Safety of casing shoe test and casing shoe integrity after testing

N. Morita, G. F. Fuh, P. A. Boyd

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

    4 Citations (Scopus)

    Abstract

    It is desirable to extend a fracture as far as possible during a casing shoe test to gather data for fracture gradient determination. However, this practice may result in a lost circulation occurrence or reduction of casing shoe strength due to induced fracture. Hence, the common field practice is to stop the casing shoe test prematurely just to ensure the casing shoe strength. This paper answers drilling engineering concerns regarding: (1) circumstances of a lost circulation event during a casing shoe test and how extensively a fracture propagates; (2) how much information can be obtained as a function of the amount of injected drilling fluid; and (3) expected casing shoe integrity following testing. Laboratory data and a numerical model are used to study the phenomena which occur during casing shoe tests. A guideline of safe casing shoe tests is suggested.

    Original languageEnglish
    Title of host publicationProceedings - SPE Annual Technical Conference and Exhibition
    Place of PublicationRichardson, TX, United States
    PublisherPubl by Soc of Petroleum Engineers of AIME
    Pages229-243
    Number of pages15
    VolumeDelta
    Publication statusPublished - 1991
    EventProceedings of the 1991 SPE Annual Technical Conference and Exhibition -
    Duration: 1991 Oct 61991 Oct 9

    Other

    OtherProceedings of the 1991 SPE Annual Technical Conference and Exhibition
    Period91/10/691/10/9

    ASJC Scopus subject areas

    • Geology
    • Geotechnical Engineering and Engineering Geology

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  • Cite this

    Morita, N., Fuh, G. F., & Boyd, P. A. (1991). Safety of casing shoe test and casing shoe integrity after testing. In Proceedings - SPE Annual Technical Conference and Exhibition (Vol. Delta, pp. 229-243). Publ by Soc of Petroleum Engineers of AIME.