ROTARY DRILL BIT AND METHOD FOR DESIGNING A ROTARY DRILL BIT FOR DIRECTIONAL AND HORIZONTAL DRILLING

摘要

A multi-layer downhole drilling tool designed for directional and horizontal drilling is disclosed. The drilling tool includes a bit body including a rotational axis extending therethrough. A plurality of primary blades are disposed on exterior portions of the bit body and a plurality of secondary blades are disposed on exterior portions of the bit body between the primary blades. The drilling tool further includes a plurality of first-layer cutting elements disposed on exterior portions of the primary blades and a plurality of second-layer cutting elements disposed on exterior portions of the secondary blades. The second-layer cutting elements are track set with the first-layer cutting elements in an opposite track set configuration.

主权项

1. A multi-layer downhole drilling tool designed for directional and horizontal drilling, comprising:
a bit body with a rotational axis extending therethrough; a plurality of primary blades disposed on exterior portions of the bit body; a plurality of first-layer cutting elements disposed on exterior portions of the primary blades; a plurality of secondary blades disposed on exterior portions of the bit body between the primary blades; and a plurality of second-layer cutting elements disposed on exterior portions of the secondary blades, the second-layer cutting elements track set with the first-layer cutting elements in an opposite track set configuration.