Journal article

Laboratory evaluation of flow properties of Niutitang shale at reservoir conditions

D Zhang, PG Ranjith, MSA Perera, G Ma

Marine and Petroleum Geology | Elsevier | Published : 2020

Abstract

Absolute and water saturation dependent gas flow under reservoir conditions is important for the exploration of deep energy resources. Steady-state and various unsteady-state argon permeability tests were conducted on dry Niutitang shale during the confinement loading and unloading cycles, then different gases were used for steady-state permeability tests at the final confinement of 20 MPa. Permeability decreased by 36% with the confinement increasing from 5 MPa to 60 MPa, and around 66% of the permeability reductions was recovered after the unloading cycles. The apparent steady-state permeabilities were 38% higher than those derived by unsteady-state methods due to the enhanced slip flow. T..

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University of Melbourne Researchers