Study of the numerical simulation of tight sandstone gas molecular diffusion based on digital core technology

doi:10.1007/s12182-017-0210-1

CORC > 重庆绿色智能技术研究院 > 中国科学院重庆绿色智能技术研究院 > 生态过程与重建研究中心

	Study of the numerical simulation of tight sandstone gas molecular diffusion based on digital core technology
	Zhu, Hong-Lin1,2 ; Wang, Shou-Feng 3; Yin, Guo-Jun 3; Chen, Qiao1,2 ; Xu, Feng-Lin 2; Peng, Wei 4; Tan, Yan-Hu1 ; Zhang, Kuo 1
刊名	PETROLEUM SCIENCE
	2018-02-01
卷号	15 期号:1 页码:68-76
关键词	Tight sandstone gas Nano-CT Digital core Molecular diffusion Numerical simulation
ISSN号	1672-5107
DOI	10.1007/s12182-017-0210-1
英文摘要	Diffusion is an important mass transfer mode of tight sandstone gas. Since nano-pores are extensively developed in the interior of tight sandstone, a considerable body of research indicates that the type of diffusion is mainly molecular diffusion based on Fick's law. However, accurate modeling and understanding the physics of gas transport phenomena in nano-porous media is still a challenge for researchers and traditional investigation (analytical and experimental methods) have many limitations in studying the generic behavior. In this paper, we used Nano-CT to observe the pore structures of samples of the tight sandstone of western of Sichuan. Combined with advanced image processing technology, three-dimensional distributions of the nanometer-sized pores were reconstructed and a tight sandstone digital core model was built, as well the pore structure parameters were analyzed quantitatively. Based on the digital core model, the diffusion process of methane molecules from a higher concentration area to a lower concentration area was simulated by a finite volume method. Finally, the reservoir's concentration evolution was visualized and the intrinsic molecular diffusivity tensor which reflects the diffusion capabilities of this rock was calculated. Through comparisons, we found that our calculated result was in good agreement with other empirical results. This study provides a new research method for tight sandstone digital rock physics. It is a foundation for future tight sandstone gas percolation theory and numerical simulation research.
资助项目	State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation[PLN1506] ; Chinese National Natural Science Foundation[41502287] ; Chongqing Basic and Frontier Research Projects[CSTC2015JCYJBX0120] ; Chongqing City Social Undertakings and Livelihood Protection Science and Technology Innovation Special Project[CSTC2017SHMSA120001] ; Chongqing Land Bureau Science and Technology Planning Project[CQGT-KJ-2017026] ; Chongqing Land Bureau Science and Technology Planning Project[CQGT-KJ-2015044] ; Chongqing Land Bureau Science and Technology Planning Project[CQGT-KJ-2015018] ; Chongqing Land Bureau Science and Technology Planning Project[CQGT-KJ-2014040]
WOS研究方向	Energy & Fuels ; Engineering
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000426371900005
内容类型	期刊论文
源URL	[http://119.78.100.138/handle/2HOD01W0/6255]
专题	生态过程与重建研究中心综合办公室
通讯作者	Chen, Qiao; Tan, Yan-Hu
作者单位	1.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China 2.Southwest Petr Univ, State Key Lab Oil & Gas Reservoir Geol & Exploita, Chengdu 610500, Sichuan, Peoples R China 3.PetroChina, Oil & Gas Engn Res Inst, Jilin Oilfield Co, Jilin 138099, Jilin, Peoples R China 4.PetroChina Co Ltd, Shunan Gas Mine, Southwest Oil & Gas Field Branch Co, Luzhou 646300, Sichuan, Peoples R China
推荐引用方式 GB/T 7714	Zhu, Hong-Lin,Wang, Shou-Feng,Yin, Guo-Jun,et al. Study of the numerical simulation of tight sandstone gas molecular diffusion based on digital core technology[J]. PETROLEUM SCIENCE,2018,15(1):68-76.
APA	Zhu, Hong-Lin.,Wang, Shou-Feng.,Yin, Guo-Jun.,Chen, Qiao.,Xu, Feng-Lin.,...&Zhang, Kuo.(2018).Study of the numerical simulation of tight sandstone gas molecular diffusion based on digital core technology.PETROLEUM SCIENCE,15(1),68-76.
MLA	Zhu, Hong-Lin,et al."Study of the numerical simulation of tight sandstone gas molecular diffusion based on digital core technology".PETROLEUM SCIENCE 15.1(2018):68-76.