Metal End Cap Seal

Patent metadata

Field	Value
Publication number	US-2016298767-A1
Application number	US-201615084281-A
Country	US
Kind code	A1
Filing date	Mar 29, 2016
Priority date	Apr 7, 2015
Publication date	Oct 13, 2016
Grant date	—

Abstract

A metal end cap seal for sealing against resent invention relates to seals within a fluid system. The metal end caps of the seal include protrusions or nibs on the terminal ends of the caps, providing for reduced friction during installation and use. The seal may also include a base elastomer and an insert elastomer, the base elastomer and insert elastomer having different material properties from one another. The insert elastomer is selected to reduce friction with a sealing surface.

First claim

What is claimed is:

1 . A seal comprising:
a base; an upper metal end cap disposed on an upper surface of the base, the upper metal end cap comprising nibs disposed on terminal ends of the cap; and a lower metal end cap disposed on a lower surface of the base, the lower metal end cap comprising nibs disposed on terminal ends of the cap.

2 . The seal of claim 1 , further comprising an insert disposed along the inner surface of the seal body.

3 . The seal of claim 2 , wherein the insert is molded into the base.

4 . The seal of claim 3 , wherein the base and insert comprise material properties that are different from one another.

5 . The seal of claim 4 , wherein the material properties include one or more selected from hardness, stiffness, and glass transition temperature.

6 . The seal of claim 2 , wherein the insert comprises a dual durometer material.

7 . The seal of claim 1 , wherein the base comprises a protrusion which extends radially inward from an inner surface of the base.

8 . The seal of claim 7 , wherein the protrusion comprises chamfered edges.

9 . The seal of claim 8 , wherein the insert is disposed in the protrusion.

10 . The seal of claim 1 , wherein the lower and upper metal end caps comprise one or more materials selected from nickel based alloys, copper alloys which are beryllium free, and copper beryllium alloys.

11 . A sealing system comprising:
an inner body; an outer body; a seal for sealing against the inner body and outer body, the seal comprising:
a base;
an upper metal end cap disposed on an upper surface of the base, the upper metal end cap comprising nibs disposed on terminal ends of the cap; and
a lower metal end cap disposed on a lower surface of the base, the lower metal end cap comprising nibs disposed on terminal ends of the cap.

12 . The sealing system of claim 11 , further comprising an insert disposed along an inner surface of the base.

13 . The sealing system of claim 12 , wherein the insert is molded into the base.

14 . The sealing system of claim 13 , wherein the base and insert comprise material properties that are different from one another.

15 . The sealing system of claim 14 , wherein the material properties include one or more selected from hardness, stiffness or glass transition temperature.

16 . The sealing system of claim 15 , wherein the insert portion is a dual durometer material.

17 . The sealing system of claim 11 , wherein the base comprises a protrusion which extends radially inward from an inner surface of the base.

18 . The sealing system of claim 17 , wherein the protrusion comprises chamfered edges.

19 . The sealing system of claim 11 , wherein the lower and upper metal end caps comprise one or more materials selected from nickel based alloys, copper alloys which are beryllium free, and copper beryllium alloys.

20 . The sealing system of claim 11 , wherein the inner body is selected from one of a production tree, a casing hanger, a casing head, a casing string, a tubing hanger, a tubing head, a tubing string, a running tool, a blowout preventer, a valve, and a flange.

21 . The sealing system of claim 11 , wherein the outer body is selected from one of a production tree, a casing hanger, a casing head, a casing string, a tubing hanger, a tubing head, a tubing string, a running tool, a blowout preventer, a valve, and a flange.

Assignees

• Cameron Int Corp

Inventors

• Puccio William
• Chou Shian Jiun
• Cain David

Classifications

• E21B33/04

  Casing heads; Suspending casings or tubings in well heads · CPC title

• E21B33/06

  Blow-out preventers {, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers (rotating blow-out preventers E21B33/085)} · CPC title

• F16J15/128 Primary

  with metal covering · CPC title

• E21B33/00

  Sealing or packing boreholes or wells · CPC title