渤海海域A油田夹层控制下的剩余油分布模式

发布时间：2018-01-20 07:20

本文关键词： 剩余油分布数值模拟夹层储层构型渤海海域　出处：《岩性油气藏》2017年05期 　论文类型：期刊论文

【摘要】：为分析并总结夹层控制下的剩余油分布规律,以高含水开发阶段的渤海海域A油田为研究对象,开展了储层夹层构型精细解剖和数值模拟研究。结果表明:渤海A油田夹层以泥质夹层和物性夹层为主,平均厚度小于1 m,表现为顺物源的"前积式"和垂直物源的"上拱式"展布样式。内部夹层的延伸规模、发育位置控制着剩余油的分布位置和富集程度。夹层水平延伸距离越远,夹层底部区域剩余油的富集范围越大;在注采井与夹层配置方面,采油井钻遇夹层的情况下,夹层对剩余油分布影响更大,夹层底部剩余油更为富集;在夹层和储层韵律性控制下,层内剩余油分布模式分为夹层顶部富集型、夹层上下富集型和夹层底部富集型3种。该成果对油田后期调整挖潜和实施稳油控水措施均提供了决策依据。
[Abstract]:In order to analyze and summarize the distribution of remaining oil under intercalation control, A oilfield in Bohai Sea area with high water cut is taken as the research object. The fine anatomy and numerical simulation of reservoir interlayer configuration have been carried out. The results show that the intercalation in Bohai A oilfield is dominated by muddy intercalation and physical intercalation, and the average thickness is less than 1 m. The distribution and enrichment degree of residual oil are controlled by the extension scale and developmental position of inner intercalation, and the distance of horizontal extension of interlayer is further. The enrichment range of residual oil in the bottom of intercalation is larger; In the case of injection-production wells and intercalation, the intercalation affects the distribution of remaining oil more greatly, and the remaining oil at the bottom of the interlayer is more enriched. Under the control of intercalation and reservoir rhythm, the remaining oil distribution pattern in the interlayer can be divided into the enrichment type at the top of the intercalation. There are three types of enrichment in the upper and lower layers and the enrichment in the bottom of the intercalation. This result provides a decision basis for the adjustment and tapping of potential in the later stage of the oilfield and the implementation of the measures of stabilizing oil and controlling water.
【作者单位】：中海石油(中国)有限公司天津分公司渤海石油研究院;
【基金】：国家重大科技专项“海上油田丛式井网整体加密及综合调整油藏工程技术示范”(编号:2011ZX05057-001)和“渤海油田加密调整及提高采收率油藏工程技术示范”(编号:2016ZX05058-001)联合资助
【分类号】：TE53
【正文快照】： 0引言随着油田注水开发进入高含水期,剩余油分布情况复杂,挖潜难度增大,夹层对于水淹程度及剩余油分布的影响日益显著。前人对储层夹层的研究主要侧重于夹层的成因、分类和展布特征等方面[1-3],而对夹层的分布样式、夹层对剩余油控制作用等方面研究则相对较少。特别是由于层内

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