TORQUE BOOST APPARATUS AND METHOD FOR TOP DRIVE DRILLING SYSTEMS

摘要

The torque boost apparatus and method for top drive drilling systems of t he 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 enoug h 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.