自然科学版 英文版
自然科学版 英文版
自然科学版 英文版

您目前所在的位置:首页 - 期刊简介 - 详细页面

中南大学学报(自然科学版)

Journal of Central South University

第48卷    第3期    总第271期    2017年3月

[PDF全文下载]    [Flash在线阅读]

    

文章编号:1672-7207(2017)03-0742-09
东海盆地西湖凹陷平湖构造带超压系统与油气成藏
苏奥1,杜江民2,贺聪3,余雁4,王存武5,罗金洋6

(1. 中国地质大学 构造与油气资源教育部重点实验室,湖北 武汉,430074;
2. 河北地质大学 资源学院,河北 石家庄,050031;
3. 甘肃省油气资源研究重点实验室,中国科学院油气资源研究重点实验室,甘肃 兰州,730000;
4. 中国石油华北油田公司 地球物理勘探研究院,河北 任丘,062552;
5. 中海油研究总院,北京,100027;
6. 中国石油华北油田公司 科技信息处,河北 任丘,062552
)

摘 要: 应用流体包裹体分析、盆地模拟和有机地球化学等手段,研究东海西湖凹陷平湖构造带超压系统与油气成藏的相互关系。研究结果表明:平湖构造带油气主要来源于平湖组煤系源岩,而且油气主成藏期为晚期,与生烃增压的形成期大致相同,另外油气藏多分布在超压顶界面附近,这些均指示超压与油气成藏存在密切关系;镜质体反射率、地温梯度及包裹体均一温度反映的热异常,储层物性、非均一捕获的包裹体、“气烟囱”反映的流体压力异常、凝析油轻烃组分反映的组分异常证实研究区流体在超压主导下晚期高效率快速流体;高压流体的泄压排放诱发断裂开启,并为流体运移提供动力,从而控制油气在超压界面附近高效成藏。

 

关键字: 油气成藏;超压;流体流动;西湖凹陷;流体包裹体

Overpressure and hydrocarbon accumulation in Pinghu structural belt in Xihu Depression, East China Sea
SU Ao1, DU Jiangmin2, HE Cong3, YU Yan4, WANG Cunwu5, LUO Jinyang6

1. Key Lab of Tectonics and Petroleum Resource of Educational Ministry, China University of Geosciences, Wuhan 430074, China;
2. College of Resources, Hebei GEO University, Shijiazhuang 050031, China;
3. Key Laboratory of Petroleum Resources, Gansu Province/Key Laboratory of Petroleum Resources Research, Institute of Geology and Geophysics, Chinese Academy of Sciences, Lanzhou 730000, China;
4. Geophysical Exploration Research Institute of PetroChina Huabei Oilfield Company, Renqiu 062552, China;
5. CNOOC Research Institute, Beijing 100027, China;
6. Technological Information Division of PetroChina Huabei Oilfield Company, Renqiu 062552, China

Abstract:The relationship between overpressure and hydrocarbon accumulation was investigated using fluid inclusions, basin simulation and organic geochemistry. The results show that oil-gas in Pinghu structural belt is mainly derived from coal-measure source rocks in Pinghu formation. The main oil-gas accumulation occurred in late stage which is approximately consistent with the forming time of overpressure resulted by hydrocarbon generation. Besides, oil-gas pools are distributed near top overpressured surface. Overpressure is closely linked to hydrocarbon accumulation. The thermal anomaly from vitrinite reflectance, geotemperature gradient and homogenization temperatures of fluid inclusion, abnormal fluid pressure from physical property of reservoir, fluid inclusion with non-homogeneous capture and gas chimney, and abnormal components from light hydrocarbon indicate that efficient rapid fluid flow is controlled by overpressure. The discharging of high-pressure fluids induces opening of faults and provides power of fluid migration.

 

Key words: hydrocarbon accumulation; overpressure; fluid flow; Xihu depression; fluid inclusion

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
版权所有:《中南大学学报(自然科学版、英文版)》编辑部
地 址:湖南省长沙市中南大学 邮编: 410083
电 话: 0731-88879765(中) 88836963(英) 传真: 0731-88877727
电子邮箱:zngdxb@csu.edu.cn 湘ICP备09001153号