Patent ID: 9739112
Date: 2017-08-22
CPC Classifications: E21B

Claim:
1. A downhole packer comprising: a first locking member positioned at least partially around an outer surface of an oilfield tubular, the first locking member comprising an inner surface that engages the outer surface of the tubular, and a tapered outer surface; a drive ring positioned at least partially around the first locking member and comprising a reverse-tapered inner surface that engages the tapered outer surface of the first locking member; a first cap movably coupled with the drive ring, disposed at least partially around the first locking member, and axially-engaging the first locking member, wherein moving at least one of the first cap and the drive ring toward the other causes the drive ring to apply a radially-inward force on the first locking member, causing the first locking member to be secured to the tubular; and a sealing element configured to be disposed at least partially around the tubular and held in position at least axially with respect thereto by the first locking member engaging the tubular, wherein the sealing element is configured to expand radially-outward in response to application of an axially-directed, compressive force, wherein the inner surface of the first locking member comprises a plurality of teeth, and wherein relative rotation between the drive ring and the first cap causes the first cap and the drive ring to move closer together.