天然气地球化学

黄骅坳陷歧南凹陷烃源岩评价

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  • 大港油田公司勘探开发研究院,天津 300280

收稿日期: 2009-05-06

  修回日期: 2009-11-02

  网络出版日期: 2009-12-10

Comprehensive Evaluation of Source Rock of Qinan Sag,Huanghua Depression

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  • Exploration & Development Research Institute of Dagang Oilfield, Tianjin 300280, China

Received date: 2009-05-06

  Revised date: 2009-11-02

  Online published: 2009-12-10

摘要

从歧南凹陷QN3井有机碳、饱和烃气相色谱分析等多种化验分析资料出发,对QN3井各层段地层暗色泥岩有机质进行系统评价。评价结果认为,歧南凹陷东一段属于非烃源岩,东二段以中等烃源岩为主,部分为好烃源岩,东三段、沙一段、沙二段和沙三段均属于好烃源岩,干酪根类型以Ⅰ2型为主,但浅层成熟度偏低,进入生油门限的深度在2 900~3 000 m之间;埋深在3 400~3 500 m之间时开始大量生油,具备生成工业油气的条件。

本文引用格式

王振升,刘庆新,谭振华,赵仕民,吕卫东 . 黄骅坳陷歧南凹陷烃源岩评价[J]. 天然气地球科学, 2009 , 20(6) : 968 -971 . DOI: 10.11764/j.issn.1672-1926.2009.06.968

Abstract

Based on many analytical data such as organic carbon and gas chromatography of saturated hydrocarbon of well QN3 in the Qinan Sag, organic matters in the dark shale of every formation has been evaluated systematically.The result of evaluation is that, in this well, the abundance of organic matter is low in Ed1, moderate in Ed2, and the four formations of  Ed3, Es1, Es2 and Es3 have good source rocks.The dominant type of kerogen isⅠ2, but the maturity of shallow layer is low.The depth of oil threshold is 2 900~3 000 m.About the climax of oil generation occurs in 3 400~3 500 m.The depression possesses conditions for commercial oil and gas.Source rock; Comprehensive evaluation; Organic matter; Qinan Sag.

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