Back to results
US 2018/0002985 A1Published application
Bi-directional drilling systems and methods
AssigneeSchlumberger Technology Corporation
InventorsSiamak Dadkhah, Geoffrey Charles Downton, Adam Ian Bowler
Life of this patent
Estimating the term…
Abstract
A method for removing material with a bit includes rotating a bit in a first direction, changing the rotational direction and rotating the bit in an opposing second direction. Rotation of the bit in the first direction and rotation of the bit in the second direction both remove material.
Claims20
A method of removing material with a bit, the method comprising:
- rotating the bit in a first rotational direction for a first duration of time;
- removing material from a wellbore surface for at least a portion of the first duration of time;
- reversing a rotational direction of the bit;
- rotating the bit in a second rotational direction for a second duration of time;
- and
- removing material from the wellbore surface for at least a portion of the second duration of time.
3 more elements
A method of rotating a bit, the method comprising:
- applying a first torque to a portion of a drilling tool assembly in a first direction for a first duration of time;
- applying a second torque to the portion of a drilling tool assembly in the first direction for a second duration of time;
- applying a third torque to the portion of a drilling tool assembly in a second direction for a third duration of time;
- and
- applying a fourth torque to the portion of a drilling tool assembly in the second direction for a fourth duration of time.
2 more elements
A system for rotating a bit:
- a drilling tool assembly, the drilling tool assembly including:
- a drill string, and
- a bit connected at an end of the drill string;
- and
- a top drive configured to alternately apply a drive torque to the drilling tool assembly in a first rotational direction and in an opposing second rotational direction.
2 more elements
Dependencies are inferred from the claim text.