Carl F Boehm

US Patent:

49324721, Jun 12, 1990

Filed:

Apr 26, 1989

Appl. No.:

7/343959

Inventors:

Carl F. Boehm - Houston TX

Assignee:

Vetco Gray Inc. - Houston TX

International Classification:

E21B 3304

US Classification:

166208

Abstract:

A metal seal or packoff for a casing hanger has features which allow a slight downward movement of the casing hanger relative to the well head after the seal has been set. The seal ring has a base and inner and outer walls that extend upward from the base. The inner and outer walls are radially separated by an annular cavity. An energizing ring will move into this cavity to push the inner and outer walls farther apart into sealing engagement with the casing hanger and wellhead. A protective member locates below the base. A flexible section extends downward from the protective member, while joining the protective member to the base. The flexible section is located on the inner side of the base and has a radial dimension that is much less than the base. This thin section enables the base to flex if downward movement of the casing hanger occurs after the seal has been set. The flexing reduces the chance for any movement between the inner and outer walls and the wellhead and casing hanger to take place.

US Patent:

46659790, May 19, 1987

Filed:

Sep 6, 1985

Appl. No.:

6/773396

Inventors:

Carl F. Boehm - Houston TX

Assignee:

Hughes Tool Company - Houston TX

International Classification:

E21B 3304

US Classification:

166208

Abstract:

A casing hanger seal for a subsea well uses a seal ring having inner and outer walls spaced radially apart from each other. An energizing ring is moved from disengaged position to an engaged position between the walls, wedging them apart to form the metal seal. Vertical slots are formed in the walls to facilitate expansion. The slots ae located in a gripping section that engages wickers formed on the inner and outer tubular members of the well. Circumferential grooves are located in the sealing areas.

US Patent:

47519681, Jun 21, 1988

Filed:

Dec 10, 1986

Appl. No.:

6/940875

Inventors:

Thomas J. Ames - Cypress TX
Carl F. Boehm - Houston TX

Assignee:

Hughes Tool Company - Houston TX

International Classification:

E21B 33035

US Classification:

166368

Abstract:

A metal support ring is located between a housing and a wellhead for reducing bending movement of the wellhead relative to the housing. The support ring has a plurality of circumferentially extending ribs for engaging the bore of the housing. The ribs are parallel to and vertically spaced apart from each other. Each rib protrudes outwardly from the wellhead a distance greater than the inner diameter of the housing. This causes the ribs to deflect in an interference fit when the wellhead is inserted into the housing.

US Patent:

54640636, Nov 7, 1995

Filed:

Aug 19, 1994

Appl. No.:

8/292986

Inventors:

Carl F. Boehm - Houston TX

Assignee:

ABB Vetco Gray Inc. - Houston TX

International Classification:

E21B 3304

US Classification:

166382

Abstract:

A well has a metal seal for sealing between tubular inner and outer members. The seal has a solid metal body with an inner wall and an outer wall that are cylindrical. The radial thickness of the seal is initially greater than the pocket between the inner and outer tubular members. Also, the inner diameter is greater than the outer diameter of the inner tubular member. The seal is radially deformed in an interference fit.

US Patent:

52858537, Feb 15, 1994

Filed:

Sep 28, 1992

Appl. No.:

7/951617

Inventors:

Lawrence A. Eckert - Houston TX
Carl F. Boehm - Houston TX

Assignee:

ABB Vetco Gray Inc. - Houston TX

International Classification:

E21B 2300

US Classification:

166382

Abstract:

A casing hanger seal has facilities to enable periodic testing from the exterior of the wellhead housing. The casing hanger seal has inner and outer walls separated by a cavity. An energizing member moves downward to force the inner and outer walls into engagement with the casing hanger and bore of the wellhead housing. Test passages extend through the inner and outer walls, energizing member, and wellhead housing. The test passages divide the seal member into primary and secondary seal areas. Applications of test fluid, from the exterior, to the test passages determines whether a leak is present.

US Patent:

50677349, Nov 26, 1991

Filed:

Jun 1, 1990

Appl. No.:

7/531886

Inventors:

Carl F. Boehm - Houston TX

Assignee:

ABB Vetco Gray Inc. - Houston TX

International Classification:

F16J 1508

US Classification:

277236

Abstract:

A metal seal for sealing against casing in a well has a plurality of circumferentially spaced metal hands. An inlay material fills the cavities located between the metal bands. The inlay material has a groove formed in its sealing side. The metal bands are soft enough to deform when the seal if pressed into contact with the casing. The inlay material is softer than the material of the metal bands.

US Patent:

54563143, Oct 10, 1995

Filed:

Jun 3, 1994

Appl. No.:

8/253659

Inventors:

Carl F. Boehm - Houston TX
David L. Ford - Katy TX
Herman O. Henderson - Houston TX

Assignee:

ABB Vetco Gray Inc. - Houston TX

International Classification:

E21B 3304

US Classification:

166208

Abstract:

A seal for a wellhead housing employs a locking groove. The seal is of a U-shape, having an inner and outer radially spaced apart legs. An energizing ring is stroked downward to force the legs apart to cause them to seal between the wellhead housing in the conduit and the wellhead housing. At least one groove is located on one side of the energizing ring, with the groove being of a saw-toothed shape to allow entry but to resist upward movement of the energizing ring. In a metal version of a seal, the groove is located on the exterior of the energizing ring so as to allow some axial movement of the inner leg of the seal relative to the energizing ring. In a second version, the seal is of plastic.

US Patent:

20130248196, Sep 26, 2013

Filed:

Mar 23, 2012

Appl. No.:

13/428980

Inventors:

Nicholas Peter Gette - Houston TX, US
Carl F. Boehm - Houston TX, US
Daniel Ralph Barnhart - Houston TX, US

Assignee:

VETCO GRAY INC. - Houston TX

International Classification:

E21B 34/04
E21B 17/10

US Classification:

166348, 166 853

Abstract:

A high capacity single trip lockdown bushing and a method to operate the same is disclosed. The lockdown bushing includes a tubular body that carries a locking ring and an energizing ring about an upper portion of the tubular body. The energizing ring includes a cam portion interposed between the locking ring and the tubular body so that the cam portion and the locking ring overlap along mating cam surfaces in an unset position. A running tool carries the lockdown bushing to land on a casing hanger. The running tool is actuated to drive the energizing ring downward so that the mating cam surfaces interact to move the locking ring radially outward into engagement with wickers formed in a wellhead.

Address:

16218 Peach Bough Ln, Houston, TX 77095

VIN:

5TDZT34A87S290868

Make:

TOYOTA

Model:

SEQUOIA

Year:

2007