The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 30, 1996
Filed:
Oct. 03, 1994
John L Baugh, Houston, TX (US);
George J Melenyzer, Humble, TX (US);
Other;
Abstract
A seal apparatus is provided for use in a subterranean wellbore having a wellbore tubular disposed therein that defines a wellbore surface. A conveyance tubular is provided, which is positionable within the subterranean wellbore. A sealing ring is provided, and disposed about at least a portion of the conveyance tubular. The sealing ring has a first surface proximate the conveyance tubular and a second surface which is removed in distance from the conveyance tubular. The second surface defines a sealing surface, and includes a plurality of portions, with selected ones of the plurality of portions of the sealing ring extending radially from the conveyance tubular in at least one radial dimension. The selected portions define at least one metal seal point for selectively and sealingly engaging the wellbore surface. The seal apparatus is operable in a plurality of modes, including a running mode of operation and a sealing mode of operation. In the running mode of operation, the seal ring is maintained in a radially-reduced position, out of engagement with the wellbore surface. In the sealing mode of operation, the at least one metal seal point of the sealing ring is in sealing metal-to-metal engagement with the wellbore surface, providing a fluid-tight seal at a selected location between the conveyance tubular and the wellbore tubular. Also provided is an actuator member, which is selectively and remotely actuable, for urging the sealing ring between the running and sealing modes of operation.