Apparatus and methods for tubular makeup interlock

Details Apparatus and methods for tubular makeup interlock Apparatus and methods for tubular makeup interlock

E - Fixed Constructions

21

B

E21B 19/16 (2006.01)

Patent

CA 2685373

Apparatus and methods are provided to prevent an operator from inadvertently dropping a string into a wellbore during assembling and disassembling of tubulars. In one embodiment, an interlock system is used to control the operations of a gripping apparatus connected to the top drive and a spider such that at least one of the top drive or the spider retains the tubular. The interlock system allows the spider to open when the gripping apparatus is supporting a load of the tubular or is in position to support a load of the tubular.

L'invention concerne des appareils et des procédés servant à empêcher un opérateur de faire tomber par inadvertance une corde dans un puits pendant le montage ou le démontage de conduites. Dans un mode de réalisation, un système de verrouillage est utilisé pour contrôler les opérations d'un appareil de serrage relié au mécanisme de commande supérieur et à un mandrin intermédiaire de manière à ce que le mécanisme de commande supérieur ou le mandrin intermédiaire au moins retienne la conduite. Le système de verrouillage permet au mandrin intermédiaire de s'ouvrir lorsque l'appareil de serrage supporte une charge de la conduite ou est en mesure de le faire.

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