石油学报 ›› 2012, Vol. 33 ›› Issue (3): 414-418.DOI: 10.7623/syxb201203010

• 地质勘探 • 上一篇    下一篇

断层侧向封闭性定量研究方法的改进

付 广 史集建 吕延防   

  1. 东北石油大学地球科学学院 黑龙江大庆 163318
  • 收稿日期:2011-11-27 修回日期:2011-02-06 出版日期:2012-05-25 发布日期:2012-07-20
  • 通讯作者: 付 广
  • 作者简介:付 广,男,1962年11月生,1984年毕业于大庆石油学院石油地质专业,现为东北石油大学教授,主要从事油气藏形成与保存研究。
  • 基金资助:

    国家重大科技专项“大气田形成条件、成藏机制与富集规律研究”(2011ZX05007)资助。

An improvement in quantitatively studying lateral seal of faults

FU Guang SHI Jijian LU Yanfang   

  • Received:2011-11-27 Revised:2011-02-06 Online:2012-05-25 Published:2012-07-20

摘要:

为了更准确研究断层侧向封闭性,在前人断层封闭性定量研究的基础上,不仅考虑了断层岩压实成岩压力的影响,而且考虑了断层岩压实成岩作用时间的影响,改进了断层侧向封闭性定量研究方法。选取海拉尔盆地贝尔凹陷呼和诺仁B29号断层为例,利用改进前后断层侧向封闭性定量研究方法,对其在南屯组①~⑨号储层侧向封闭性进行了定量评价,改进后方法研究得到的断层侧向封闭性能力明显低于改进前方法研究得到的断层侧向封闭能力,表明改进前方法的评价结果可能过高地评估了断层侧向封闭能力,而改进后方法研究得到断层侧向封闭能力才更接近地下实际情况。

关键词: 侧向封闭性, 断层岩, 定量研究, 压实成岩压力, 压实成岩时间

Abstract:

In order to study lateral seal of faults more exactly, we improved a quantitative method for studying lateral seal of faults based on the previous quantitative studies on lateral seal of faults by considering not only the influence of compaction pressure but also the impact of compaction time during diagenesis on fault rocks. Taking the B29 fault of the Huhenouren Structure in the Beier Depression, Hailaer Basin as an example, we quantitatively evaluated the lateral seal of the 1~9 reservoir of the Nantun Formation by comparing the unimproved study approach with the improved one. The lateral seal ability of the B29 fault evaluated by the improved study approach is obviously lower than that derived from the unimproved study approach, probably indicating an overestimate on the actual lateral seal ability of faults that used to be once assessed by the previous unimproved study approach. Therefore, the lateral seal ability of faults evaluated by the improved study approach is closer to the actual lateral seal ability of faults.

Key words: lateral seal, fault rock, quantitative study, compaction pressure in diagenesis, compaction time in diagenesis