Mass transfer model of fracture-controlled matrix unit: Model derivation and experimental verification based on fractal theory and micro-CT scanning technology
文献类型：期刊论文
| 作者 | Liu, Qiang1; Song, Rui1; Liu, Jianjun1,5; Pei, Guihong4; Lei, Yun2,3 |
| 刊名 | ENERGY REPORTS
 |
| 出版日期 | 2020-11-01 |
| 卷号 | 6页码:3067-3079 |
| 关键词 | Fractured low-permeability reservoir Imbibition oil recovery Fractal theory Mass transfer model Micro-CT Fracture-controlled matrix unit |
| ISSN号 | 2352-4847 |
| DOI | 10.1016/j.egyr.2020.11.016 |
| 英文摘要 | Imbibition oil recovery in low permeability fractured reservoirs has been acknowledged as an efficient method to enhance oil recovery. However, the effects of the complex pore structure and the hydraulic pressure in fracture on the fluids transport were not considered comprehensively in any model at pore scale in literature. This paper aims to study the microscopic mechanism of the imbibition process and define the concept of an imbibition unit using mathematical methods. Based on fractal theory, the improved effective porosity, permeability model, mass transfer model, and the fracture control range model of the matrix are derived, considering the effects of surface roughness, heterogeneity of the pore structure, irreducible water and the hydraulic pressure in fracture. The required parameters for model calculation are obtained by the three-dimensional reconstructed CT images, density test experiment and wetting test experiment. Good agreements are achieved between the result calculated by the proposed model and that of the experiment. The sensitivity analysis of the mass transfer model is then conducted and discussed. The results indicate that the cumulative oil recovery during the imbibition process is mainly controlled by the surface fractal dimension (D-s), the pore pressure gradient (Delta p), the pore fractal dimension (D-lambda), the hydraulic pressure in the fracture (P-h), and the tortuosity of the capillary (tau). And Delta p, D-lambda, and P-h shows a positive relationship with the cumulative oil recovery, while D-s and tau shows a negative influence. (C) 2020 The Authors. Published by Elsevier Ltd. |
| 资助项目 | National Science and Technology Major Project of China[2017ZX05013006-002] ; National Natural Science Foundation of China[51909225] ; Science and Technology Program of Hubei Provincial Education Department, China[2018375] |
| WOS研究方向 | Energy & Fuels |
| 语种 | 英语 |
| WOS记录号 | WOS:000602717100010 |
| 出版者 | ELSEVIER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/25408]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Song, Rui; Liu, Jianjun |
| 作者单位 | 1.Southwest Petr Univ, Sch Geosci & Technol, Chengdu 610500, Peoples R China 2.China Coal Technol & Engn Grp Corp, Shenyang Res Inst, Shenyang 113122, Peoples R China 3.State Key Lab Coal Mine Safety Technol, Shenyang 113122, Peoples R China 4.Hubei Business Coll, Sch Architectural Econ & Engn Management, Wuhan 430074, Peoples R China 5.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Qiang,Song, Rui,Liu, Jianjun,et al. Mass transfer model of fracture-controlled matrix unit: Model derivation and experimental verification based on fractal theory and micro-CT scanning technology[J]. ENERGY REPORTS,2020,6:3067-3079. |
| APA | Liu, Qiang,Song, Rui,Liu, Jianjun,Pei, Guihong,&Lei, Yun.(2020).Mass transfer model of fracture-controlled matrix unit: Model derivation and experimental verification based on fractal theory and micro-CT scanning technology.ENERGY REPORTS,6,3067-3079. |
| MLA | Liu, Qiang,et al."Mass transfer model of fracture-controlled matrix unit: Model derivation and experimental verification based on fractal theory and micro-CT scanning technology".ENERGY REPORTS 6(2020):3067-3079. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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