岩性油气藏 ›› 2017, Vol. 29 ›› Issue (5): 148–154.doi: 10.3969/j.issn.1673-8926.2017.05.018

• 油气田开发 • 上一篇    下一篇

渤海海域A油田夹层控制下的剩余油分布模式

刘超, 李云鹏, 张伟, 冯海潮, 王颍超   

  1. 中海石油(中国)有限公司天津分公司渤海石油研究院, 天津 300459
  • 收稿日期:2017-03-17 修回日期:2017-07-19 出版日期:2017-09-21 发布日期:2017-09-21
  • 第一作者:刘超(1984-),男,硕士,工程师,主要从事油田开发地质方面的研究工作。地址:(300459)天津市滨海新区海川路2121号渤海石油研究院。Email:liuchao5@cnooc.com.cn。
  • 基金资助:
    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

Remaining oil distribution pattern controlled by interlayer in A oilfield in Bohai Sea

LIU Chao, LI Yunpeng, ZHANGWei, FENG Haichao, WANG Yingchao   

  1. Bohai Oilfield Research Institute, Tianjin Branch of CNOOC Ltd., Tianjin 300459, China
  • Received:2017-03-17 Revised:2017-07-19 Online:2017-09-21 Published:2017-09-21

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1m,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。

关键词: 致密油储层, 溶蚀孔隙, 成因机理, 芦草沟组, 吉木萨尔凹陷

Abstract: In order to analyze distribution rule of remaining oil controlled by interlayer,the reservoir architecture and numerical simulation analysis of interlayer were carried out in Bohai A oilfield with high water cut stage. The results show that foreset imbricate interlayers are mainly composed of shale interlayer and tight sandstone interlayer,which average thickness is less than one meter. The remaining oil is controlled by position and area of interlayer. The longer the horizontal extension length of interlayer is,the greater the enrichment area of remaining oil is in the bottom zone of interlayer. In the injection well,oil well and interlayer configuration,when the production well penetrated into interlayer,interlayer has greater effect on remaining oil,which will be more enriched in bottom zone of the interlayer. Under the control of interlayer and reservoir rhythmicity,the remaining oil distribution patterns were divided into three types:interlayer top enrichment type,interlayer top-bottom enrichment type and interlayer bottom enrichment type. The results provide decision basis for adjustment,tapping potential and stabilizing oil and controlling water measures in late stage of oilfield.

Key words: tight oil reservoirs, dissolved pores, formation mechanism, Lucaogou Formation, Jimsar Sag

中图分类号: 

  • TE122
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