Adelina Lv
University of New South Wales
Pore water pressurePorous mediumDigital image correlationGeologyMohr–Coulomb theoryBrittlenessDeformation (engineering)BoreholePermeability (earth sciences)Deformation bandsGeotechnical engineeringMaterials scienceCompactionConstitutive equationOverburden pressureShear stressSofteningMultiphysicsCoalMechanicsEffective stressStress (mechanics)
14Publications
4H-index
45Citations
Publications 14
Newest
Abstract null null Permeability is arguably the most important parameter in gas pre-drainage and production practices in coal mining and coal seam gas industries. In fractured coal seams, permeability can significantly vary both laterally and vertically. Knowing the vertical variation of permeability in relatively thick coal seams is important in optimizing inseam pre-drainage design in underground coal mining and improving reservoir management and completion design efficiency in the coal seam g...
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#1K.E. Elphick (QUT: Queensland University of Technology)
#2Adelina Lv (UNSW: University of New South Wales)H-Index: 4
Last. Christoph Schrank (QUT: Queensland University of Technology)H-Index: 14
view all 6 authors...
Abstract We examine whether bedding thickness or constitutive properties correlate with the spacing of equally spaced shear-enhanced compaction bands and compactional shear bands in Miocene sandstones of the Whakataki Formation, North Island, New Zealand. Quantitative spacing analysis reveals a positive correlation between bedding thickness and the spacing of strata-bound deformation bands, as is commonly observed for veins, joints, and normal faults. The observed spacing to thickness ratio (STR...
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#1Adelina Lv (UNSW: University of New South Wales)H-Index: 4
#2Mohammad Ali Aghighi (UNSW: University of New South Wales)H-Index: 9
Last. Hamid Roshan (UNSW: University of New South Wales)H-Index: 24
view all 4 authors...
The effective stress coefficient (ESC) is a key parameter in the linear poroelastic effective stress formulation. In fluid-bearing porous media, the effective stress is the difference between total stress and a fraction of the pore fluid pressure controlled by the ESC. The ESC is either measured in the laboratory or estimated by empirical models using field data. Among different techniques, sonic velocity measurements are widely used to estimate the ESC. The structure of coal, however, has some ...
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#1Mohammad Ali Aghighi (UNSW: University of New South Wales)H-Index: 9
#2Adelina Lv (UNSW: University of New South Wales)H-Index: 4
Last. Hamid Roshan (UNSW: University of New South Wales)H-Index: 24
view all 3 authors...
Abstract Modelling gas flow in sorptive porous materials (e.g. coal) offers significant challenges compared to that of non-sorptive porous media (e.g. conventional hydrocarbon reservoirs). Sorption processes in the matrix, gas flow in the fractures (cleats) and induced strains in the bulk of coal interact in a coupled manner, affecting the sorption, mechanical and hydraulic characteristics of the media. Despite extensive research on constitutive models that take into account the coupling process...
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#1Mohammed Abdul Qadeer Siddiqui (UNSW: University of New South Wales)H-Index: 8
#2Adelina Lv (UNSW: University of New South Wales)H-Index: 4
Last. Hamid Roshan (UNSW: University of New South Wales)H-Index: 24
view all 4 authors...
Abstract Despite significant advances in micro-scale measurement techniques for investigations in subsurface energy-bearing geomaterials, they have been unable to incorporate subsurface geomechanical conditions such as in-situ stresses in their applications. To overcome such lacking, we designed a novel high-pressure shear cell capable of measuring chemo-thermo-mechanical behaviour of actual (not synthetic) geomaterials by allowing application of critical stresses while simultaneously being expo...
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#1Xiao Chen (UNSW: University of New South Wales)H-Index: 3
#2Klaus Regenauer-Lieb (UNSW: University of New South Wales)H-Index: 39
Last. Hamid Roshan (UNSW: University of New South Wales)H-Index: 24
view all 5 authors...
Mechanical damage and resultant permeability evolution during compaction of highly porous reservoir rocks have strong implications on the extraction of mineral and energy resources. Laboratory Experiments can be performed to quantify this effect; however, the effect of size on these processes and the information they provide need to be evaluated before any conclusion can be drawn. As part of this study, conventional triaxial compression tests under different confining pressures were carried out ...
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#1Xiao Chen (UNSW: University of New South Wales)H-Index: 3
#2Hamid Roshan (UNSW: University of New South Wales)H-Index: 24
Last. Klaus Regenauer-Lieb (UNSW: University of New South Wales)H-Index: 39
view all 5 authors...
The formation of compaction bands in porous brittle rocks such as sandstones and carbonates has a significant impact on the localization mechanisms preceding earth and planetary surface instabilities such as earthquakes, landslides, and plate boundary faults. The micromechanics underpinning the dynamics of the formation of compaction bands and its effect on alteration of pore fluid pathways are not yet fully understood. The current study seeks to understand the mechanical properties of compactio...
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#2Christoph SchrankH-Index: 14
Last. Klaus Regenauer-LiebH-Index: 39
view all 4 authors...
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#1Adelina Lv (UNSW: University of New South Wales)H-Index: 4
#2Aghighi Mohammad Ali (UNSW: University of New South Wales)H-Index: 1
Last. Hamid Roshan (UNSW: University of New South Wales)H-Index: 24
view all 4 authors...
#1Hamid Roshan (UNSW: University of New South Wales)H-Index: 24
#2Adelina Lv (UNSW: University of New South Wales)H-Index: 4
Last. Klaus Regenauer-Lieb (UNSW: University of New South Wales)H-Index: 39
view all 5 authors...
A new generation of Hoek cells was designed and built to conduct triaxial testing on rock-like materials. The new design has the advantages of both conventional Hoek cells (e.g., minimal preparation and setup time) and conventional triaxial systems (e.g., on specimen radial deformation measurement), and it is capable of measuring the permeability at a controlled temperature. This quick release triaxial cell is robust, fast, and cost efficient and can be used for high pressure–high temperature ex...
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