Patent · US Active

Blowout preventer shut-in assembly of last resort

US9033049B2 · kind B2 · utility

9Cited by

7References

29Claims

0Family size

Inventors

Johnnie E. Kotrla · Katy, US
Ross Stevenson · Magnolia, US
Johnny E. Jurena · Cypress, US
Paul Toudouze · Diemelstraße, US

Key dates

Filing date	Nov 10, 2011
Grant date	May 19, 2015
Priority date	—
Expiry date	Jul 6, 2033

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B41/0007
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A system for drilling and/or producing a subsea wellbore comprises a primary BOP comprising a primary ram BOP. In addition, the system comprises a secondary BOP releasably connected to the primary BOP, the secondary BOP comprising a secondary ram BOP. The primary rain BOP is actuatable by a first control signal. The secondary ram BOP is actuatable by a second control signal. The secondary rain BOP is not actuatable by the first control signal.

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