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Title:
APPARATUS AND METHODS FOR SPONGE CORING
Document Type and Number:
WIPO Patent Application WO2002040824
Kind Code:
A3
Abstract:
A sponge core barrel for use in performing sponge coring and methods of assembling the sponge core barrel, as well as methods of performing sponge coring. The sponge corre barrel includes an outer barrel assembly, a core bit secured to a lower end thereof, and an inner barrel assembly disposed therein. The inner barrel assembly may comprise multiple, sponge-lined inner tube sections. One or more sponge liners comprising an annular sponge layer secured within a tubular sleeve may be disposed within the inner barrel assembly. The present invention encompasses a number of embodiments of an improved sponge liner, as well as an inner barrel assembly comprised of one or more integrated sponge barrels.

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Inventors:
VAN PUYMBROECK LUC
WILSON BOB T
STIBBE HOLGER
HATLOY HALLVARD S
Application Number:
PCT/US2001/043768
Publication Date:
February 06, 2003
Filing Date:
November 14, 2001
Export Citation:
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Assignee:
BAKER HUGHES INC (US)
International Classes:
E21B25/00; E21B25/06; E21B25/08; (IPC1-7): E21B25/08; E21B25/06
Foreign References:
US4312414A1982-01-26
US5042598A1991-08-27
US5255751A1993-10-26
GB2000824A1979-01-17
US4598777A1986-07-08
US4479557A1984-10-30
US4502553A1985-03-05
US4787983A1988-11-29
US3511324A1970-05-12
US4566545A1986-01-28
Other References:
See also references of EP 1341989A2
Download PDF:
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