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DOI | 10.1029/2019WR026581 |
An Alternative BEM for Simulating the Flow Behavior of a Leaky Confined Fractured Aquifer With the Use of the Semianalytical Approach | |
Luo, Wanjing1; Wang, Junlei2; Wang, Lei3; Zhou, Y.4 | |
2020-05-01 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2020 |
卷号 | 56期号:5 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; Scotland |
英文摘要 | This study developed an alternative boundary element method (BEM) to simulate the transient flow behavior of groundwater induced by well extraction in a confined fractured aquifer containing a network of discrete or connected fractures. The matrix flow, network-fracture flow, and matrix-fracture fluid exchange were considered. The aquifer was treated as a heterogeneous whole that consisted of fracture and matrix blocks with locally homogeneous hydraulic properties. The fractures were explicitly represented to be of true finite volume rather than nonrepresentational line sources. A semianalytical solution was developed based on the theory of a BEM in the Laplace transform domain, but the analytical Green's function was used for the bounded domain rather than the free-space Green's function in a conventional BEM. Case studies were presented in order to investigate the flow exchange behavior between the matrix and fractures and the corresponding transient drawdown response. The results showed that (1) exchange flux distribution calculated with the classical infinitesimal fracture model was consistent with the difference of the normal drawdown derivative values on both sides of the fracture body in our model. (2) When the well was in the matrix, the fractures acted as both highly conductive conduits and leaky faults, and the drawdown derivative behaviors resembled the characteristics of a dual-porosity reservoir model. (3) When the well was in the network fracture and when the volume of fracture was of the same order of magnitude as the matrix, the drawdown derivative might exhibit the look-alike behavior of a dual-porosity model. |
英文关键词 | boundary element method continuously confined fractured aquifer discretely confined fractured aquifer Green' s function transient flow behavior |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000537736400011 |
WOS关键词 | UNCONFINED AQUIFER ; LAPLACE-TRANSFORM ; HORIZONTAL WELLS ; FLUID-FLOW ; MODEL ; TRANSPORT ; RESERVOIR ; NETWORK ; SYSTEM |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/280671 |
专题 | 资源环境科学 |
作者单位 | 1.China Univ Geosci, Beijing, Peoples R China; 2.PetroChina Res Inst Petr Explorat & Dev, Beijing, Peoples R China; 3.China Univ Geosci, Wuhan, Peoples R China; 4.Univ Aberdeen, Aberdeen, Scotland |
推荐引用方式 GB/T 7714 | Luo, Wanjing,Wang, Junlei,Wang, Lei,et al. An Alternative BEM for Simulating the Flow Behavior of a Leaky Confined Fractured Aquifer With the Use of the Semianalytical Approach[J]. WATER RESOURCES RESEARCH,2020,56(5). |
APA | Luo, Wanjing,Wang, Junlei,Wang, Lei,&Zhou, Y..(2020).An Alternative BEM for Simulating the Flow Behavior of a Leaky Confined Fractured Aquifer With the Use of the Semianalytical Approach.WATER RESOURCES RESEARCH,56(5). |
MLA | Luo, Wanjing,et al."An Alternative BEM for Simulating the Flow Behavior of a Leaky Confined Fractured Aquifer With the Use of the Semianalytical Approach".WATER RESOURCES RESEARCH 56.5(2020). |
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