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:
Mar. 11, 2003
Filed:
Dec. 08, 2000
Leslie Dean Smith, Fritch, TX (US);
Charles Robert Milton, Fritch, TX (US);
Timothy Lewis Clifton, Borger, TX (US);
Robert Daniel Winegar, Borger, TX (US);
Robbins & Myers Energy Systems, L.P., Houston, TX (US);
Abstract
A wellhead for use with subterranean wells includes an improved tubing hanger including an improved electric power cable pack-off port that permits positioning an electric submersible pump (“ESP”) power cable through the port in the tubing hanger. The improved wellhead permits installation of packing and compression rings within the power cable port to create a vapor-tight pressure seal around the outer cable jacket The seal may be rated at pressures of at least 750 psia. The wellhead comprises a wellhead body for supporting a tubing hanger the tubing hanger including a tubing port and a power cable port for passing electrical power from an electrical power source through the power cable port to the electric motor M. The wellhead also includes a cable seal within the power cable port, a lower packing seat and a packing gland selectively moveable with respect to the seat for compressing the cable seal to form a pneumatic seal.