One trip cemented expandable monobore liner system and method

Details One trip cemented expandable monobore liner system and method One trip cemented expandable monobore liner system and method

E - Fixed Constructions

21

B

E21B 43/10 (2006.01) E21B 33/14 (2006.01)

Patent

CA 2597548

An apparatus to protect the mounting area (202) of casing and a locating profile (209) and optionally a sliding sleeve valve (200) and a flow path fromthe outside of the valve to the annulus when subsequent attachment of an expanded liner (218) is intended and the expanded liner is to be cemented in place. A barrier sleeve (204) , nose (207) , and outer sleeve (210) define a sealed cavity having a loose incompressible material (208) inside that covers the mounting location on the casing. A locating profile and an optional sliding sleeve valve and a flow path from the outside of the valve to the annulus can be provided. The cementing of the casing takes place through the barrier sleeve. After the cementing, the sleeve and nose are drilled out and the incompressible material is removed to the surface with the drill cuttings.

L'invention concerne un appareil destiné à protéger la zone de montage (202) de gainage et un profil de positionnement (209) et éventuellement une vanne à manchon coulissant (200) et un chemin d'écoulement de l'extérieur de la vanne en direction de l'annulaire lorsque l'attachement subséquent d'un chemisage expansé (218) est prévu et doit être cimenté en place. Un manchon de séparation (204), un nez (207), et un manchon externe (210) définissent une cavité fermée contenant un matériau incompressible en vrac (208) qui recouvre l'emplacement de montage sur le gainage. On peut prévoir un profil de positionnement et une éventuelle vanne à manchon coulissant ainsi qu'un chemin d'écoulement de l'extérieur de la vanne en direction de l'annulaire. La cimentation du gainage intervient par le biais du manchon de séparation. Après la cimentation, le manchon et le nez peuvent être retirés et le matériau incompressible est évacué à la surface avec les déblais de forage.

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