The Characteristics of Oil Occurrence and Long-Distance Transportation due to Injected Fluid in Tight Oil Reservoirs

doi:10.1155/2019/2707616

IMECH-IR > 流固耦合系统力学重点实验室

	The Characteristics of Oil Occurrence and Long-Distance Transportation due to Injected Fluid in Tight Oil Reservoirs
	Yang L(杨柳)1; Yang J 1; Gao J 2; Zhang XH(张旭辉)3
通讯作者	Yang, Jun(yjlr@163.com)
发表期刊	ADVANCES IN POLYMER TECHNOLOGY
	2019-12-01
卷号	2019 页码:14
ISSN	0730-6679
摘要	In tight oil reservoirs, the injected fluid needs to travel a long distance to expel oil from the micro/nano-size pores to natural fractures or man-made fractures. The flow characteristics of injected fluid are not known well due to the long distance displacement and complex pore structure. In this study, the tight reservoir samples are from typical tight oilfield of China and the oil distribution characteristics are studied based on mineral composition, physical properties and pore size distribution. The long core displacement experiment is conducted based on injection of water, N-2, and CO2, which aims to study the individual flooding feasibility. The results show that the oil mainly distributes in the form of spots and accumulates in the micro/nano-pores. Both oil spots and clay minerals have associated characteristics. The microfractures are not the storage space for oil spots, but can connect the oil spots to improve the mobility of the crude oil. In addition, the oil can achieve long distance migration under the injection of water, N-2, and CO2, which presents different pressure distribution characteristics. The reservoir pressure of water flooding decreases first and increases later with displacement time. The reservoir pressure of N-2 flooding rises gradually over displacement time. The reservoir pressure of CO2 flooding increases first and decreases over displacement time. In contrast to water flooding, N-2, and CO2 can increase the reservoir energy, which contributes to tight oil production. In comparison, CO2 has better performances than N-2 in terms of oil displacement efficiency. The study contributes to understanding the oil distribution characteristics and provides the guidance for field trials using different flooding techniques.
DOI	10.1155/2019/2707616
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000503225700001
关键词[WOS]	IMBIBITION CHARACTERISTICS ; WATER IMBIBITION ; SHALE ; ROCK ; PERMEABILITY ; PARAMETERS ; RECOVERY ; MODEL ; FLOW
WOS研究方向	Engineering ; Polymer Science
WOS类目	Engineering, Chemical ; Polymer Science
资助项目	National Key Research and Development Program[2018YFC0603705] ; National Key Research and Development Program[2016YFC0600901] ; National Natural Science Foundation of China[11702296] ; Fundamental Research Funds for the Central Universities
项目资助者	National Key Research and Development Program ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities
论文分区	二类
力学所作者排名	4
RpAuthor	Yang, Jun
引用统计
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/81255
专题	流固耦合系统力学重点实验室
作者单位	1.China Univ Min & Technol Beijing, State Key Lab Geomech & Deep Underground Engn, Beijing 100083, Peoples R China; 2.Res Inst Petr Explorat & Dev, Beijing 100083, Peoples R China; 3.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Yang L,Yang J,Gao J,et al. The Characteristics of Oil Occurrence and Long-Distance Transportation due to Injected Fluid in Tight Oil Reservoirs[J]. ADVANCES IN POLYMER TECHNOLOGY,2019,2019:14.
APA	杨柳,Yang J,Gao J,&张旭辉.(2019).The Characteristics of Oil Occurrence and Long-Distance Transportation due to Injected Fluid in Tight Oil Reservoirs.ADVANCES IN POLYMER TECHNOLOGY,2019,14.
MLA	杨柳,et al."The Characteristics of Oil Occurrence and Long-Distance Transportation due to Injected Fluid in Tight Oil Reservoirs".ADVANCES IN POLYMER TECHNOLOGY 2019(2019):14.

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