Torque boost apparatus and method for top drive drilling...

Details Torque boost apparatus and method for top drive drilling... Torque boost apparatus and method for top drive drilling...

E - Fixed Constructions

21

B

E21B 19/00 (2006.01) E21B 15/00 (2006.01)

Patent

CA 2307386

The torque boost apparatus and method for top drive drilling systems of the present invention provides a light and compact modification of existing TDS designs in order to produce a short yet strong torque boost for the TDS main drive shaft. The present invention uses a hydraulic cylinder to power a gear segment for providing a torque boost to a spur gear attached to the TDS main drive shaft. It provides the TDS main drive shaft with enough added torque to break-out and make-up tightly connected drive stem components and can additionally be used to produce a high torque boost for the drill bit.

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