A new efficiency criterion for acid fracturing in carbonate reservoirs

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

    Abstract

    The success of a stimulation technique is often measured by its stimulation ratio. This paper, however, presents a novel way of calculating the value that can be added from acid fracturing. A model predicting the effect of acid fracturing in carbonate reservoirs has been developed. The model accounts for fracture geometry and for acid fracturing job specifications. Acid fracturing is typically conducted in carbonate reservoirs, which make up approximately 70% of the worldwide hydrocarbon reserves. Acid Fracturing is a complex process depending on multiple factors which are different in nature, making mathematical models unreliable. Due to the stochastic process inherent in acid fracturing, modeling has been met with difficulty, especially in calculating conductivity. The modeling data analysis includes the sensitivity study with respect to fracture length and fracture width, as well as the importance of efficient acid transport. The post-stimulation production data is used to calculate the cumulative production parameter which is the cumulative production over a given period of time. It can also be compared to the production of an un-stimulated case. The cumulative production parameter offers a unique way to calculate acid fracture value. This parameter gives a tangible value which translates to production over time. More importantly, the proposed model allows fractures from different reservoirs to be accurately compared, helping production engineers make better decisions and estimate the acid treatment efficiency.

    Original languageBritish English
    Title of host publicationSociety of Petroleum Engineers - SPE/IATMI Asia Pacific Oil and Gas Conference and Exhibition 2009, APOGCE 09
    Pages502-512
    Number of pages11
    DOIs
    StatePublished - 1 Jan 2009
    EventSPE/IATMI Asia Pacific Oil and Gas Conference and Exhibition 2009, APOGCE 09 - Jakarta, Indonesia
    Duration: 4 Aug 20096 Aug 2009

    Publication series

    NameSociety of Petroleum Engineers - SPE/IATMI Asia Pacific Oil and Gas Conference and Exhibition 2009, APOGCE 09
    Volume2

    Conference

    ConferenceSPE/IATMI Asia Pacific Oil and Gas Conference and Exhibition 2009, APOGCE 09
    Country/TerritoryIndonesia
    CityJakarta
    Period4/08/096/08/09

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