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) E21B 34/14 (2006.01)

Patent

CA 2597564

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 from the 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 .

La présente invention concerne un appareil pour protéger la zone de montage (202) de tubage et un profil de positionnement (209) et facultativement une soupape à manchon coulissant (200) et un passage d~écoulement allant de l~extérieur de la soupape à l~espace annulaire lorsqu~une fixation subséquente d~un chemisage expansé (218) est prévue et le chemisage expansé doit être cimenté en place. Un manchon de barrière (204), un nez (207), et un manchon extérieur (210) définissent une cavité fermée hermétiquement ayant un matériau en vrac incompressible (208) à l~intérieur qui recouvre l~emplacement de montage sur le tubage. Un profil de positionnement et une soupape à manchon coulissant facultative et un passage d~écoulement allant de l~extérieur de la soupape à l~espace annulaire peuvent être prévus. La cimentation du tubage se fait à travers le manchon de barrière. Après la cimentation, le manchon et le nez sont forés et le matériau incompressible est éliminé vers la surface avec les déblais de forage.

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