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An experimental study of two-phase flow behaviour through pipes and hydraulically-fractured rock specimens
Wanniarachchi, W. A. M.1; Ranjith, P. G.1; Perera, M. S. A.1,2; Rathnaweera, T. D.1; Zhang, C.1; Zhang, D. C.1; Li, Xiao3; Li, Lihui4
2019-04-01
Source PublicationEXPERIMENTAL THERMAL AND FLUID SCIENCE
ISSN0894-1777
Volume102Pages:325-341
AbstractThe use of foam-based fracturing fluids for hydraulic fracturing has been identified as a promising technique to extract unconventional natural gases. However, lack of knowledge of foam properties and the two-phase flow behaviour of foam under high pressure makes it challenging to use in field conditions. Therefore, this comprehensive study was conducted to investigate (1) the properties and flow behaviour of foams, under relatively high-pressure (7 MPa) conditions using a newly-developed high-pressure viewing window and (2) two-phase flow behaviour through fractured rock using the high-pressure triaxial test apparatus. Fracture permeability tests were conducted for a series of confining and injection pressures, to evaluate the relative permeability coefficients. The experimental results show that foam flow can have bubble, plug, slug or disperse flow patterns, based on the gas flow rate, at a constant pressure. Moreover, the results show that, at pressures above 1 MPa, the foam flow is almost homogeneous with a fine texture, which is favourable for proppant transport. The findings of this study reveal that, during foam injection into a fractured rock mass under two-phase conditions, the nitrogen phase dominates the flow rate while having higher relative permeability coefficients than the water phase, irrespective of the confining pressure.
KeywordFoam Two-phase flow Single-phase flow Relative permeability Flow pattern Foam texture
DOI10.1016/j.expthermflusci.2018.12.013
WOS KeywordPOROUS-MEDIA ; FOAM FLOW ; PERMEABILITY ; GAS ; CO2 ; PRESSURE ; STRESS ; RESERVOIRS ; SINGLE ; IMPACT
Language英语
WOS Research AreaThermodynamics ; Engineering ; Physics
WOS SubjectThermodynamics ; Engineering, Mechanical ; Physics, Fluids & Plasmas
WOS IDWOS:000457667800028
PublisherELSEVIER SCIENCE INC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/90552
Collection页岩气与地质工程院重点实验室
Corresponding AuthorRanjith, P. G.
Affiliation1.Monash Univ, Deep Earth Energy Lab, Dept Civil Engn, Bldg 60, Melbourne, Vic 3800, Australia
2.Univ Melbourne, Dept Infrastruct Engn, Bldg 175, Melbourne, Vic, Australia
3.Chinese Acad Sci, Key Lab Shale Gas & Geoengn, Inst Geol & Geophys, Beijing, Peoples R China
4.Univ Chinese Acad Sci, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Wanniarachchi, W. A. M.,Ranjith, P. G.,Perera, M. S. A.,et al. An experimental study of two-phase flow behaviour through pipes and hydraulically-fractured rock specimens[J]. EXPERIMENTAL THERMAL AND FLUID SCIENCE,2019,102:325-341.
APA Wanniarachchi, W. A. M..,Ranjith, P. G..,Perera, M. S. A..,Rathnaweera, T. D..,Zhang, C..,...&Li, Lihui.(2019).An experimental study of two-phase flow behaviour through pipes and hydraulically-fractured rock specimens.EXPERIMENTAL THERMAL AND FLUID SCIENCE,102,325-341.
MLA Wanniarachchi, W. A. M.,et al."An experimental study of two-phase flow behaviour through pipes and hydraulically-fractured rock specimens".EXPERIMENTAL THERMAL AND FLUID SCIENCE 102(2019):325-341.
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