Show simple item record

dc.contributor.authorArif, M.
dc.contributor.authorBarifcani, Ahmed
dc.contributor.authorLebedev, Maxim
dc.contributor.authorIglauer, S.
dc.date.accessioned2017-01-30T11:25:00Z
dc.date.available2017-01-30T11:25:00Z
dc.date.created2016-05-12T19:30:16Z
dc.date.issued2016
dc.identifier.citationArif, M. and Barifcani, A. and Lebedev, M. and Iglauer, S. 2016. Structural trapping capacity of oil-wet caprock as a function of pressure, temperature and salinity. International Journal of Greenhouse Gas Control. 50: pp. 112-120.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/11480
dc.identifier.doi10.1016/j.ijggc.2016.04.024
dc.description.abstract

Wettability is a major parameter which significantly influences structural trapping capacities in CO2 geo-sequestration. In this context, the original wettability state of a caprock is of key importance, however, less attention has been given towards this aspect in the past. We thus evaluated the impact of caprock oil-wettability on storage potential; we used five mica substrates as representatives of caprock and modified their initial wettability to obtain different oil-wetness (0–118° water contact angle at ambient conditions), so that we were able to conduct a systematic study. Advancing and receding contact angles (θa and θr) were measured on all surfaces for wide ranges of pressure (0.1 MPa–20 MPa), temperature (308 K, 323 K and 343 K) and salinity (0 wt%–20 wt% NaCl). The results indicate that advancing and receding contact angles increase with pressure (when pressure increased from 0.1 MPa to 20 MPa at 343 K, θa increased from 0° to 67° for water-wet substrate and from 73° to 156° for oil-wet substrate), and salinity but decrease with temperature. Finally we predict CO2 column heights, which can be permanently stored beneath oil-wet caprocks. Clearly, the structural trapping capacity is significantly reduced in case of oil-wet caprock (when compared to water-wet caprock). We conclude that it is essential to evaluate CO2-wettability of caprocks to determine safe limits of operation for containment security.

dc.publisherElsevier
dc.titleStructural trapping capacity of oil-wet caprock as a function of pressure, temperature and salinity
dc.typeJournal Article
dcterms.source.volume50
dcterms.source.startPage112
dcterms.source.endPage120
dcterms.source.issn1750-5836
dcterms.source.titleInternational Journal of Greenhouse Gas Control
curtin.departmentSchool of Chemical and Petroleum Engineering
curtin.accessStatusFulltext not available


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record