Title:
QUADRUPLE RAM BOP
Document Type and Number:
WIPO Patent Application WO/2015/048076
Kind Code:
A3
Abstract:
A blowout preventer (10) having a body (38), a main bore (36) in the body, and rams (42, 44) that project into the main bore. The rams can be shear rams (42) for shearing a tubular in the main bore, pipe rams (44) for sealing around a tubular in the main bore, or sealing rams that seal across the main bore. The rams are in cavities (40, 43) formed in the body, the cavities are formed such that more than two rams can be disposed at the same elevation in the body thereby reducing the overall height of the blowout preventer stack.
Inventors:
SHAH VIRAL (US)
CHILDERS LEONARD G (US)
SHIRANI ALIREZA (US)
CHILDERS LEONARD G (US)
SHIRANI ALIREZA (US)
Application Number:
PCT/US2014/057132
Publication Date:
June 18, 2015
Filing Date:
September 24, 2014
Export Citation:
Assignee:
HYDRIL USA DISTRIB LLC (US)
International Classes:
E21B33/06
Domestic Patent References:
| WO2014009703A2 | 2014-01-16 |
Foreign References:
| US4526339A | 1985-07-02 | |||
| US3554480A | 1971-01-12 |
Attorney, Agent or Firm:
DOMBROWSKI, Joanna, M. et al. (Global Patent Operation3135 Easton Turnpik, Fairfield CT, US)
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