Steven L Welch

US Patent:

20190024464, Jan 24, 2019

Filed:

Jul 18, 2018

Appl. No.:

16/038720

Inventors:

Steven Welch - Durant OK, US

International Classification:

E21B 17/14
E21B 17/10
E21B 7/20

Abstract:

A casing shoe reamer for bypassing an obstruction in a hole or well drilled in the ground is provided. The casing shoe reamer includes an upper portion, a lower portion, and an interior volume. The upper portion can be removably secured to a casing float collar. The casing shoe reamer further includes bearings disposed therein, which enable the lower portion to rotate relative to the upper portion about its longitudinal axis. The lower portion includes at least three fins extending therefrom, each fin having an aperture disposed on a first side thereof, wherein the aperture is in fluid communication with the interior volume. An impeller is fixed within the interior volume. As a fluid is pumped into the interior volume, the fluid applies a force on the impeller and is expelled through the apertures, which cause the lower portion to rotate in a direction opposite the exiting fluid. The exited fluid and the rotational force of the lower portion enables passage of the casing shoe reamer beyond the obstruction.