西南石油大学学报(自然科学版) ›› 2019, Vol. 41 ›› Issue (5): 10-20.DOI: 10.11885/j.issn.1674-5086.2018.08.06.01

• 地质勘探 • 上一篇    下一篇

PL油田浅水辫状河三角洲隔夹层精细表征方法

刘建华, 汪利兵, 赵靖康, 张俊, 孟云涛   

  1. 中海石油(中国)有限公司天津分公司, 天津 塘沽 300452
  • 收稿日期:2018-08-06 出版日期:2019-10-10 发布日期:2019-10-10
  • 通讯作者: 刘建华,E-mail:liujh10@cnooc.com.cn
  • 作者简介:刘建华,1979年生,男,汉族,湖北黄梅人,高级工程师,硕士,主要从事开发地质、储层及地质建模等方面的研究工作。E-mail:liujh10@cnooc.com.cn;汪利兵,1980年生,男,汉族,安徽安庆人,高级工程师,硕士,主要从事油气田开发、油气藏储层描述方面的研究工作。E-mail:wanglb3@cnooc.com.cn;赵靖康,1973年生,男,汉族,陕西咸阳人,高级工程师,主要从事油气田开发方面的研究。E-mail:zjk4846679@163.com;张俊,1981年生,男,汉族,四川名山人,高级工程师,硕士,主要从事油田开发方面的研究工作。E-mail:zj7258@126.com;孟云涛,1991年生,男,汉族,山西大同人,工程师,硕士,主要从事油气田开发地质等方面的研究工作。E-mail:mengyt2@cnooc.com.cn

A Fine Characterization Method of the Interbed in Shallow-water Braided Delta in the PL Oilfield

LIU Jianhua, WANG Libing, ZHAO Jingkang, ZHANG Jun, MENG Yuntao   

  1. CNOOC China Limited, Tianjin Branch, Tanggu, Tianjin 300452, China
  • Received:2018-08-06 Online:2019-10-10 Published:2019-10-10

摘要: 储层隔夹层精确表征能为油田剩余油分布规律研究和开发调整提供重要依据。从隔夹层表征方法的差异性角度出发,对浅水辫状河三角洲储层隔夹层进行重新分类,并依据层次建模思想对隔夹层进行逐层定量表征。研究认为,PL油田浅水辫状河三角洲储层隔夹层可划分为层间隔层、砂间夹层、砂内夹层和物性夹层4种类型,分别对应储层构型研究的6级至3级构型界面。应用3种建模方法分别对4种隔夹层进行逐层定量表征,即应用基于井孔资料的确定性三维砂描技术表征层间隔层和砂间隔层,应用基于自适应河道方法在单砂体的控制下对砂内夹层进行表征,应用等效表征的方法对物性夹层进行表征。分级定量隔夹层表征方法很好地再现了浅水辫状河三角洲储层结构和隔夹层分布特征,且简单实用。

关键词: 浅水辫状河三角洲, 隔夹层, 分级表征, 定量表征, 等效表征

Abstract: The fine characterization of the interbed in the reservoir can provide an important basis for exploring the distribution pattern of the residual oil and adjusting the development plan of the oil field. In this study, the interbed in the shallow-water braided delta in the PL Oilfield is re-classified from the perspective of the difference in the characterization method used for the interbed. A layer-by-layer quantitative characterization of the interbed is performed based on the principle of layered modeling. The study suggests that the interbed in the shallow-water braided delta in PL Oilfield can be divided into four types including the spacer interlayer, inter-sand interlayer, sand interlayer, and physical interlayer. These interlayers correspond to the level 6 to level 3 configuration interfaces in the reservoir architecture. Three different modeling methods are used to quantitatively characterize the four different interbeds layer by layer. Specifically, the spacer interlayer and sand interlayer are characterized by a borehole data-based deterministic three-dimensional sand drawing technology, the inter-sand interlayer is characterized using a self-adaptive river-based method with the single sand body controlling during the process, and the physical interlayer is characterized by an equivalent characterization method. The layered quantitative characterization method of the interbed is a simple and practical approach that reflects the reservoir structure and the interbed distribution characteristics in the shallowwater braided delta well.

Key words: shallow-water braided delta, interbed, layered characterization, quantitative characterization, equivalent characterization

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