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DOI	10.1306/11211816511
	Resource potential and core area prediction of lacustrine tight oil: The Triassic Yanchang formation in ordos basin, China
	Zou C.; Guo Q.; Yang Z.; Wu S.; Chen N.; Lin S.; Pan S.
发表日期	2019
ISSN	0149-1423
卷号	103 期号:6
英文摘要	Unlike liquid-rich hydrocarbons in marine shale systems in North America, the Triassic Yanchang oil is preserved in tight sandstone reservoirs deposited in a lacustrine setting. The tight reservoir covers an area of 30,000 km2 (11,600 mi2) and is characterized by ultralow permeability (~0.001–1.00 md [~0.001 · 10-3–1.00 · 10-3 mm2]), a low subsurface pressure coefficient (0.6–0.8), and low single-well yield (several tons [10–40 bbl] to >10 tons [>70 bbl] per day). The reservoir also features a high content of quartz, feldspar, and carbonate (averaging 70%–80%) and low crude oil density of 0.84 g/cm3 (36.5° API) with an oil saturation of approximately 60%–80%. For the first time, this study employs the assessment of petroleum in-place resources based on the genesis and statistics predicting method (GSPM) and estimated ultimate recovery method for the tight oil in the Ordos Basin. The advantage of GSPM over previously reported methodologies is the suitable combination of genetic and statistical methods to estimate proximally sourced tight oil. The results show that the total in-place resource potential of the investigated tight oil is approximately 42.26 · 108 t (~295.82 · 108 bbl), with an average abundance of 15 · 104 t/km2 (99 · 104 bbl/mi2). The recoverable resources for the 50% probability of the Chang 7 tight oil accumulation is 3.11 · 108 t (21.77 · 108 bbl) in the Ordos Basin. The top two grades of the Chang 7 tight oil core area cover the total area of three layers comprising 12,745 km2 (4921 mi2), with 22.51 · 108 t (157.57 · 108 bbl) of in situ resources. Furthermore, the four most promising zones have been identified. Copyright ©2019. The American Association of Petroleum Geologists. All rights reserved.
语种	英语
scopus关键词	Feldspar; Low permeability reservoirs; Metamorphic rocks; Petroleum reservoir engineering; Estimated ultimate recoveries; In-place resources; Ordos basin , China; Recoverable resource; Resource potentials; Subsurface pressure; Tight sandstone reservoirs; Yanchang Formation; Oil wells; crude oil; hydrocarbon reservoir; hydrocarbon resource; lacustrine environment; petroleum hydrocarbon; prediction; recovery method; sandstone; saturation; shale; Triassic; China; North America; Ordos Basin
来源期刊	AAPG Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/125004
作者单位	PetroChina Research Institute of Petroleum Exploration and Development, Beijing, China
推荐引用方式 GB/T 7714	Zou C.,Guo Q.,Yang Z.,et al. Resource potential and core area prediction of lacustrine tight oil: The Triassic Yanchang formation in ordos basin, China[J],2019,103(6).
APA	Zou C..,Guo Q..,Yang Z..,Wu S..,Chen N..,...&Pan S..(2019).Resource potential and core area prediction of lacustrine tight oil: The Triassic Yanchang formation in ordos basin, China.AAPG Bulletin,103(6).
MLA	Zou C.,et al."Resource potential and core area prediction of lacustrine tight oil: The Triassic Yanchang formation in ordos basin, China".AAPG Bulletin 103.6(2019).