Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018WR023355 |
Settling and Mobilization of Sand-Fiber Proppants in a Deformable Fracture | |
Medina, Ricardo1; Detwiler, Russell L.1; Prioul, Romain2; Xu, Wenyue2; Elkhoury, Jean E.2 | |
2018-12-01 | |
发表期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2018 |
卷号 | 54期号:12页码:9964-9977 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | We investigated the response of a sand-fiber proppant suspension (17.7% 40/ 70 mesh sand and 0.4% polymeric fibers) flowing and settling inside a transparent deformable 15 x15-cm fracture subjected to an increasing applied normal stress,.. n. We quantified the solid distribution within the fracture and the evolution of the solid volume fraction,.., as.. n increased. The sand-fiber suspension formed a highly heterogeneous proppant pack with sand-fiber clumps surrounded by relatively solids-free regions, which was significantly different from the uniform solid distribution observed in settling experiments without fibers. As.. n increased from 0 to 88.5 kPa, the fracture aperture decreased by up to 85% and caused the sand-fiber clumps to act like pillars that supported the applied stress and prevented full fracture closure. At the end of the settling experiments, we simulated flowback by injecting solids-free carrier fluid while maintaining.. n = 88.5 kPa. Subsequent flow of solids-free fluid caused the mobilization of some solids but left the supporting pillars intact. We used a numerical model to simulate flow through the porous proppant pack and open regions of the fracture and found a correlation between.. and the shear rate,..., at locations of mobilized solids, which suggested a mobilization threshold:.. <.. mob and... >...mob. Additional simulations carried out in different heterogeneous proppant distributions showed that solid mobilization leads to the formation of highly conductive channels that significantly increase fracture permeability. Our results suggest that adding fibers to conventional sand proppants can lead to heterogeneous proppant distributions and increased fracture permeability. |
英文关键词 | hydraulic fracturing suspension flow fracture deformation preferential flow |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000456949300035 |
WOS关键词 | FLOW ; TRANSPORT ; RHEOLOGY ; SUSPENSIONS ; BEHAVIOR ; SIMULATIONS ; PACKINGS ; SPHERES ; SOLIDS ; FLUIDS |
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/21741 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Calif Irvine, Dept Civil & Environm Engn, Irvine, CA 92697 USA; 2.Schlumberger Doll Res Ctr, Cambridge, MA USA |
推荐引用方式 GB/T 7714 | Medina, Ricardo,Detwiler, Russell L.,Prioul, Romain,et al. Settling and Mobilization of Sand-Fiber Proppants in a Deformable Fracture[J]. WATER RESOURCES RESEARCH,2018,54(12):9964-9977. |
APA | Medina, Ricardo,Detwiler, Russell L.,Prioul, Romain,Xu, Wenyue,&Elkhoury, Jean E..(2018).Settling and Mobilization of Sand-Fiber Proppants in a Deformable Fracture.WATER RESOURCES RESEARCH,54(12),9964-9977. |
MLA | Medina, Ricardo,et al."Settling and Mobilization of Sand-Fiber Proppants in a Deformable Fracture".WATER RESOURCES RESEARCH 54.12(2018):9964-9977. |
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