Device to resist rotational forces while drilling a borehole
AssigneeNabors Lux 2 Sarl
InventorsSiamak Shahipassand, Patrick Reiners, Stig Bakke, Andrew Gorrara
Life of this patent
Estimating the term…
Abstract
An antirotation stabilizer may include one or more antirotation pads extending from a stabilizer body. Each antirotation pad may be positioned at least partially within a recess formed in the stabilizer body. Each antirotation pad may be coupled to a torsion bar. The torsion bar may couple between the antirotation pad and the stabilizer body and may be under torsional loading such that the antirotation pad is extended from the stabilizer body. The antirotation stabilizer may include one or more rollers.
Claims18
An antirotation stabilizer positionable in a wellbore comprising:
- a stabilizer body having a recess formed therein;
- an antirotation pad positioned at least partially within the recess wherein the antirotation pad cams out of recess;
- and a torsion bar, the torsion bar coupled between the stabilizer body and the antirotation pad, the torsion bar coupled to the antirotation pad off center of the antirotation pad, the torsion bar being in torsional loading.
A method comprising:
- providing an antirotation stabilizer including:
- a stabilizer body having a recess formed therein;
- an antirotation pad positioned at least partially within the recess;
- and a torsion bar, the torsion bar coupled between the stabilizer body and the antirotation pad, the torsion bar coupled to the antirotation pad off center of the antirotation pad, the torsion bar being in torsional loading;
- positioning the antirotation stabilizer in an uncased portion of a wellbore;
- camming the antirotation pad from the stabilizer body under torsion from the torsion bar;
- engaging the wellbore with the antirotation pad;
- and preventing rotation of the antirotation stabilizer relative to the wellbore.
Dependencies are inferred from the claim text.