Casing make-up and running tool adapted for fluid and cement...

Details Casing make-up and running tool adapted for fluid and cement... Casing make-up and running tool adapted for fluid and cement...

E - Fixed Constructions

21

B

E21B 33/04 (2006.01) E21B 33/05 (2006.01)

Patent

CA 2667369

The apparatus of the present invention provides a top drive (3)- supported tool for making up and running casing strings into a borehole. The tool comprises a fill-up and circulation assembly and a launcher assembly (6) that is adapted to cooperate with a connectable cement wiper plug assembly for launching wiper plugs (52, 54) that control cement placement in the annulus between a casing string and a borehole containing the casing string. The tool of the present invention shortens or eliminates delays in well operations, thereby improving integrity of cement liners formed by placing cement slurry in a targeted interval.

L'appareil de la présente invention fournit un outil supporté par un dispositif d'entraînement par le haut (3) pour fabriquer et poser des colonnes de tubage dans un trou de forage. L'outil comprend un ensemble de remplissage et de mise en circulation, et un ensemble de lancement (6) qui est adapté pour coopérer avec un bouchon de cimentation pouvant être relié pour lancer des bouchons de cimentation (52, 54), contrôlant et mettant en place du ciment dans l'espace annulaire situé entre une colonne de tubage et un trou de forage contenant la colonne de tubage. L'outil de la présente invention raccourci ou élimine les retards dans des opérations de forage, en améliorant ainsi une intégrité de revêtements en ciment formés en mettant en place un laitier de ciment dans un intervalle ciblé.

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