COMPONENT OF BOTTOM HOLE ASSEMBLY HAVING UPWARDLY-DIRECTED FLUID CLEANING FLOW AND METHODS OF USING SAME

摘要

A stabilizer, drill bit, or other component of a bottom hole assembly for use in drilling a borehole includes an elongate and generally cylindrical body, a flow bore in the body, a plurality of outwardly-extending blades, with a valley disposed between adjacent blades. A ring segment that is spaced from the body and extends across at least one valley to define a flow passage through which cuttings-laden drilling mud is conveyed with an upwardly-direct trajectory. The body includes a hole or passageway for conveying drilling mud from the flow bore to between the blades. The passageway terminates in an exit directed toward the flow passage so as to provide fresh drilling mud with a trajectory such that the fluid passes through the flow passage.

主权项

1. A stabilizer for use in drilling a borehole, comprising:
a generally cylindrical body having an inner wall defining a flow bore in said body; a plurality of blades extending outwardly from said body; a valley disposed between a pair of adjacent blades; a ring segment spaced from said body and extending over said valley; a flow passage between said ring segment and said body; a hole in said body configured to convey drilling fluid from said flow bore to between said pair of blades.