Patent · US Active

Tubular handling apparatus

US8365834B2 · kind B2 · utility

39Cited by

13References

23Claims

0Family size

Assignee

Weatherford/Lamb, Inc. · US

Inventors

Martin Liess · Seelze, DE
John D. Hooker, II · Houma, US
Reinhard Grosch · Geisa, DE
Thomas Kotschy · Burgdorf, DE
Andreas Carlsson · Skövde, SE

Key dates

Filing date	May 4, 2009
Grant date	Feb 5, 2013
Priority date	—
Expiry date	May 16, 2030

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B33/127
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

In one embodiment, a tubular gripping assembly for use with a top drive to handle a tubular includes a tubular gripping tool having a mandrel and gripping elements operatively coupled to the mandrel; and a link assembly attached to the mandrel, wherein a load of the link assembly is transferred to the mandrel. In another embodiment, the tubular gripping assembly includes a swivel having selectively actuatable seals. In yet another embodiment, the tubular gripping assembly includes a thread compensator to facilitate tubular make-up. In yet another embodiment, the tubular gripping assembly includes a wedge lock release apparatus to facilitate the release of gripping elements from the tubular.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.