• 责任者：Shi Jiannan (State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation ; Chengdu University of Technology ; Chengdu 610059 ; China) ; Zheng Rongcai
• 刊名：Journal of Chengdu University of Technology
• 出版年：2009
• 卷期：36(5)
• 关键词：油气藏形成 ; reservoir formation ; 温度场 ; temperature field ; 四川盆地 ; Sichuan Basin
• 页码：p.531-537
• 图表：7 illus., 20 refs.
• 分类号：1003
• issnNo：ISSN1671-9727
• isbnNo：CN51-1634/N

This paper studies the evolution characteristics of temperature-pressure fields not only with data analysis of systematically continuous temperature, well testing and fluid inclusion but also with the numerical simulating technique in the Upper Permian Changxing Formation of the eastern Sichuan Basin. It is found that paleo-geothermal gradients are relatively high in the Huanglongchang and Wubaiti structural belts and the maximum values appear from Early Triassic to Middle Jurassic. Since 200 Ma B.P., the pressure field evolution shows two processes of quick increase and slow reduction. Moreover, the strong overpressure appears in the middle-late Yanshanian tectonic stage and takes on a well coupling relationship with the evolution history of the temperature field. The formation and evolution processes of temperature-pressure fields advance the hydrocarbon generation and expulsion in the source rocks of Upper Permian, drive high-quality dolomite reservoirs formation, and control fluids flow mechanism and flow style, migration pathway and accumulation area in the petroliferous basin.