石油学报 ›› 2008, Vol. 29 ›› Issue (2): 226-230,234.DOI: 10.7623/syxb200802012

• 地质勘探 • 上一篇    下一篇

鄂尔多斯盆地伊-陕斜坡山西组2段包裹体古流体压力分布及演化

刘建章1, 陈红汉1, 李剑2, 胡国艺2, 单秀琴2, 陈雷3   

  1. 1. 中国地质大学资源学院, 湖北武汉, 430074;
    2. 中国石油勘探开发研究院廊坊分院, 河北廊坊, 065007;
    3. 中国石油长庆油田公司第一采油厂, 陕西延安, 716000
  • 收稿日期:2007-01-19 修回日期:2007-11-09 出版日期:2008-03-25 发布日期:2010-05-21
  • 作者简介:刘建章,男,1976年9月生,2005年获中国地质大学(武汉)硕士学位,现为中国地质大学(武汉)在读博士研究生,主要研究方向为石油天然气地质学.E-mail:liujzh@126.com
  • 基金资助:
    教育部科学技术研究重点项目“海相碳酸盐岩缝-洞输导体系油气运聚机理研究”(No.106113)资助

Paleo-fluid pressure distribution and evolution of inclusions in the second member of Shanxi Formation in Yi-Shan Slope of Ordos Basin

LIU Jianzhang1, CHEN Honghan1, LI Jian2, HU Guoyi2, SHAH Xiuqin2, CHEN Lei3   

  1. 1. Faculty of Earth Resources, China University of Geosciences, Wuhan 430074, China;
    2. Langfang Branch Institute, PetroChina Exploration and Development Research Institute, Langfang 065007, China;
    3. No.1 Oil Production Factory, PetroChina Changqing Oilfield Company, Yan'an 716000, China
  • Received:2007-01-19 Revised:2007-11-09 Online:2008-03-25 Published:2010-05-21

摘要: 对鄂尔多斯盆地伊-陕斜坡上古生界太原组—山西组砂岩储层中流体包裹体样品进行了分析,将该储层中油气成藏划分为6个期次。结合埋藏史分析,确定了6期油气成藏发生的时间。运用流体包裹体PVT热动力学模拟的方法,获得了6期油气成藏时的古压力数据。对山2段6期次古压力时空分布及演化规律分析表明,区域构造和热史演化是古压力的主要控制因素,可将古压力演化划分为气藏形成初期的常压—成藏高峰期超压—成蔽期后萎缩形成低压3个阶段。

关键词: 鄂尔多斯盆地, 上古生界, 流体包裹体, 古压力分布, 热动力学模拟

Abstract: The fluid inclusion samples of sandstone reservoir in the Taiyuan and Shanxi formations of the Upper Paleozoic were analyzed in Yi-Shan Slope of Ordos Basin. The hydrocarbon charging period in the sandstone reservoirs can be divided into six times. The six charging times were determined by integrating the average homogenization temperature with burial historical curves. By employing the PVT thermodynamic modeling of fluid inclusions, the paleo-fluid pressures of the six hydrocarbon charging times were obtained. The paleo-fluid pressures distribution and evolution of the second member of Shanxi Formation showed that the evolution of regional tectonics and geothermal history mainly controlled the paleo-fluid pressure. The paleo-fluid pressure evolution was divided into three stages of hydrostatic pressure in the prophase stage, overpressure in the developing stage and subnormal pressure in the shrinking stage.

Key words: Ordos Basin, Upper Paleozoic, fluid inclusions, paleo-fluid pressure distribution, thermodynamic modeling

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