Patent ID: 8827007
Filing Date: 2014-09-09
Classification: E21B

Abstract:
1. A steering head for use with a casing, the steering head comprising: a generally cylindrical body defining a longitudinal body axis and having a bore channel, a first body end with a lead edge and a second body end with a rear edge, the second body end being mountable to the casing, and a body surface extending from the lead edge to the rear edge; a steering flap disposed on the steering head and having a distal end, a hinge end, a first flap face and an opposing second flap face, the first flap face facing radially inwardly toward the body surface and the second flap face facing radially outwardly away from the longitudinal body axis; and a biased hinge secured to both the steering head and the hinge end of the steering flap such that the steering flap is thereby mounted to the steering head, wherein the biased hinge is operative to retract the steering flap into the retracted position from the extending position.