Calvin R Blankenship

US Patent:

7293607, Nov 13, 2007

Filed:

Jul 13, 2005

Appl. No.:

11/180254

Inventors:

Jeff A. Lambert - Conroe TX, US
James C. Garrett - Kingwood TX, US
Kenneth L. Cambern - Pampa TX, US
Joel M. Ferland - Pampa TX, US
Jay D. Furnish - Pampa TX, US
Donald W. Johnson - Pampa TX, US
Michael R. Zemanek - Pampa TX, US
James R. Cirone - Pampa TX, US
Calvin Blankenship - Lindsay OK, US

Assignee:

National-Oilwell, L.P. - Houston TX

International Classification:

E21B 19/00

US Classification:

166 7511, 166 851, 414540

Abstract:

A method and apparatus for positioning and supporting the work platform of a mobile workover rig is disclosed. The work platform of the preferred embodiment of the present invention utilizes a unique support structure and automated positioning system for positioning the work platform at the desired height above the wellhead equipment. The preferred embodiment of the present invention utilizes a specialized automated “pinning” system that secures the work platform at the desired height. Additionally, the present invention utilizes one or more support cylinders to position and support the work platform in the horizontal position over the wellhead equipment. The automated positioning and pinning system of the present invention is a unique system that significantly reduces the time required to position the work platform of a mobile workover rig in the operating position, as well as significantly reduces the risk of injury to rig personnel assisting in the positioning operations.

US Patent:

7546869, Jun 16, 2009

Filed:

Nov 12, 2007

Appl. No.:

11/938676

Inventors:

Jeff A. Lambert - Conroe TX, US
James C. Garrett - Kingwood TX, US
Kenneth L. Cambern - Pampa TX, US
Joel M. Ferland - Pampa TX, US
Jay D. Furnish - Pampa TX, US
Donald W. Johnson - Pampa TX, US
Michael R. Zemanek - Pampa TX, US
James R. Cirone - Pampa TX, US
Calvin Blankenship - Lindsay OK, US

Assignee:

National-Oilwell, L.P. - Houston TX

International Classification:

E21B 19/00

US Classification:

166 7511, 166 851, 414540

Abstract:

A method and apparatus for positioning and supporting the work platform of a mobile workover rig is disclosed. The work platform of the preferred embodiment of the present invention utilizes a unique support structure and automated positioning system for positioning the work platform at the desired height above the wellhead equipment. The preferred embodiment of the present invention utilizes a specialized automated “pinning” system that secures the work platform at the desired height. Additionally, the present invention utilizes one or more support cylinders to position and support the work platform in the horizontal position over the wellhead equipment. The automated positioning and pinning system of the present invention is a unique system that significantly reduces the time required to position the work platform of a mobile workover rig in the operating position, as well as significantly reduces the risk of injury to rig personnel assisting in the positioning operations.

US Patent:

8006751, Aug 30, 2011

Filed:

Oct 8, 2007

Appl. No.:

11/973491

Inventors:

Jeff A. Lambert - Conroe TX, US
James C. Garrett - Kingwood TX, US
Kenneth L. Cambern - Pampa TX, US
Joel M. Ferland - Pampa TX, US
Jay D. Furnish - Pampa TX, US
Donald W. Johnson - Pampa TX, US
Michael R. Zemanek - Pampa TX, US
James R. Cirone - Pampa TX, US
Calvin R. Blankenship - Lindsay OK, US

Assignee:

National-Oilwell, L.P. - Houston TX

International Classification:

E21B 19/00

US Classification:

166 7511, 166 851, 414540

Abstract:

A method and apparatus for positioning and supporting the work platform of a mobile workover rig is disclosed. The work platform of the preferred embodiment of the present invention utilizes a unique support structure and automated positioning system for positioning the work platform at the desired height above the wellhead equipment. The preferred embodiment of the present invention utilizes a specialized automated “pinning” system that secures the work platform at the desired height. Additionally, the present invention utilizes one or more support cylinders to position and support the work platform in the horizontal position over the wellhead equipment. The automated positioning and pinning system of the present invention is a unique system that significantly reduces the time required to position the work platform of a mobile workover rig in the operating position, as well as significantly reduces the risk of injury to rig personnel assisting in the positioning operations.