Horizontal offline stand building system
US7992646B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 30, 2008 |
| Grant date | Aug 9, 2011 |
| Priority date | — |
| Expiry date | Nov 20, 2029 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B19/155
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A horizontal offline stand building system includes a substantially horizontal, elongate catwalk having a frame and a stand lifting arm. The catwalk has a top surface adapted to receive at least two tubulars aligned coaxially along a linear path in a make-up channel on said top surface. The tubulars are threaded together to form preferably at least a triple pipe stand in the make-up channel. The completed stand is then transferred laterally to a delivery channel containing the stand lifting arm. The stand lifting arm is selectively actuable lifting arm for selectively elevating a rig end of a pipe stand from said top surface of the catwalk to the deck of a drilling rig, and then for supporting the mid and rear sections as the stand is hoisted from the delivery channel up the derrick of the drilling rig.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.