Brian L Eidem

US Patent:

6354158, Mar 12, 2002

Filed:

May 2, 2000

Appl. No.:

09/563114

Inventors:

Brian L. Eidem - Cerritos CA
Bruce B. Prior - Yorba Linda CA
Timothy I. Montgomery - Corona CA
Tarun Khanna - Fullerton CA

Assignee:

Varco International, Inc. - Houston TX

International Classification:

G01L 500

US Classification:

7386256, 7315259

Abstract:

The invention provides a method and apparatus for measuring the torque applied to the drum shaft of a hoist. By measuring the torque on the drum shaft, the force or tension on the fast line can be accurately determined. If the force or tension on the dead line is also measured, the forces on the fast line and dead line can be used to determine the force applied to the load. One embodiment of the invention uses a transmission coupled to the drum shaft as a moment arm. The transmission is coupled to a fixed point by a strain-sensing element located some distance from the center of the drum shaft. The distance between the center of the drum shaft and the point along the transmission where the strain-sensing element is mounted provides the moment arm for measuring the torque on the drum shaft. Another embodiment of the invention provides âCâ-shaped side plates to support and mount the main bearings of the drum shaft. The cutout provided by the âCâ-shape of the side plates allows the drum shaft, drum shaft bearings, and drum shaft bearing carriers to be passed from outside the side plates to inside the side plates without the need to remove components from the ends of the drum shaft.

US Patent:

6443241, Sep 3, 2002

Filed:

Mar 3, 2000

Appl. No.:

09/518122

Inventors:

Daniel Juhasz - Westminister CA
George Boyadjieff - Bell Park CA
Brian L. Eidem - Cerritos CA
Hans Van Rijzingen - Etten-Leur, NL

Assignee:

Varco I/P, Inc. - Houston TX

International Classification:

E21B 1906

US Classification:

175 52, 175 85, 166 7751

Abstract:

A pipe running tool for use in an oil drilling system and the like comprises a lower drive shaft adapted to engage a drive shaft of a top drive assembly for rotation therewith. The pipe running tool further includes a lower pipe engagement assembly which is driven to rotate by the lower drive shaft, and is designed to releasably engage a pipe segment in such a manner to substantially prevent relative rotation between the two. Thus, when the lower pipe engagement assembly is actuated to securely hold a pipe segment, the top drive assembly may be actuated to rotate the top drive output shaft, which causes the lower drive shaft and lower pipe engagement assembly to rotate, which in turn rotates the pipe segment.

US Patent:

6637526, Oct 28, 2003

Filed:

Dec 20, 2001

Appl. No.:

10/029585

Inventors:

Daniel Juhasz - Westminister CA
George Boyadjieff - Villa Park CA
Brian L. Eidem - Cerritos CA
Hans van Rijzingen - Etten-Leur, NL

Assignee:

Varco I/P, Inc. - Houston TX

International Classification:

E21B 1906

US Classification:

175 52, 175 85, 166 7751

Abstract:

A pipe running tool for use in an oil drilling system and the like comprises a lower drive shaft adapted to engage a drive shaft of a top drive assembly for rotation therewith. The pipe running tool further includes a lower pipe engagement assembly which is driven to rotate by the lower drive shaft, and is designed to releasably engage a pipe segment in such a manner to substantially prevent relative rotation between the two. Thus, when the lower pipe engagement assembly is actuated to securely hold a pipe segment, the top drive assembly may be actuated to rotate the top drive output shaft, which causes the lower drive shaft and lower pipe engagement assembly to rotate, which in turn rotates the pipe segment. The pipe running tool having a greater slip back offset such that drill pipe and drill pipe tool joints may be passed through the central passageway of the tool without interfering with the front of the slip.

US Patent:

6691801, Feb 17, 2004

Filed:

Sep 14, 2001

Appl. No.:

09/952868

Inventors:

Daniel Juhasz - Westminister CA
George Boyadjieff - Bell Park CA
Brian L. Eidem - Cerritos CA
Hans Van Rijzingen - Etten-Leur, NL

Assignee:

Varco I/P, Inc. - Houston TX

International Classification:

E21B 4400

US Classification:

175 27, 166 53, 254277, 267125

Abstract:

A load compensator is disclosed for use in connection with a pipe running tool. The load compensator includes an outer housing connected to the portion of the pipe running tool that holds the pipe segment. A piston is disposed within the housing, and is connected to a top drive system of the pipe running tool. The housing is formed with a first port through which pressurized air is delivered inside the housing to drive the piston within the housing. A second port is disposed at a selected location on the housing, such that when the piston is advanced past the second port, pressurized air passes through the port, and causes the control circuit to stop delivering air through the first port. Once pressurized air no longer flows through the second port, the control circuit causes air to be delivered to the first port.

