Patent · US Active

Sealing system for a well valve

US9933075B2 · kind B2 · utility

0Cited by

5References

13Claims

0Family size

Assignee

Halliburton Energy Services, Inc. · US

Inventors

Joseph A. Beisel · Duncan, US
Lawrence A. Herndon · Duncan, US

Key dates

Filing date	Dec 16, 2013
Grant date	Apr 3, 2018
Priority date	—
Expiry date	Dec 16, 2033

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B33/068
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A sealing system for a well valve includes a valve closure, a valve closure carrier, and seal elements. The valve closure includes a central bore. The valve closure carrier includes an annular, metal sealing surface in contact with the exterior of the valve closure to form a metal-to-metal seal with the valve closure. The valve closure carrier defines two flow holes, each of which communicates with the central bore when the valve closure is open to flow fluid, and is sealed from the central bore by the sealing surface when the valve closure is closed. The first seal element seals between the valve closure carrier and the valve closure, and surrounds the first flow hole. The second seal element seals between the valve closure carrier and the valve closure, and surrounds the first seal element and an end opening of the central bore when the valve closure is closed.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.