Characteristics of petroleum accumulation in syncline of the Songliao basin and discussion on its accumulation mechanism

doi:10.1007/s11430-007-0031-y

	Characteristics of petroleum accumulation in syncline of the Songliao basin and discussion on its accumulation mechanism
	Wu HeYong ; Liang XiaoDong ; Xiang CaiFu ; Wang YueWen
刊名	SCIENCE IN CHINA SERIES D-EARTH SCIENCES
	2007-05-01
卷号	50 期号:5 页码:702-709
关键词	oil droplet pore throat syncline oil reservoir low to ultra-low permeable reservoir stagnation non-Darcy flow
ISSN号	1006-9313
DOI	10.1007/s11430-007-0031-y
文献子类	Article
英文摘要	The relation between oil and water in reservoirs with low and ultra-low permeability is very complicated. Gravitational separation of oil and water is not obvious. Normal reservoirs are located in depression and structural high spot, oil and water transitions are located in their middle. Stagnation is the key fact of oil-forming reservoir in the axis of a syncline based on the research of oil, gas and water migration manner, dynamics and non-Darcy flow in the Songliao basin. In low and ultra-low permeable reservoir, gas and water migrate easily through pore throats because their molecules are generally smaller than the pore throats; but the minimum diameter of oil droplets is larger than pore throats and they must be deformed to go through. Thus, gas and water migrate in advance of oil, and oil droplets remain behind. Pressure differential and the buoyancy force in a syncline reservoir are a main fluid driving force; and capillary force is the main resistance to flow. When the dynamics force is less than resistance, oil is immobile. When the buoyancy force is less than the capillary force, a gravitational separation of oil and water does not occur. The reservoir in the mature source rock of a syncline area with the low and ultra-low permeability belongs to an unconventional petroleum reservoir.
WOS关键词	GAS ACCUMULATIONS ; MIGRATION ; SYSTEMS
WOS研究方向	Geology
语种	英语
出版者	SCIENCE CHINA PRESS
WOS记录号	WOS:000247177900007
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/67674]
专题	中国科学院地质与地球物理研究所
通讯作者	Wu HeYong
作者单位	1.Daqing Oil Field Explorat & Dev Res Inst, Daqing 163712, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 3.China Univ Petroleum, Basin & Reservoir Res Ctr, Beijing 102249, Peoples R China
推荐引用方式 GB/T 7714	Wu HeYong,Liang XiaoDong,Xiang CaiFu,et al. Characteristics of petroleum accumulation in syncline of the Songliao basin and discussion on its accumulation mechanism[J]. SCIENCE IN CHINA SERIES D-EARTH SCIENCES,2007,50(5):702-709.
APA	Wu HeYong,Liang XiaoDong,Xiang CaiFu,&Wang YueWen.(2007).Characteristics of petroleum accumulation in syncline of the Songliao basin and discussion on its accumulation mechanism.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,50(5),702-709.
MLA	Wu HeYong,et al."Characteristics of petroleum accumulation in syncline of the Songliao basin and discussion on its accumulation mechanism".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 50.5(2007):702-709.