| 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
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| 通讯作者 | Zhang, Xuhui(zhangxuhui@imech.ac.cn)
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| 发表期刊 | JOURNAL OF GEOPHYSICS AND ENGINEERING
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| 2019-06-01
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| 卷号 | 16期号:3页码:525-540 |
| ISSN | 1742-2132
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| 摘要 | During 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 |
| 关键词 | water imbibition
ion diffusion
shale oil
nuclear magnetic resonance
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| DOI | 10.1093/jge/gxz025
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| 收录类别 | SCI
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| 语种 | 英语
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| WOS记录号 | WOS:000473766300004
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| 关键词[WOS] | NUCLEAR-MAGNETIC-RESONANCE
; WATER IMBIBITION
; GAS SHALES
; MINERALOGY
; BASIN
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| WOS研究方向 | Geochemistry & Geophysics
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| WOS类目 | Geochemistry & Geophysics
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| 资助项目 | Foundation 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]
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| 项目资助者 | Foundation 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
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| 论文分区 | Q3
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| 力学所作者排名 | 1
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| RpAuthor | Zhang, Xuhui
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://dspace.imech.ac.cn/handle/311007/79425
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| 专题 | 流固耦合系统力学重点实验室
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推荐引用方式
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.
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| 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.
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| 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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