The effect of layer pattern on flow properties through deep reservoir rocks

G. P. D. De Silva, M. S. A. Perera, P. G. Ranjith

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearch

Abstract

The geological storage of CO2 and the extraction of geothermal energy from deep saline aquifers are promising methods, of mitigating global warming and obtaining a valuable source of renewable energy. In such processes the porosity and permeability of the reservoir rock are the two governing factors. Porosity can be easily predicted and is conventionally used to identify permeability properties. However, such identification is inaccurate, because the presence of irregularities such as bedding and authigenic quartz significantly reduces the permeability of even highly porous rock. This paper investigates the effect of bedding and the presence of authigenic quartz on brine permeability in sandstone using two types of sandstones with similar porosities, Warwick white (WWS) and Warwick golden (WGS), from the Queensland Basin, Australia. Permeability tests were conducted on 38mm diameter and 150mm long sandstone samples for a range of injection pressures (4 - 7MPa) under 10 MPa confining pressure at 30 °C temperature, using a highly precise core flooding apparatus. The experimental data provide important data for the geological storage of CO2 and the production of geothermal energy from deep saline aquifers.

Original languageEnglish
Title of host publication8th Asian Rock Mechanics Symposium (ARMS 2014)
Subtitle of host publicationThe ISRM International Symposium, Sapporo, Japan, 14-16 October 2014 [proceedings]
EditorsKatsuhiko Kaneko, Nariaki Kodama, Norikazu Shimiz
PublisherInternational Society for Rock Mechanics
Pages2671-2679
Number of pages9
ISBN (Electronic)9784907430030
Publication statusPublished - 2014
EventAsian Rock Mechanics Symposium 2014 - Sapporo, Japan
Duration: 14 Oct 201416 Oct 2014
Conference number: 8th

Conference

ConferenceAsian Rock Mechanics Symposium 2014
Abbreviated titleARMS 2014
CountryJapan
CitySapporo
Period14/10/1416/10/14

Keywords

  • Brine permeability
  • Core flooding
  • Saline aquifer
  • Sandstone

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