新疆石油地质

新疆石油地质 ›› 2005, Vol. 26 ›› Issue (6): 637-639.

• 油气勘探 • 上一篇    下一篇

柴西新近系上干柴沟组石油聚集效率分析

凡元芳1, 丰勇1, 姚剑2   

  1. 1.中国地质大学,武汉 430074;
    2.中国石化 胜利油田有限公司 地质科学研究院,山东 东营 257015
  • 收稿日期:2005-04-28 出版日期:2005-12-01 发布日期:2020-11-23
  • 作者简介:凡元芳(1980-),女,湖北宜城人,在读硕士研究生,石油地质,(Tel)13808638694 (E-mail)ddzyfyf@163.com.

Analysis of Oil Accumulation Efficiency of Upper Ganchaigou Formation of Neogene in Western Qaidam Basin

FAN Yuan-fang1, FENG Yong1, YAO Jian2   

  1. 1. China University of Geosciences, Wuhan, Hubei 430074, China;
    2. Research Institute of Geosciences, Shengli Oilfield Company Ltd., Sinopec, Dongying, Shandong 257015, China
  • Received:2005-04-28 Online:2005-12-01 Published:2020-11-23

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摘要： 新近系上干柴沟组是柴西地区的主力生油岩。在前人研究的基础上,对上干柴沟组生油岩的有机地球化学特征进行了研究,将其有机碳含量下限值厘定为 0.3%, 在此基础上计算的上干柴沟组的生烃– 聚集效率仅为 1.23%, 这一结果与 Leslic B.Magoon(1994)分析的美国阿拉斯加库克湾地区中侏罗统的石油聚集效率 11.5%相比显然很低,表明该研究区的石油有可能聚集在非构造圈闭中(虽然至今尚未发现此类油藏)。因此,研究区的非构造圈闭应作为今后工作的重点研究对象。

关键词: 柴达木盆地, 新近系, 生油层, 油气聚集, 效率

Abstract: Upper Ganchaigou formation of Neogene is the major source rocks in western Qaidam basin.Its geochemical feature is studied on the basis of previously studied results.The organic carbon content of 0.3% cut-off value is determined, by which the hydrocarbon generating efficiency of 1.23% is offered, being obviously lower than 11.5% of Jurassic formation of Cook Gulf area in Alaska of America given by Leslic B.Magoon in 1994.The study shows that the hydrocarbon may be accumulated in the non-structural traps to be found.These traps should consequently be the important targets for further exploration in the studied area.

Key words: Qaidam basin, Neogene, source rock, petroleum accumulation, efficiency

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