Patent · US Expired

Coiled tubing apparatus

US5845708A · kind A · utility

30Cited by

4References

24Claims

0Family size

Assignee

Baker Hughes Holdings LLC · US

Inventors

Philip Burge · London, GB
Friedhelm Makohl · Hermannsburg, DE
Peter Fontana · London, GB

Key dates

Filing date	Mar 26, 1997
Grant date	Dec 8, 1998
Priority date	—
Expiry date	Mar 26, 2017

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B19/22
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

Apparatus for handling pipe, coiled tubing, casing and conventional tubing in well drilling and servicing operations.

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