US 11,725,499 B2
Methods relating to tool face orientation
Jean Antoine Jacques Roger Auriol, Calgary (CA); and Roman Jgorevich Shor, Calgary (CA)
Assigned to UTI LIMITED PARTNERSHIP, Calgary (CA)
Filed by UTI LIMITED PARTNERSHIP, Calgary (CA)
Filed on Jan. 20, 2021, as Appl. No. 17/153,492.
Claims priority of provisional application 62/965,734, filed on Jan. 24, 2020.
Prior Publication US 2021/0231000 A1, Jul. 29, 2021
Int. Cl. E21B 47/024 (2006.01); E21B 44/02 (2006.01); E21B 7/04 (2006.01)
CPC E21B 47/024 (2013.01) [E21B 7/04 (2013.01); E21B 44/02 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A method for controlling an orientation of a drilling rig tool face that is part of a drilling rig, the method comprising:
a) stabilizing a velocity of a borehole assembly of said drilling rig to a velocity reference;
b) prior to a motor of top drive reaching a release torque that causes motion to said tool face, increasing an input to said top drive to thereby cause an increase in torque in said motor, wherein an increase in said input is of a specified value;
c) determining an initial estimated difference in orientation of said tool face, said initial estimated difference resulting from said increase in torque;
d) repeating steps a) and b) with said input having a value equal to an immediately preceding input value and said specified value;
e) determining a second estimated difference in orientation of said tool face due to said input equaling said immediately preceding input value and said specified value;
f) determining a desired input value to produce said desired orientation based at least on said initial estimated difference and said second estimated difference and said specified value;
g) repeating step a) and applying said desired input value determined in step f) to produce said desired orientation of said tool face.