Patent · US Active

Plugging device

US11149522B2 · kind B2 · utility

10Cited by

1References

21Claims

0Family size

Assignee

NINE DOWNHOLE TECHNOLOGIES, LLC · US

Inventors

Viggo Brandsdal · Ytre Arna, NO
Geir Valestrand Aasheim · Ytre Arna, NO

Key dates

Filing date	Feb 20, 2020
Grant date	Oct 19, 2021
Priority date	—
Expiry date	Feb 20, 2040

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B33/1208
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A barrier plug assembly for sealing a subterranean wellbore arranged inside a tubing, the barrier plug assembly comprising: at least one frangible barrier element stacked on a carrier ring; a locking sleeve arranged above the carrier ring and located in a closed fluid chamber; a valve arranged on the closed fluid chamber and in pressure communication with the tubing, the valve configured or allowing or preventing pressure communication in between the tubing and the fluid chamber; a retaining device configured for locking the a carrier ring in place; a crushing element arranged a distance below the one frangible barrier element and configured for crushing the at least one frangible barrier element.

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