| Experimental investigation of CO2 flooding in tight oil reservoirs using CT scanning method | |
Yang L(杨柳)1; Kang H2; Lu XB(鲁晓兵)1 ; Tan XQ2; Gao J2
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| Source Publication | 4th ISRM Young Scholars Symposium on Rock Mechanics, YSS 2017 |
| 2017 | |
| Pages | 96-100 |
| Conference Name | 4th ISRM Young Scholars Symposium on Rock Mechanics, YSS 2017 |
| Conference Date | May 10, 2017 - May 13, 2017 |
| Conference Place | Jeju, Korea, Republic of |
| Abstract | Tight oil reservoirs are characterized by ultralow permeability, causing hydrocarbons to be trapped in tiny pores and hinder the crude oil flow. CO2injection technology has been paid more attention in low-permeability reservoirs. In this work, the long core experiments of CO2flooding are conducted to study the displacement pressure and enhanced oil recovery, and CT scanning method is used to obtain the oil saturation profiles along the samples. The results show that the reservoirs pressure increases initially and decreases afterwards during CO2miscible displacement. The final reservoirs pressure is still much larger than the initial state, suggesting high energy supplement efficiency of CO2miscible displacement. At the initial stage (20 min), the pressure increases gradually, but oil saturation does not change very much. The initial oil flow is related to oil expansion induced by oil injection. After 20 min, the oil saturation at the inlet falls quickly. The oil saturation begins to decrease uniformly in the whole range of sections until the displacement front breakthrough. The sections near the inlet and outlet has larger residual oil saturation. The research is significant for understanding the microscopic mechanism of CO2flooding and enhancing oil recovery in tight oil reservoirs. © 2017 by Korean Society for Rock Mechanics. |
| Keyword | Carbon dioxide Computerized tomography Crude oil Enhanced recovery Floods Low permeability reservoirs Oil well flooding Reservoirs (water) Rock mechanics Well flooding Displacement pressure Enhanced oil recovery Experimental investigations Long core experiments Microscopic mechanisms Miscible displacement Oil reservoirs Residual oil saturation |
| ISBN | 9791156103158 |
| Indexed By | EI |
| Language | 英语 |
| Document Type | 会议论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/78022 |
| Collection | 流固耦合系统力学重点实验室 |
| Affiliation | 1.Key Laboratory for Mechanics in Fluid Solid Coupling Systems, Institute of Mechanics, Chinese Academy of Sciences, Beijing, China; 2.State Key Laboratory of Enhanced Oil Recovery, Research Institute of Petroleum Exploration and Development, Beijing, China |
| Recommended Citation GB/T 7714 | Yang L,Kang H,Lu XB,et al. Experimental investigation of CO2 flooding in tight oil reservoirs using CT scanning method[C]4th ISRM Young Scholars Symposium on Rock Mechanics, YSS 2017,2017:96-100. |
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| File Name/Size | DocType | Version | Access | License | ||
| EiCpA049.pdf（1798KB） | 会议论文 | 开放获取 | CC BY-NC-SA | View Download | ||
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