Longyear Tm, Inc.

Bly IP Inc.

Boart Longyear Co.

Jeff Hogan

Christopher L Drenth

Anthony Lachance

Michael Case

Tushar Matkar

Anthony LaChance

Implementations described herein include a hoisting device and method for handling, coupling and recovery of tubular members such as drill string components. The hoisting device has a self-energizing gripping means configured to releasably engage a drill string component. In one aspect, the self-energizing gripping means can be operable to increase at least one of a radial biasing force and a contact friction force applied to a drill string component, causing the gripping means to increase the overall gripping force applied to the component with minimal effort exerted by a hoisting device operator.

Handling and recovery devices for tubular members and associated methods

A threaded drill string component having a hollow elongate body with a box end portion, an opposing pin end portion and a cylindrical mid-body portion that extends longitudinally between the respective box and pin end portions and has a variable wall diameter. The mid-body inner wall of the mid-body portion has at least one projecting portion or upset that is spaced from both the box and pin end portions and extends inwardly toward a central longitudinal axis of the hollow body and a plurality of troughs defined in the mid-body inner wall of the mid-body portion.

Drill rod having internally projecting portions

Drill bits having flushing channels and surface features that cooperate to evacuate cuttings. The surface features can be provided as flutes, fins, and/or ribs defined in a body portion of the bits. Optionally, the surface features can define back-cutting edges the permit back reaming.

High-productivity drill bits

Growing community of inventors

Brampton, Canada

Jeff Hogan