James R Light

Address:

15306 Ct Grn Trl, Cypress, TX 77433

VIN:

5N1BV28U37N103578

Make:

NISSAN

Model:

QUEST

Year:

2007

US Patent:

7044216, May 16, 2006

Filed:

Nov 5, 2003

Appl. No.:

10/605910

Inventors:

Gregory K. Otten - Houston TX, US
James Light - Katy TX, US
Chad Van Liere - Houston TX, US

Assignee:

Grant Prideco, L.P. - Houston TX

International Classification:

E21B 19/06
B68C 1/66

US Classification:

166 7752, 166 7514, 294 90

Abstract:

An elevator for assembling a plurality of a large diameter pipe joints into a pipe string with a drilling rig is disclosed. The first one of a number of large diameter pipe joints is adapted to threadingly engage another large diameter pipe joint. The elevator is detachably securable to the upper end of the first joint, and is adapted to both lift and position the first joint while it is stabbed and tightened onto the string. The elevator is further adapted to co-operatively engage the rotary table of the drilling rig to rotatably tighten the second joint to the first joint as the second joint is added to the string.