Patent · US Active

Method and apparatus for retrieving a tubing from a well

US10563473B2 · kind B2 · utility

1Cited by

9References

10Claims

0Family size

Assignee

Qinterra Technologies AS · NO

Inventors

Marco Volgmann · Braunschweig, DE
Bard Martin Tinnen · Stavanger, NO

Key dates

Filing date	Jun 23, 2015
Grant date	Feb 18, 2020
Priority date	—
Expiry date	Aug 14, 2036

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B19/008
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

An interface tool and apparatus for retrieving a tubing from a well at least partly filled with a liquid, the tubing having first and second end portions. The apparatus includes an anchor for engaging tubing; sealing module for sealing first end portion of the bore of tubing; injector for injecting a low density fluid into tubing in or at an elevation below sealing module; and sealing cable connecting to a surface of the well. Apparatus includes first and second tool string sections, and interface tool configured for connecting first tool string section and second tool string section.

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