# US 10,480,272 B2 · Isolation flange assembly

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- Number: US 10,480,272 B2
- Document ID: US10480272B2
- Status: Granted
- Kind: B2
- Application number: 15/205,557
- Filed: 2016-07-08
- Published: 2018-01-11
- Granted: 2019-11-19
- Earliest claimed: 2016-07-08
- Assignees: Cameron International Corporation
- Applicants: Cameron International Corporation
- Inventors: Dennis P. Nguyen
- Web page: https://patentgrep.com/patent/US10480272B2

## CPC

- E21B 33/03: Well heads; Setting-up thereof
- E21B 33/04: Casing heads; Suspending casings or tubings in well heads
- E21B 2200/01: Sealings characterised by their shape
- E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS

## Abstract

An isolation flange assembly including a body including a receptacle disposed therein, and a first seal assembly disposed in the receptacle of the body, wherein the first seal assembly is configured to sealingly engage an inner surface of the receptacle of the body and an outer surface of a tubular member extending into the receptacle of the body, wherein the first seal assembly includes an annular radially outer seal, and an annular radially inner seal in engagement with the outer seal.

## Claims

### Claim 1

An isolation flange assembly, comprising:
a body including a receptacle disposed therein and a passage extending from the receptacle;
a first seal assembly disposed in the receptacle of the body, wherein the first seal assembly is configured to sealingly engage an inner surface of the receptacle of the body and an outer surface of a tubular member extending into the receptacle of the body, and wherein a passage of the tubular member is in fluid communication with the passage of the body; and
a second seal assembly disposed in a receptacle of a spool that is coupled to the body, wherein the second seal assembly is configured to sealingly engage an inner surface of the receptacle of the spool and the outer surface of the tubular member;
wherein the first seal assembly comprises an annular radially outer seal, and an annular radially inner seal in engagement with the outer seal;
wherein the first seal assembly is configured to increase a sealing pressure between the inner seal and the outer surface of the tubular member in response to a fluid pressurization of the passage of the body.

### Claim 2 (depends on 1)

The isolation flange assembly of claim 1, wherein an outer surface of the outer seal comprises a ridge extending therefrom, and an inner surface of the inner seal comprises a ridge extending therefrom.

### Claim 3 (depends on 1)

The isolation flange assembly of claim 1, wherein the inner seal comprises a radially expanded end and a radially reduced end, and the outer seal comprises a radially expanded end and a radially reduced end.

### Claim 4 (depends on 3)

The isolation flange assembly of claim 3, wherein the radially expanded end of the inner seal comprises a groove extending therein.

### Claim 5 (depends on 1)

The isolation flange assembly of claim 1, wherein the outer seal comprises a radially inner surface disposed at an acute angle relative a longitudinal axis of the body, and the inner seal comprises a radially outer surface disposed at an acute angle relative the longitudinal axis of the body.

### Claim 6 (depends on 5)

The isolation flange assembly of claim 5, wherein the inner surface of the outer seal and the outer surface of the inner seal are in slidable engagement.

### Claim 7 (depends on 1)

The isolation flange assembly of claim 1, further comprising a port extending through the body and in fluid communication with the receptacle of the body.

### Claim 8 (depends on 7)

The isolation flange assembly of claim 7, wherein, in response to pressurization of the port, the inner seal is urged against the outer seal.