IMECH-IR  > 流固耦合系统力学重点实验室
The effects of ion diffusion on imbibition oil recovery in salt-rich shale oil reservoirs
Yang L(杨柳); Zhang XH(张旭辉); Zhou T; Lu XB(鲁晓兵); Zhang CQ; Zhang KH
Corresponding AuthorZhang, Xuhui(zhangxuhui@imech.ac.cn)
Source PublicationJOURNAL OF GEOPHYSICS AND ENGINEERING
2019-06-01
Volume16Issue:3Pages:525-540
ISSN1742-2132
AbstractDuring the fracturing fluid imbibition into shale reservoirs, partial minerals could dissolve and diffuse into the fracturing fluid. However, few studies are conducted on the effects of ion diffusion on shale oil migration, especially in salt-rich shale oil reservoirs. The salt-rich shale oil reservoirs are regarded as the potential hot targets for shale oil exploration in China. In this study, a series of water imbibition and ion diffusion experiments are conducted on salt-rich shale samples. The nuclear magnetic resonance method is used to monitor the oil migration and demonstrate the effects of ion diffusion. The experimental results show that the salt-rich shale contains a large amount of halite, resulting in a much higher salt ion diffusion capacity than conventional shale (about 15-45 times higher). Salt ion diffusion can induce lots of pores, caves and fractures that can act as channels for oil migration. However, the dimensionless imbibition rate has a negative relationship with ion diffusion capacity, indicating that too many salt crystals cannot contribute to the oil production. The salt crystals dissolution may block matrix pores and generally reduce the oil migration rate, despite these new migration channels. This study can help understand the effects of fracturing fluid retention on oil production in salt-rich shale oil reservoirs
Keywordwater imbibition ion diffusion shale oil nuclear magnetic resonance
DOI10.1093/jge/gxz025
Indexed BySCI
Language英语
WOS IDWOS:000473766300004
WOS KeywordNUCLEAR-MAGNETIC-RESONANCE ; WATER IMBIBITION ; GAS SHALES ; MINERALOGY ; BASIN
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
Funding ProjectFoundation of the National Natural Science Foundation of China[11702296] ; Fundamental Research Funds for the Central Universities ; National Science and Technology Major Project of the Ministry of Science and Technology of China[2016ZX05046-003] ; Major National Science and Technology Projects of China[2017ZX05049003-005]
Funding OrganizationFoundation of the National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; National Science and Technology Major Project of the Ministry of Science and Technology of China ; Major National Science and Technology Projects of China
ClassificationQ3
Ranking1
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/79426
Collection流固耦合系统力学重点实验室
Recommended Citation
GB/T 7714
Yang L,Zhang XH,Zhou T,et al. The effects of ion diffusion on imbibition oil recovery in salt-rich shale oil reservoirs[J]. JOURNAL OF GEOPHYSICS AND ENGINEERING,2019,16(3):525-540.
APA 杨柳,张旭辉,Zhou T,鲁晓兵,Zhang CQ,&Zhang KH.(2019).The effects of ion diffusion on imbibition oil recovery in salt-rich shale oil reservoirs.JOURNAL OF GEOPHYSICS AND ENGINEERING,16(3),525-540.
MLA 杨柳,et al."The effects of ion diffusion on imbibition oil recovery in salt-rich shale oil reservoirs".JOURNAL OF GEOPHYSICS AND ENGINEERING 16.3(2019):525-540.
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