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 J1; Gao J2; Zhang XH(张旭辉)3
Corresponding AuthorYang, Jun(yjlr@163.com)
Source PublicationADVANCES IN POLYMER TECHNOLOGY
2019-12-01
Volume2019Pages:14
ISSN0730-6679
AbstractIn 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.
DOI10.1155/2019/2707616
Indexed BySCI ; EI
Language英语
WOS IDWOS:000503225700001
WOS KeywordIMBIBITION CHARACTERISTICS ; WATER IMBIBITION ; SHALE ; ROCK ; PERMEABILITY ; PARAMETERS ; RECOVERY ; MODEL ; FLOW
WOS Research AreaEngineering ; Polymer Science
WOS SubjectEngineering, Chemical ; Polymer Science
Funding ProjectNational 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
Funding OrganizationNational Key Research and Development Program ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities
Classification二类
Ranking4
ContributorYang, Jun
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/81255
Collection流固耦合系统力学重点实验室
Affiliation1.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
Recommended Citation
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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