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Buckling of drill string under the action of gravity and axial thrust
Luleå tekniska universitet.
Luleå tekniska universitet.
1993 (English)In: International Journal of Solids and Structures, ISSN 0020-7683, E-ISSN 1879-2146, Vol. 30, no 19, p. 2675-2691Article in journal (Refereed) Published
Abstract [en]

A number of different equilibrium helical buckling configurations for a tubing or drill string confined within a cylindrical casing or hole of larger radius and buckled under static compressive forces are determined. Our work is more general and informative than earlier work since the solutions relating the buckling load and the postbuckling configuration are given explicitly for the string of weight and at any inclined positions. A consideration of the state of transient string buckling when the string undergoes sudden change in the helix radius and might lose contact with the hole wall is also proposed.

Place, publisher, year, edition, pages
1993. Vol. 30, no 19, p. 2675-2691
National Category
Other Civil Engineering
Research subject
Mining and Rock Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-8036DOI: 10.1016/0020-7683(93)90106-HISI: A1993LU86600007Scopus ID: 2-s2.0-0027869069Local ID: 6799be20-ffd8-11dc-8441-000ea68e967bOAI: oai:DiVA.org:ltu-8036DiVA, id: diva2:980926
Note
Godkänd; 1993; 20080401 (cira)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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