Apparatus and methods for sponge coring

Details Apparatus and methods for sponge coring Apparatus and methods for sponge coring

E - Fixed Constructions

21

B

E21B 25/08 (2006.01) E21B 25/00 (2006.01) E21B 25/06 (2006.01)

Patent

CA 2429167

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.

Cette invention concerne un cylindre à parois absorbantes utilisé pour le carottage ainsi que s méthodes d'assemblage dudit cylindre et des techniques de carottage correspondantes. Le cylindre à parois absorbantes comprend un ensemble cylindre extérieur, un carottier fixer à la partie inférieure de cet ensemble extérieur et un ensemble cylindre intérieur. L'ensemble cylindre intérieur peut comprend de multiples sections tubulaires internes à revêtement absorbant. Cet ensemble cylindre intérieur peut renfermer une ou plusieurs chemises absorbantes faites d'une couche absorbante annulaire logée dans un manchon tubulaire. Plusieurs modes de réalisation sont proposés pour une chemise absorbante améliorée ainsi qu'un ensemble cylindre intérieur comprenant un ou plusieurs cylindres absorbants intégrés.

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