Wellbore notching assembly

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.