Numerical Simulation of Gas and Water Flow Mechanism in Hydraulically Fractured Shale Gas Reservoirs | |
Shen WJ(沈伟军)![]() | |
Source Publication | JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
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2016 | |
Volume | 35Issue:APages:726-735 |
ISSN | 1875-5100 |
Abstract |
The problem of the fracturing water remaining in hydraulically fractured shale gas reservoirs has become one of the major concerns in terms of gas productivity and operating costs. The fracturing water retention is influenced by reservoir properties and production parameters, such as matrix porosity and permeability, fracture porosity and permeability, Langmuir pressure and volume, diffusion coefficient, shut-in time, drawdowns and injection rate. In this study, a horizontal well with six-stage hydraulicfracturing treatment was constructed to understand the water retention and gas production performance in shale gas reservoirs. Gas diffusion, gas adsorption/desorption and Darcy flow as well as non-Darcy flow were considered in this model. The process of water retention and gas production performance was analyzed, and the effects of reservoir and production properties on this problem were performed. The results show that only 34% of the fracturing water can flow back to the surface, most of which remains in shale formations to interfere with gas production. The increasing of matrix porosity, fracture porosity, Langmuir pressure and drawdowns will reduce water retention while water retention in shale matrix will increase with the increasing of matrix permeability and Langmuir volume, and consequently impact gas production. But the trapped water and gas rate increase with the higher fracture permeability. Furthermore, the diffusion coefficient, shut-in time and injection rate do not have a significant effect on water retention and gas productivity. These results can provide insights into a better understanding of gas and water flow in the shale gas reservoirs and the effects of reservoir and production parameters onwater retention and gas production. |
Keyword | Shale Gas Hydraulic Fractures Reservoir Properties Water Retention Gas Rate |
Subject Area | 渗流力学,油气田开发 |
DOI | 10.1016/j.jngse.2016.08.078 |
URL | 查看原文 |
Indexed By | SCI ; EI |
Language | 英语 |
WOS ID | WOS:000388543900066 |
WOS Keyword | Shale gas; Hydraulic fractures; Reservoir properties; Water retention; Gas rate |
WOS Research Area | Energy & Fuels ; Engineering |
WOS Subject | Energy & Fuels ; Engineering, Chemical |
Funding Organization | National Energy Technology Laboratory under U.S. Department of Energy Contract No. ESD14085 ; National Science and Technology Major Project of the Ministry of Science and Technology of China Project (NO. 50150503-12) |
Department | LMFS海洋土力学(LHO) |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://dspace.imech.ac.cn/handle/311007/59789 |
Collection | 流固耦合系统力学重点实验室 |
Corresponding Author | Shen WJ, Key Laboratory for Mechanics in Fluid Solid Coupling Systems, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China |
Recommended Citation GB/T 7714 | Shen WJ,Xu YM,Li XZ,et al. Numerical simulation of gas and water flow mechanism in hydraulically fractured shale gas reservoirs[J]. JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING,2016,35(A):726-735. |
APA | Shen WJ,Xu YM,Li XZ,Huang WG,Gu JR,&Shen WJ, Key Laboratory for Mechanics in Fluid Solid Coupling Systems, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China.(2016).Numerical Simulation of Gas and Water Flow Mechanism in Hydraulically Fractured Shale Gas Reservoirs.JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING,35(A),726-735. |
MLA | Shen WJ,et al."Numerical Simulation of Gas and Water Flow Mechanism in Hydraulically Fractured Shale Gas Reservoirs".JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING 35.A(2016):726-735. |
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