Dynamics of hydrocarbon accumulation in the west section of the northern margin of the Qaidam Basin, NW China

被引：0
作者：
机构：
[1] Key Laboratory of Petroleum Resources Research, Institute of Geology and Geophysics, Chinese Academy of Sciences
[2] PetroChina Qinghai Oilfield Company
[3] Department of Earth Sciences, Zhejiang University
来源：
Luo, X. (luoxr@mail.iggcas.ac.cn) | 1600年 / Science Press卷 / 40期
关键词：
Basin evolution; Carrier bed; Fluid potential; Migration pathway; Northern margin of Qaidam Basin; Petroleum accumulation dynamics;
D O I：
10.11698/PED.2013.02.04
中图分类号：
学科分类号：
摘要：
Studies were conducted on the dynamic processes of hydrocarbon migration and accumulation in the west part of the northern margin of the Qaidam Basin, based on previous studies on basin evolution and hydrocarbon system. Based on the dynamics of petroleum accumulation, basin analysis and the numerical stimulation method were applied to reconstruct the basin evolution. Simulation analysis of petroleum accumulation in the main reservoir-forming stages were conducted in the light of source rock properties in different stages, fluid potential field and physical property distribution of carrier beds. Controlling factors of reservoir formation in the northern margin of the Qaidam Basin were summarized. Studies showed that the Miocene is the main period of oil generation for the Jurassic source rocks in the studied area. The oil generation and migration volume were large. However, Saishiteng Sag was just on the slope in the northern part of Yiliping Sag. Structural traps were distributed at the margin of the basin. There was abundant oil migration to the north margin and a dissipation of the oil there during the later strong tectonic activities. During the late reservoir formation stage after the Pliocene, the source rocks generated mainly gas and not oil, and structural traps were well developed and provided good conditions for the natural gas reservoir formation. Deep structural traps in the basins were conducive to the formation of a large-scale low-permeability gas reservoir.
引用
收藏
页码：159 / 170
页数：11
相关论文
共 62 条
  • [1] Magoon L.B., Dow W.G., The petroleum system, AAPG Memoir 60: The Petroleum System: From Source to Trap, pp. 3-24, (1994)
  • [2] Zhao W., He D., Characteristics and exploration strategy of composite petroleum systems in China, Acta Petrolei Sinica, 23, 4, pp. 1-11, (2002)
  • [3] Zhang H., Fang C., Preliminary study on petroleum pool: Forming dynamics of basin, Acta Petrolei Sinica, 23, 4, pp. 7-12, (2002)
  • [4] Tian S., Chen J., Zhang S., Et al., Dynamic pool-formation system, Petroleum Explorationist, 1, 2, pp. 25-31, (1996)
  • [5] Yue F., Guo Y., Li T., Et al., The study status and tendency of reservoir formation dynamic system, Advance in Earth Sciences, 18, 1, pp. 122-126, (2003)
  • [6] Zhao Z., Du J., Zou C., Et al., Geological exploration theory for large oil and gas provinces and its significance, Petroleum Exploration and Development, 38, 5, pp. 513-522, (2011)
  • [7] Jin Z., Wang Q., Recent developments in study of the typical superimposed basins and petroleum accumulation in China: Exemplified by the Tarim Basin, Science in China: Series D: Earth Science, 47, S2, pp. 1-15, (2004)
  • [8] He D., Jia C., Zhou X., Et al., Control principles of structures and tectonics over hydrocarbon accumulation and distribution in multi-stage superimposed basins, Acta Petrolei Sinica, 26, 3, pp. 1-9, (2005)
  • [9] Yao G., Sun Y., The idea, content and methodology of studying reservoir dynamic model, Earth Science Frontiers, 22, 3-4, pp. 200-204, (1995)
  • [10] Yang J., Gong Z., Wu J., Et al., An outline of the research system for pool-forming dynamics, China Offshore Oil and Gas: Geology, 16, 2, pp. 92-97, (2002)
1234567