US 12,312,909 B2
Synchronized actuator having multiple motors for downhole well tool
Nauman H. Mhaskar, Houston, TX (US); Don A. Hopmann, Alvin, TX (US); and Sebastiaan J. Wolters, Kingwood, TX (US)
Assigned to Weatherford Technology Holdings, LLC, Houston, TX (US)
Filed by Weatherford Technology Holdings, LLC, Houston, TX (US)
Filed on Jan. 21, 2023, as Appl. No. 18/099,925.
Prior Publication US 2024/0247565 A1, Jul. 25, 2024
Int. Cl. E21B 34/06 (2006.01); E21B 43/12 (2006.01)
CPC E21B 34/066 (2013.01) [E21B 43/12 (2013.01); E21B 2200/06 (2020.05)] 21 Claims
OG exemplary drawing
 
1. A downhole tool for use in a well, the downhole tool comprising:
an actuator comprising:
a first screw being rotatable and having a first proximal end;
a first motor being configured to produce a first drive to rotate a first drive shaft;
a first gear having a first spline connection to the first drive shaft and the first proximal end of the first screw, the first gear being rotatable and transferring first rotation to the first screw;
a second screw being rotatable and having a second proximal end;
a second motor being configured to produce a second drive to rotate a second drive shaft;
a second gear having a second spline connection to the second drive shaft and the second proximal end, the second gear being rotatable and transferring second rotation to the second screw;
an intermediate gear engaged between the first and second gears and being configured to synchronize the first and second rotations of the first and second screws as a synchronized rotation produced by at least one of the first and second drives; and
a yoke disposed on the first and second screws and being displaceable thereon by the synchronized rotation; and
an actuatable member of the downhole tool connected to the yoke of the actuator and being actuatable in response to the displacement of the yoke.