Field application of engineered water injection in carbonate reservoirs under permeability channeling and gravity underride conditions

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    6 Scopus citations

    Abstract

    This paper investigates field-scale predictions of engineered water injection (EWI) technology in the secondary and tertiary injection modes. Three synthetic 5-spot reservoir models were considered: homogeneous reservoir, heterogeneous reservoir with permeability channeling, and heterogeneous reservoir with gravity underride. The predictions were conducted by upscaling recently history matched coreflood experiments. More so, sensitivity analysis and volumetric sweep efficiency estimation for all the three reservoir models using both tracer and fractional flow methods were investigated. The results showed that the EWI in the secondary mode outperformed other injection techniques (secondary formation water injection (FWI) and tertiary EWI) in all the three reservoir models. Also, the best volumetric sweep efficiency was achieved for the homogeneous reservoir model, followed by the channeling model and then the gravity underride model. Based on the EWI technique interpreted through geochemistry, it is believed that the main reason behind the incremental oil recovery is wettability alteration. This study gives more insight into understanding EWI technology through which field-scale developments can be performed with more certainty and lower risk.

    Original languageBritish English
    DOIs
    StatePublished - 2018
    EventSPE International Conference and Exhibition on Formation Damage Control 2018 - Lafayette, United States
    Duration: 7 Feb 20189 Feb 2018

    Conference

    ConferenceSPE International Conference and Exhibition on Formation Damage Control 2018
    Country/TerritoryUnited States
    CityLafayette
    Period7/02/189/02/18

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