Casing running and drilling system

E - Fixed Constructions – 21 – B

Patent

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E21B 19/07 (2006.01)

Patent

CA 2517895

A method and apparatus for holding and turning a tubular and string of tubulars, such as casing (18), for make-up and drilling with the tubulars are disclosed. The apparatus generally includes a spear (14) and a clamping head (16), both of which are mounted to a top drive (12). The spear and the clamping head can be engaged to transmit torque therebetween from the top drive. In addition, an aspect of the invention provides variable height wickers (154, 158) positioned on slips (48) to enable use of the slips with variable inner diameter (ID) and weight casing without deformation or rupture of the casing. Still further, a casing collar is also provided to provide reinforcement to the casing in the area of slip contact with the casing ID.

La présente invention concerne un procédé et un appareil conçus pour maintenir ou faire tourner un tube et une colonne de tubes, tel qu'un cuvelage, afin de réaliser un blocage et un forage avec les tubes. L'appareil comprend généralement un harpon et une tête de serrage qui sont les deux montés sur un mécanisme d'entraînement supérieur. Le harpon et la tête de serrage peuvent venir en prise afin de transmettre un couple entre eux à partir du mécanisme d'entraînement supérieur. De plus, un aspect de cette invention concerne des vanneries à hauteur variable placées sur des coins de retenue afin de pouvoir utiliser ces coins de retenue avec un cuvelage à diamètre interne variable (ID) et à poids variable, sans le déformer ou le rompre. La présente invention concerne également un joint de cuvelage conçu pour renforcer le cuvelage dans la zone de contact entre les coins de retenue et le diamètre interne du cuvelage.

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