Mechanisms of Mass Exchange Between Light Oiland Petroleum Gas in Low-Permeability Reservoir Development Process

P. A. Gushchinu, A. N. Cheremisin, N. G. Glavnov, P. M. Zobort, N. A. Svarovskaya, V. N. Khlebnikov

    Research output: Contribution to journalArticlepeer-review

    Abstract

    It is shown that associated petroleum gas (APG) and the product of intrastratal transformation of air (by high-pressure air injection technology) are suitable for oil displacement from low-permeability, high-temperature light oil reservoirs. It was found that APG and air are effective gaseous agents miscible with oil, which are similar in oil-displacing properties. The minimum miscibility pressure (MMP) determination data are presented for an Upper Jurassic oil-APG system. The miscibility in the oil-APG system was achieved by the multicontact mechanism of interaction between oil and enriched gas. A new method is proposed for graphical determination of MMP as a function of gas breakthrough due to pressure, and a method for enhancing gas impact efficiency and for achieving miscibility at a pressure below the MMP, which consists in injection of a liquefied gas prefringe or a wide fraction of hydrocarbons, is validated.

    Original languageEnglish
    Pages (from-to)457-466
    Number of pages10
    JournalChemistry and Technology of Fuels and Oils
    Volume54
    Issue number4
    DOIs
    Publication statusPublished - 1 Sep 2018

    Keywords

    • air injection
    • gas impact
    • light oil
    • low-permeability reservoir

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