Drill pipe oscillation regime and torque controller for slide drilling
First Claim
1. A method for controlling toolface orientation, comprising:
- oscillating a drill string coupled to a top drive an oscillation revolution amount to reduce friction of the drill string in a wellbore during a slide drilling procedure;
detecting a torsional wave traveling along the drill string produced in response to the oscillating the drill string during the slide drilling procedure; and
modifying the oscillation revolution amount in response to the detected torsional wave to dampen at least a portion of the detected torsional wave to maintain the toolface orientation of a bottom hole assembly on the drill string during the slide drilling procedure.
2 Assignments
0 Petitions
Accused Products
Abstract
Apparatuses, methods, and systems are described which assist in controlling toolface orientation of a bottom hole assembly. A controller instructs a top drive to oscillate a drill string an oscillation revolution amount to reduce friction of the drill string in a wellbore during a slide drilling procedure. A torque sensor detects torque at an interface between the drill string and the top drive, and the controller determines properties of a torsional wave from the detected torque that is propagating along the drill string during the slide drilling procedure. The controller determines a modification to the oscillation revolution amount and/or rotations per minute in order to control the toolface orientation in a desired manner. The top drive implements the determined modification and thereby assists in controlling the toolface orientation during the slide drilling procedure.
-
Citations
20 Claims
-
1. A method for controlling toolface orientation, comprising:
-
oscillating a drill string coupled to a top drive an oscillation revolution amount to reduce friction of the drill string in a wellbore during a slide drilling procedure; detecting a torsional wave traveling along the drill string produced in response to the oscillating the drill string during the slide drilling procedure; and modifying the oscillation revolution amount in response to the detected torsional wave to dampen at least a portion of the detected torsional wave to maintain the toolface orientation of a bottom hole assembly on the drill string during the slide drilling procedure. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A drilling apparatus, comprising:
-
a top drive controllable to rotate a drill string in a first rotational direction during a rotary drilling operation and to oscillate the drill string in the first rotational direction and an opposite second rotational directional during a slide drilling procedure according to a determined oscillation revolution amount to reduce friction of the drill string in a downhole bore of a wellbore; a sensor configured to detect a torsional wave traveling along the drill string produced in response to the oscillation of the drill string during the slide drilling procedure; and a controller configured to receive information representing the torsional wave from the sensor and, based on the received information from the sensor, modify the determined oscillation revolution amount to dampen at least a portion of the detected torsional wave to maintain a toolface orientation of a bottom hole assembly on the drill string during the slide drilling. - View Dependent Claims (9, 10, 11, 12, 13, 14)
-
-
15. A method for controlling toolface orientation, comprising:
-
determining a first oscillation revolution amount determined based on one or more characterizations of a drill string in a wellbore during a slide drilling procedure; oscillating the drill string the first oscillation revolution amount to reduce friction of the drill string in the wellbore during the slide drilling procedure; detecting a torsional wave traveling along the drill string produced in response to the oscillating the drill string during the slide drilling procedure; and adjusting the first oscillation revolution amount based on the detected torsional wave to a second oscillation revolution amount different from the first oscillation revolution amount to dampen at least a portion of the detected torsional wave to maintain the toolface orientation of a bottom hole assembly on the drill string during the slide drilling procedure. - View Dependent Claims (16, 17, 18, 19, 20)
-
Specification