Core-based horizontal or highly inclined well stability analysis for unconsolidated formations

Nobuo Morita, C. K. Ross

    研究成果: Conference contribution

    3 引用 (Scopus)

    抜粋

    The prediction of a safe mud weight is important when drilling highly inclined or horizontal wells through permeable, poorly consolidated formations. If the mud weight used to drill these types of wells is too high, differential sticking of the drill string will occur. If the mud weight is too low, it is possible that the well bore will collapse. The standard linear elasticity borehole stability analysis methods used by many in industry predicts an unnecessarily high mud weight to prevent borehole collapse,while the safe mud weight is significantly lower. This paper describes a new core-based well stability analysis for horizontal or highly inclined wells in weak formations. New procedures to measure core strength and deformation and the numerical procedure to calculate the well stability for a highly non-linear formation are discussed. Field data and experiences are also included to validate the non-linear borehole stability analysis.

    元の言語English
    ホスト出版物のタイトルProceedings - SPE Annual Technical Conference and Exhibition
    編集者 Anon
    出版場所Richardson, TX, United States
    出版者Publ by Society of Petroleum Engineers (SPE)
    ページ187-200
    ページ数14
    Delta
    出版物ステータスPublished - 1993
    イベントProceedings of the SPE Annual Technical Conference and Exhibition. Part 2(of 5) - Houston, TX, USA
    継続期間: 1993 10 31993 10 6

    Other

    OtherProceedings of the SPE Annual Technical Conference and Exhibition. Part 2(of 5)
    Houston, TX, USA
    期間93/10/393/10/6

    ASJC Scopus subject areas

    • Geology
    • Geotechnical Engineering and Engineering Geology

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  • これを引用

    Morita, N., & Ross, C. K. (1993). Core-based horizontal or highly inclined well stability analysis for unconsolidated formations. : Anon (版), Proceedings - SPE Annual Technical Conference and Exhibition (巻 Delta, pp. 187-200). Publ by Society of Petroleum Engineers (SPE).