90%的储量占55%、产量占60%。近几年,国内学者围绕特高含水期油田的剩余油分布[1-3]、渗流规律与开发特征[4-9]、开发对策[10-14]等开展了大量研究,特别是在剩余油分布方面[1-3],依托构造、储层的精

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