US 12,071,814 B2
Wellbore notching assembly
Gallyam Aidagulov, Dhahran (SA); Devon Chikonga Gwaba, Kennesaw, GA (US); Abbad Mustapha, Khobar (SA); Khalid Mohammed M. Alruwaili, Dhahran (SA); and Murtadha J. AlTammar, Riyadh (SA)
Assigned to Saudi Arabian Oil Company, Dhahran (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA); and Schlumberger Middle East, S.A., Dubai (AE)
Filed on Dec. 7, 2020, as Appl. No. 17/114,150.
Prior Publication US 2022/0178208 A1, Jun. 9, 2022
Int. Cl. E21B 10/32 (2006.01)
CPC E21B 10/327 (2013.01) 34 Claims
OG exemplary drawing
 
1. A system for generating a notch in an open-hole wellbore, the system comprising:
a well tool comprising:
a tool body comprising:
a housing defining at least one slot, the housing defining an interior volume, the housing defining a longitudinal axis;
a cutting device disposed in the interior volume of the housing, the cutting device configured to form a notch in a formation through which the wellbore is formed, the cutting device comprising:
a shaft disposed in the interior volume of the housing, the shaft comprising:
a first portion having first exterior threads that extend around the first portion in a first direction, and
a second portion having second exterior threads that extend around the second portion in a second direction, wherein the second direction is opposite the first direction; and
multiple blades configured to form a round-ended notch, the multiple blades comprising:
a first blade extending from the first portion of the shaft,
a second blade extending from the second portion of the shaft, and
a blade hinge,
wherein the first and second blade are attached by the blade hinge and form a tip of the multiple blades, wherein the tip has a radius, wherein the radius of the tip is parallel to the longitudinal axis of the housing, wherein the radius of the tip defines a curvature of a round end of the notch; and
a motor rotationally coupled to the shaft of the cutting device; and
a computer system comprising:
an electronic controller operatively connected to the motor; and
one or more processors, a non-transitory computer-readable medium storing instructions executable by the one or more processors to perform operations, the operations comprising:
prompting the motor to rotate in a first direction;
calculating a radius of the cutting device, wherein the radius of the cutting device is perpendicular to the longitudinal axis of the housing;
comparing the calculated radius of the cutting device to a predetermined final radius; and
prompting, in response to the comparison, the motor to rotate in a section direction, opposite the first direction.