特种油气藏 ›› 2020, Vol. 27 ›› Issue (4): 33-40.DOI: 10.3969/j.issn.1006-6535.2020.04.005

• 地质勘探 • 上一篇    下一篇

银额盆地拐子湖凹陷北部烃源岩特征及控制因素

蒋航1,2, 曾德铭1,2, 刘护创3, 黑伟3, 潘宾锋3, 谢晓斌1,2   

  1. 1.西南石油大学,四川 成都 610500;
    2.油气藏地质及开发工程国家重点实验室,四川 成都 610500;
    3.陕西延长石油(集团)有限责任公司,陕西 西安 710065
  • 收稿日期:2019-10-15 修回日期:2020-04-15 出版日期:2020-08-25 发布日期:2022-02-18
  • 通讯作者: 曾德铭(1978—),男,副教授,2002年毕业于西南石油学院资源勘查工程专业,2007年毕业于西南石油大学矿产普查与勘探专业,获博士学位,现主要从事沉积储层方面研究工作。
  • 作者简介:蒋航(1995—),男,2017年毕业于西南石油大学资源勘查工程专业,现为该校矿产普查与勘探专业在读硕士研究生,主要从事沉积储层及地质勘探研究工作。
  • 基金资助:
    国家科技重大专项 “全球性海侵(湖侵)与气候变化对大型地层油气藏形成的控制作用”(2017ZX05001001-002)

Source-Rock Characterization and Main-Controlling Factors in the Northern Guaizihu Depression of Yin'e Basin

Jiang Hang1,2, Zeng Deming1,2, Liu Huchuang3, Hei Wei3, Pan Binfeng3, Xie Xiaobin1,2   

  1. 1. Southwest Petroleum University, Chengdu, Sichuan 610500, China;
    2. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation (Southwest Petroleum University), Chengdu, Sichuan 610500, China;
    3. Shaanxi Yanchang Petroleum (Group) Corp. Ltd., Xi'an, Shaanxi 710065, China
  • Received:2019-10-15 Revised:2020-04-15 Online:2020-08-25 Published:2022-02-18

摘要: 针对拐子湖凹陷勘探程度较低、有效烃源岩分布及控制因素不明确的问题,运用有机地球化学、沉积层序及构造演化分析方法,对温1井烃源岩特征及主控因素展开研究。研究结果表明:研究区烃源岩有机质丰度整体较低,受沉积层序、构造综合影响,高位体系域有利于有机质富集;有机质类型为腐泥腐殖型和腐殖型;有机质热演化程度差异较大,富泥质岩类的发育可促进早期的热演化进程,构造的后期抬升使局部生烃时间大幅缩短,故有机质成熟度从未成熟至高成熟均有分布;烃源岩展布受断裂及沉积演化控制明显。该研究可为拐子湖凹陷北部下一步勘探提供参考。

关键词: 烃源岩, 沉积层序, 构造演化, 控制因素, 储层特征, 拐子湖凹陷

Abstract: In order to enhance the hydrocarbon exploration level in the Guaizihu Depression and determine the effective source-rock distribution and controlling factors, the source-rock in the Well Wen1 was characterized and the corresponding main-controlling factors were analyzed by adopting organic geochemistry, sedimentary sequence and tectonic evolution analyses. Research indicates that the source-rock in the whole region shows a relatively low organic matter abundance due to the comprehensive influence of sedimentary sequence and structure. Highstand systems tract is favorable to the organic matter enrichment. The corresponding organic matter consists of sapropelic-humic and humic categories. The thermal evolution of organic matter shows a quite great difference. Muddy rock development can promote the early thermal evolution process, and the late structure uplift greatly shortens the local hydrocarbon generation time, so the organic matter maturity in this region is from immature to high mature. The source-rock distribution is greatly dependent on the faults and sedimentary evolution. This research could provide certain reference for the geological understanding of northern Guaizihu Depression.

Key words: source-rock, sedimentary sequence, tectonic evolution, controlling factor, reservoir property, Guaizihu Depression

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