岩性油气藏 ›› 2022, Vol. 34 ›› Issue (6): 92–100.doi: 10.12108/yxyqc.20220608

• 地质勘探 • 上一篇    

鄂尔多斯盆地甘泉地区上古生界烃源岩地球化学特征及生烃潜力

魏新1,2, 唐建云1,2,3,4, 宋红霞5, 陈玉宝6   

  1. 1. 克拉玛依职业技术学院, 新疆 克拉玛依 834000;
    2. 中国石油大学 (北京)克拉玛依校区, 新疆 克拉玛依 834000;
    3. 西北大学 地质学系/大陆动力学国家重点实验室, 西安 710069;
    4. 江西省放射性地学大数据技术工程实验室, 南昌 330013;
    5. 中国石油吐哈油田分公司勘探开发研究院, 新疆 哈密 839009;
    6. 延长油田股份有限公司, 陕西 延安 716005
  • 收稿日期:2022-02-15 修回日期:2022-05-24 发布日期:2022-11-09
  • 作者简介:魏新(1970-),男,博士,主要从事储层地质学及教育教学管理工作。地址:(834000)新疆维吾尔自治区克拉玛依市克拉玛依区安定路355号。Email:406744925@qq.com。
  • 基金资助:
    新疆维吾尔自治区自然科学基金“吉木萨尔致密油渗流机理特征及开发方式基础实验研究”（编号： 2017D01B56）、大陆动力学国家重点实验室开放基金“准噶尔盆地周缘石炭系成藏条件及有利区预测”（编号： 20LCD04）、江西省重点实验室开放基金“基于叠前AVO反演技术的火成岩内幕精细刻画及储层预测”（编号： JELRGBDT202008）及中国高校产学研创新基金“基于大数据及人工智能的井位优化及远程踏勘平台”（编号2021LDA06005）联合资助

Geochemical characteristics and hydrocarbon generation potential of Upper Paleozoic source rocks in Ganquan area，Ordos Basin

WEI Xin1,2, TANG Jianyun1,2,3,4, SONG Hongxia5, CHEN Yubao6   

  1. 1. Karamay Vocational and Technical College, Karamay 834000, Xinjiang, China;
    2. China University of Petroleum(Beijing)at Karamay, Karamay 834000, Xinjiang, China;
    3. Department of Geology/State Key Laboratory of Continental Dynamics, Northwest University, Xi' an 710069, China;
    4. Jiangxi Engineering Laboratory on Radioactive Geoscience and Big Data Technology, Nanchang 330013, China;
    5. Research Institute of Exploration and Development, PetroChina Tuha Oilfield Company, Hami 839009, Xinjiang, China;
    6. Yanchang Petroleum Co., Ltd., Yan' an 716005, Shaanxi, China
  • Received:2022-02-15 Revised:2022-05-24 Published:2022-11-09

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摘要： 对鄂尔多斯盆地甘泉地区上古生界本溪组和山西组的煤系泥岩、炭质泥岩及煤岩样品进行了有机碳含量测定、岩石热解分析、干酪根显微组分鉴定及镜质体反射率等多项有机地球化学测试，并评价了其生烃潜力。研究结果表明：①甘泉地区上古生界发育多套烃源岩，岩性主要为煤和暗色泥岩。②山西组有机质丰度高，是较好的烃源岩，本溪组有机质丰度则相对较低，品质相对较差；本溪组烃源岩以腐殖型Ⅲ类为主，山西组烃源岩则多为腐殖型Ⅲ类，其次为腐泥-腐殖型Ⅱ2类。③本溪组和山西组烃源岩成熟度整体处于高成熟—过成熟阶段。④上古生界烃源岩在甘泉地区广泛分布，本溪组烃源岩累计厚度为10～20 m，山西组烃源岩累计厚度为50～80 m，整体均为较优质烃源岩，具有较高的生烃潜力。

关键词: 烃源岩, 地球化学特征, 生烃潜力, 山西组, 本溪组, 上古生界, 甘泉地区, 鄂尔多斯盆地

Abstract: A number of organic geochemical tests such as organic carbon content determination，rock pyrolysis analysis，kerogen maceral identification and vitrinite reflectance，were carried out on coal measure mudstone， carbonaceous mudstone and coal rock samples of Benxi Formation and Shanxi Formation of Upper Paleozoic source rocks in Ganquan area of Ordos Basin，and the hydrocarbon generation potential was evaluated. The results show that： （1）There are many sets of source rocks developed in Upper Paleozoic in Ganquan area， and the lithologies are mainly coal and dark mudstone.（2）The organic matter of Shanxi Formation has high abundance and it is a good source rock. In contrast，the organic matter abundance of Benxi Formation is low and relatively poor. In terms of organic matter types，the source rocks of Benxi Formation are mainly humic type Ⅲ， while the source rocks of Shanxi Formation are mostly humic type Ⅲ， followed by sapropel-humic type Ⅱ2.（3）The maturity of source rocks of Benxi Formation and Shanxi Formation has been in the stage of high maturity to over maturity. （4）The Upper Paleozoic source rocks are widely distributed in Ganquan area. The cumulative thickness of source rocks of Benxi Formation is 10-20 m，and the cumulative thickness of source rocks of Shanxi Formation ranges from 50 m to 80 m. As a whole， they are relatively high-quality source rocks with high hydrocarbon generation potential.

Key words: source rock, geochemical characteristics, hydrocarbon generation potential, Shanxi Formation, Benxi Formation, Upper Paleozoic, Ganquan area, Ordos Basin

中图分类号: 

  • TE122
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