Drill string suspension

Details Drill string suspension Drill string suspension

E - Fixed Constructions

21

B

E21B 7/24 (2006.01) E21B 28/00 (2006.01)

Patent

CA 2623012

Vertical and/or directional drilling apparatus where compliant support (air bag, magnetic or the like) is provided for a vibrational head and drive assembly that carries the drill string. With the vibrational head having a shuttle from which vibration is not directly taken and with the compliant support allowing pull back in the directional mode several advantages arise.

La présente invention concerne un appareil de forage vertical et/ou directionnel où un support souple (coussin d~air, magnétique ou analogue) est prévu pour une tête vibratoire et un ensemble d~entraînement qui supporte le train de tiges de forage. Avec la tête vibratoire qui possède une navette à partir de laquelle une vibration n~est pas prise directement et avec le support souple qui permet le retour dans le mode directionnel, plusieurs avantages sont obtenus.

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