Does the double layer expansion mechanism contribute to the LSWI effect on hydrocarbon recovery from carbonate rocks?

Emad W. Al-Shalabi, Kamy Sepehrnoori, Mojdeh Delshad

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    40 Scopus citations

    Abstract

    Wettability alteration mechanism is still believed to be the main contributor to low salinity water Injection (LSWI) effect on oil recovery from carbonate rocks. This paper makes an attempt to explain the double electric layer expansion as a main mechanism and contributor to LSWI effect on oil recovery from carbonate rocks. The existence of double electric layer expansion mechanism in carbonate rocks is investigated through history matching recently published coreflood experiments using the wettability alteration option in the UTCHEM simulator. The history match results suggest that wettability alteration has negligible effect on water relative permeability. The negligible change in the water relative permeability is also consistent with the double electric layer expansion whereas the immobile water film thickness increases and hence the relative permeability remains constant. This paper provides a basis to develop a LSWI model to predict oil recovery from carbonate rocks.

    Original languageBritish English
    Title of host publicationSociety of Petroleum Engineers - SPE Reservoir Characterisation and Simulation Conference and Exhibition, RCSC 2013
    Subtitle of host publicationNew Approaches in Characterisation and Modelling of Complex Reservoirs
    Pages319-335
    Number of pages17
    StatePublished - 2013
    EventSPE Reservoir Characterisation and Simulation Conference and Exhibition: New Approaches in Characterisation and Modelling of Complex Reservoirs, RCSC 2013 - Abu Dhabi, United Arab Emirates
    Duration: 16 Sep 201318 Sep 2013

    Publication series

    NameSociety of Petroleum Engineers - SPE Reservoir Characterisation and Simulation Conference and Exhibition, RCSC 2013: New Approaches in Characterisation andModelling of Complex Reservoirs
    Volume1

    Conference

    ConferenceSPE Reservoir Characterisation and Simulation Conference and Exhibition: New Approaches in Characterisation and Modelling of Complex Reservoirs, RCSC 2013
    Country/TerritoryUnited Arab Emirates
    CityAbu Dhabi
    Period16/09/1318/09/13

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