学术
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]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
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-成藏期后萎缩形成低压3个阶段。[著者文摘]
文章出处:
《石油学报》-2008年29卷2期,234 -226-230,234页
栏目信息:
分 类 号:
文献标识码:
A
文章编号:
0253-2697（2008）02-0226-05
Paleo-fluid pressure distribution and evolution of inclusions in the second member of Shanxi Formation in Yi-Shan Slope of Ordos Basin
LIU Jianzhang, CHEN Honghan, LI Jian, HU Guoyi, SHAN Xiuqin, CHEN Lei（ 1. Faculty of Earth Resources, China University of Geosciences, Wuhan 430074, China ; 2. Langf ang Branch Institute, PetroChina Exploration and Development Research Institute, Langf ang 065007, China ; 3. No. 1 Oil Production Factory, PetroChina Changqing Oil field Company , Yan ＇an 716000, China）
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.[著者文摘]
Key words:
Ordos Basin; Upper Paleozoic; fluid inclusions; paleo-fluid pressure distribution; thermodynamic modeling
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.
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