Calculation of well productivity in a reservoir simulator (II)

G. Chen, D. H. Tehrani, J. M. Peden

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    Conventional simulators calculate the well productivity using Peaceman's equation for equivalent block radius and the well block pressure. This is generally acceptable for most vertical and horizontal wells. However, no formulation is available for slanted wells. Even for vertical and horizontal wells in which block aspect ratios are far from unity or where the well completion interval is short or the well is located close to a reservoir boundary or other wells, the existing formulations can give erroneous answers. In our previous paper, a novel method was introduced for calculating very accurately the productivity of wells of any deviation (0-90°) for a homogeneous reservoir. In this paper, we present a more general solution for general well position and applicable to multiple wells and heterogeneous reservoirs. A novel method is presented to convert the heterogeneous model to an anisotropic but uniform permeability model before applying the new analytical technique, in conjunction with a numerical simulator. The analytical model developed for this purpose is coupled with a numerical simulator to produce the necessary parameters needs for simulation of well performance in a conventional simulator. The results will have a wide field application for horizontal, vertical and deviated wells.

    Original languageEnglish
    Title of host publicationProceedings of the International Meeting on Petroleum Engineering
    Pages441-449
    Number of pages9
    Volume1
    Publication statusPublished - 1995
    EventProceedings of the International Meeting on Petroleum Engineering. Part 1 (of 2) - Beijing, China
    Duration: 14 Nov 199517 Nov 1995

    Conference

    ConferenceProceedings of the International Meeting on Petroleum Engineering. Part 1 (of 2)
    CityBeijing, China
    Period14/11/9517/11/95

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