西南石油大学学报(自然科学版) ›› 2016, Vol. 38 ›› Issue (6): 81-89.DOI: 10.11885/j.issn.1674-5086.2015.12.23.01

• 地质勘探 • 上一篇    下一篇

基于水平井信息的单一河口坝内部增生体识别

张瑞, 廖新武, 刘宗宾, 张雪芳, 司少华   

  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:2015-12-23 出版日期:2016-12-01 发布日期:2016-12-01
  • 通讯作者: 张瑞,E-mail:zhangrui40@cnooc.com.cn
  • 作者简介:张瑞,1990年生,男,汉族,四川安县人,硕士,主要从事油气田开发地质方面的研究工作。E-mail:zhangrui40@cnooc.com.cn;廖新武,1972年出生,男,汉族,湖北武穴人,高级工程师,硕士,主要从事油气田开发方面的研究工作。E-mail:liaoxw@cnooc.com.cn;刘宗宾,1978年出生,男,汉族,山东青岛人,高级工程师,硕士,主要从事油气田开发方面的研究工作。E-mail:liuzb@cnooc.com.cn;张雪芳,1985年生,女,汉族,河北唐山人,工程师,硕士,主要从事油气田开发地质方面的研究工作,E-mail:zhangxf29@cnooc.com.cn;司少华,1988年生,男,汉族,山东潍坊人,硕士,主要从事油藏工程方面的研究工作。E-mail:sishh2@cnooc.com.cn
  • 基金资助:
    国家科技重大专项(2011ZX05024)。

Recognition of Accretion of Sand Bodies in Single Mouth Bar Based on Horizontal Well Data

ZHANG Rui, LIAO Xinwu, LIU Zongbin, ZHANG Xuefang, SI Shaohua   

  1. Tianjin Branch, CNOOC Co. Ltd., Tanggu, Tianjin 300452, China
  • Received:2015-12-23 Online:2016-12-01 Published:2016-12-01

摘要: 海上油田受地理位置限制,井距一般较大,利用现行的针对密井网区的多井模式拟合方法难以有效表征分布规模较小的单一河口坝内部增生体。为此,利用渤海X油田大量水平井资料,开展了基于水平井资料的单一河口坝内部增生体识别。研究表明,水平井水平段垂向上在单一河口坝内部钻进,其横向钻进直接钻遇河口坝内部增生体,通过统计其钻遇的侧积夹层及叠置界面,得到研究区侧积夹层分布规模统计值,进而指导单一河口坝内部增生体识别。将该方法应用于渤海X油田,统计表明,水平井水平段普遍在240~320 m,井间发育3~6期侧积夹层(叠置面)。该方法不仅对缺少小井距及岩芯资料的海上油田具有实用价值,对相似油田的小级别构型单元识别也具有参考价值。

关键词: 大井距, 河口坝, 储层构型, 水平井, 增生体

Abstract: A distant well spacing is often allocated for offshore oilfield due to the geographical restrictions. Consequently, the characterization of such underground reservoir structures with the current overlay method for multi-well models used mainly under dense-well pattern conditions usually achieves a poor precision. Therefore, based on a large number of horizontal well data of X Oilfield in Bohai Bay, we did the research on characterizing such debouch bar reservoir structures:Horizontal section which is always drilled in the inner debouch bar can meet the debouch bar accretion sand bodies when drilled laterally. So, we used the scale statistic data of the drilled accretion sand bodies to guide the characterization of accretion sand bodies. With using the method in X Oilfield in Bohai Bay, it shows that the length of horizontal interval is always between 240-320 m, and there are 3-6 stages of lateral accretion interbed (overlay surface). This study has not only a significantly economic value in efficiently developing reservoirs of offshore oilfield where there is a lack of multi-well models data and test data, but also guiding significance for similar onshore oilfields in characterizing lower level structure elements.

Key words: large hole spacing, the debouch bar, reservoir architecture, horizontal well, accretion sand bodies

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