US Patent:

6938709, Sep 6, 2005

Filed:

Jul 3, 2002

Appl. No.:

10/189355

Inventors:

Daniel Juhasz - Westminster CA, US
George Boyadjieff - Villa Park CA, US
Brian L. Eidem - Cerritos CA, US
Hans van Rijzingen - Oosterhout, NL
Herman Kamphorst - Assen, NL
Dieter Boettger - Den Helder, NL
Guus van Wechem - Reeuwijk, NL

Assignee:

Varco International, Inc. - Orange CA

International Classification:

E21B019/06

US Classification:

175 52, 175 85, 166 7751

Abstract:

A pipe running tool for use in an oil drilling system and the like comprises a lower drive shaft adapted to engage a drive shaft of a top drive assembly for rotation therewith. The pipe running tool further includes a lower pipe engagement assembly which is driven to rotate by the lower drive shaft, and is designed to releasably engage a pipe segment in such a manner to substantially prevent relative rotation between the two. Thus, when the lower pipe engagement assembly is actuated to securely hold a pipe segment, the top drive assembly may be actuated to rotate the top drive output shaft, which causes the lower drive shaft and lower pipe engagement assembly to rotate, which in turn rotates the pipe segment.

US Patent:

7096977, Aug 29, 2006

Filed:

Jan 20, 2005

Appl. No.:

11/040453

Inventors:

Daniel Juhasz - Westminster CA, US
George Boyadjieff - Villa Park CA, US
Brian L. Eidem - Cerritos CA, US
Hans van Rijzingen - Oosterhout, NL
Herman Kamphorst - Assen, NL
Dieter Boettger - Den Helder, NL
Guus van Wechem - Reeuwijk, NL

Assignee:

Varco I/P, Inc. - Orange CA

International Classification:

E21B 19/06

US Classification:

175 52, 175 85, 166 7751

Abstract:

A pipe running tool for use in an oil drilling system and the like comprises a lower drive shaft adapted to engage a drive shaft of a top drive assembly for rotation therewith. The pipe running tool further includes a lower pipe engagement assembly which is driven to rotate by the lower drive shaft, and is designed to releasably engage a pipe segment in such a manner to substantially prevent relative rotation between the two. Thus, when the lower pipe engagement assembly is actuated to securely hold a pipe segment, the top drive assembly may be actuated to rotate the top drive output shaft, which causes the lower drive shaft and lower pipe engagement assembly to rotate, which in turn rotates the pipe segment.

US Patent:

7510006, Mar 31, 2009

Filed:

Jun 24, 2005

Appl. No.:

11/165692

Inventors:

Daniel Juhasz - Westminster CA, US
George Boyadjieff - Villa Park CA, US
Brian L. Eidem - Cerritos CA, US
Hans van Rijzingen - Etten-Leur, NL
Herman M. Kamphorst - Assen, NL
Hans Joachim Dietrich Böttger - Den Helder, NL
Gustaaf Louis van Wechem - Reeuwijk, NL
David Mason - Anaheim Hills CA, US
Ronaldus R. M. Roling - Rosmalen, NL

Assignee:

Varco I/P, Inc. - Orange CA

International Classification:

E21B 33/13

US Classification:

166291, 156 70, 1561774

Abstract:

An oil and gas well drilling system is provided that includes a top drive assembly having an output shaft; and a pipe running tool having a top drive extension shaft connected to the top drive output shaft and engageable with a pipe string to transmit translational and rotational forces from the top drive assembly to the pipe string, wherein the pipe running tool further includes a cementing pipe connected to the top drive extension shaft and having a fluid passageway which receives cement during a cementing operation.

US Patent:

7591304, Sep 22, 2009

Filed:

Jun 24, 2005

Appl. No.:

11/165691

Inventors:

Daniel Juhasz - Westminster CA, US
George Boyadjieff - Villa Park CA, US
Brian L. Eidem - Cerritos CA, US
Hans van Rijzingen - Etten-Leur, NL
Herman M. Kamphorst - Assen, NL
Hans Joachim Dieter Böttger - Den Helder, NL
Gustaaf Louis van Wechem - Reeuwijk, NL
David Mason - Anaheim Hills CA, US

Assignee:

Varco I/P, Inc. - Orange CA

International Classification:

E21B 19/16

US Classification:

166 7751, 166 851

Abstract:

A system for measuring desired drilling parameters of a pipe string during an oil and gas well drilling operation is provided that includes a top drive assembly; a pipe running tool engageable with the pipe string and coupled to the top drive assembly to transmit translational and rotational forces from the top drive assembly to the pipe string; and one or more measurement devices mounted to the pipe running tool for measuring the desired drilling parameters of the pipe string during the oil and gas well drilling operation.