Stephen Randolph Norris

US Patent:

6427776, Aug 6, 2002

Filed:

Mar 27, 2000

Appl. No.:

09/536937

Inventors:

Corey E. Hoffman - Magnolia TX
Richard Lee Giroux - Katy TX
Mike A. Luke - Houston TX
Stephen J. Norris - League City TX

Assignee:

Weatherford/Lamb, Inc. - Houston TX

International Classification:

E21B 3708

US Classification:

166311, 166 99, 166222, 166167

Abstract:

The present invention provides a simple debris removal apparatus for use in a wellbore. In one aspect of the invention a modular, interchangeable venturi is provided which can be retrofit into an existing debris bailer having a filter and a debris collection container. In another aspect of the invention, a venturi is utilized to create a negative pressure in a wellbore sufficient to actuate a retrieval tool for a downhole device. In yet another aspect of the invention, a combination tool is provided which can evacuate debris in a wellbore, thereby uncovering a downhole device which can then be removed in a single trip. In yet another aspect of the invention, a debris removal apparatus is provided with a method for utilizing the apparatus in a wellbore on coiled tubing.

US Patent:

6640904, Nov 4, 2003

Filed:

Jun 6, 2002

Appl. No.:

10/163814

Inventors:

Corey E. Hoffman - Magnolia TX
Richard Lee Giroux - Katy TX
Mike A. Luke - Houston TX
Stephen J. Norris - League City TX

Assignee:

Weatherford/Lamb, Inc. - Houston TX

International Classification:

E21B 3120

US Classification:

166381, 166 99, 166167, 166222

Abstract:

A simple debris removal apparatus for use in a wellbore. In one aspect of the invention a modular, interchangeable venturi is provided which can be retrofit into an existing debris bailer having a filter and a debris collection container. In another aspect of the invention, a venturi is utilized to create a negative pressure in a wellbore sufficient to actuate a retrieval tool for a downhole device. In yet another aspect of the invention, a combination tool is provided which can evacuate debris in a wellbore, thereby uncovering a downhole device which can then be removed in a single trip. In yet another aspect of the invention, a debris removal apparatus is provided with a method for utilizing the apparatus in a wellbore on coiled tubing.

US Patent:

6719056, Apr 13, 2004

Filed:

Mar 14, 2003

Appl. No.:

10/388869

Inventors:

Corey E. Hoffman - Magnolia TX
Richard Lee Giroux - Katy TX
Mike A. Luke - Houston TX
Stephen J. Norris - League City TX

Assignee:

Weatherford/Lamb, Inc. - Houston TX

International Classification:

E21B 3700

US Classification:

166312, 166301

Abstract:

The present invention provides a simple debris removal apparatus for use in a wellbore. In one aspect of the invention a modular, interchangeable venturi is provided which can be retrofit into an existing debris bailer having a filter and a debris collection container. In another aspect of the invention, a venturi is utilized to create a negative pressure in a wellbore sufficient to actuate a retrieval tool for a downhole device. In yet another aspect of the invention, a combination tool is provided which can evacuate debris in a wellbore, thereby uncovering a downhole device which can then be removed in a single trip. In yet another aspect of the invention, a debris removal apparatus is provided with a method for the apparatus in a wellbore on coiled tubing.

US Patent:

6978841, Dec 27, 2005

Filed:

Mar 24, 2004

Appl. No.:

10/807728

Inventors:

Corey E. Hoffman - Magnolia TX, US
Richard Lee Giroux - Katy TX, US
Mike A. Luke - Houston TX, US
Stephen J. Norris - League City TX, US

Assignee:

Weatherford/Lamb, Inc. - Houston TX

International Classification:

E21B034/08

US Classification:

166381, 166222, 166319

Abstract:

A simple debris removal apparatus for use in a wellbore. In one aspect of the invention a modular, interchangeable venturi is provided which can be retrofit into an existing debris bailer having a filter and a debris collection container. In another aspect of the invention, a venturi is utilized to create a negative pressure in a wellbore sufficient to actuate a retrieval tool for a downhole device. In yet another aspect of the invention, a combination tool is provided which can evacuate debris in a wellbore, thereby uncovering a downhole device which can then be removed in a single trip. In yet another aspect of the invention, a debris removal apparatus is provided with a method for utilizing the apparatus in a wellbore on coiled tubing.