Rapid Determination of Complete Distribution of Pore and Throat in Tight Oil Sandstone of Triassic Yanchang Formation in Ordos Basin, China

doi:10.1111/1755-6724.13881

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	Rapid Determination of Complete Distribution of Pore and Throat in Tight Oil Sandstone of Triassic Yanchang Formation in Ordos Basin, China
	Du SH(杜书恒)1 ; Shi YM 2
发表期刊	ACTA GEOLOGICA SINICA-ENGLISH EDITION
	2020-06-01
卷号	94 期号:3 页码:822-830
ISSN	1000-9515
摘要	This study aimed to investigate the complete distribution of reservoir space in tight oil sandstone combining casting slices, field emission scanning electron microscopy (FE-SEM), the pore-throat theory model, high-resolution image processing, mathematical statistics, and other technical means. Results of reservoir samples from the Xin'anbian area of Ordos Basin showed that the total pore radius curve of the tight oil sandstone reservoir exhibited a multi-peak distribution, and the peaks appeared to be more focused on the ends of the range. This proved that pores with a radius of 1-50,000 nm provided the most significant storage space for tight oil, indicating that special attention should be paid to this range of the pore size distribution. Meanwhile, the complete throat radius curve of the tight oil sandstone reservoir exhibited a multi-peak distribution. However, the peak values were distributed throughout the scales. This confirmed that the throat radius in the tight oil sandstone reservoir was not only in the range of hundreds of nanometers but was also widely distributed in the scale approximately equal to the pore size. The new rapid determination method could provide a precise theoretical basis for the comprehensive evaluation, exploration, and development of a tight oil sandstone reservoir.
关键词	complete distribution tight oil reservoir multi-precision imaging mathematical statistics
DOI	10.1111/1755-6724.13881
收录类别	SCI ; CSCD
语种	英语
WOS记录号	WOS:000544351300023
关键词[WOS]	POROUS-MEDIA ; NATURAL-GAS ; HETEROGENEITY ; MIDDLE ; MODEL ; SCALE ; SIZE ; FLOW
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
项目资助者	National Natural Science Foundation of China[41902132] ; National Natural Science Foundation of China[11872363] ; National Natural Science Foundation of China[51861145314] ; PetroChina Innovation Foundation[2019D-5007-0214] ; Chinese Academy of Sciences (CAS) through the CAS Key Research Program of Frontier Sciences[QYZDJ-SSW-JSC019] ; CAS Strategic Priority Research Program[XDB22040401] ; National Science and Technology Mega Project of China[2017ZX05013005-009]
论文分区	Q3
力学所作者排名	1
RpAuthor	Du Shuheng
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/84777
专题	非线性力学国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; 2.Peking Univ, Oil & Gas Inst, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Du SH,Shi YM. Rapid Determination of Complete Distribution of Pore and Throat in Tight Oil Sandstone of Triassic Yanchang Formation in Ordos Basin, China[J]. ACTA GEOLOGICA SINICA-ENGLISH EDITION,2020,94,3,:822-830.
APA	杜书恒,&Shi YM.(2020).Rapid Determination of Complete Distribution of Pore and Throat in Tight Oil Sandstone of Triassic Yanchang Formation in Ordos Basin, China.ACTA GEOLOGICA SINICA-ENGLISH EDITION,94(3),822-830.
MLA	杜书恒,et al."Rapid Determination of Complete Distribution of Pore and Throat in Tight Oil Sandstone of Triassic Yanchang Formation in Ordos Basin, China".ACTA GEOLOGICA SINICA-ENGLISH EDITION 94.3(2020):822-830.

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