Back to results
US 4,287,953 AGranted
Method of removing conduit from curved borehole
AssigneeConoco Inc.
InventorRaymond L. Mazza
Life of this patent
Estimating the term…
Abstract
A method for removing a conduit from a curved borehole by applying a compression load to the conduit to cause it to bend away from the inside of the borehole curve.
Claims3
A method of removing a conduit from a curved borehole comprising:
- (a) pumping a settable plug down said conduit to a position beyond at least a portion of the curved borehole;
- (b) setting said plug against the interior of said conduit;
- (c) applying a compression load to said conduit by applying tension to a cable attached to said plug;
- and
- (d) simultaneously with step (c) applying a pulling force to said conduit whereby removal of said conduit from said borehole is facilitated.
2 more elements
Dependencies are inferred from the claim text.