Pressure management device for drilling system
AssigneeCitadel Drilling Ltd.
InventorsVitaliy Shpak, Elvin Mammadov, Hossein Khorshidian
Life of this patent
Estimating the term…
Abstract
A pressure management device (PMD) for direct connection to a blowout preventor stack of a managed pressure drilling system, the PMD comprising a housing, one or more chokes, and a directional valve. The directional valve has a choke position and a bypass position. When the directional valve is in the choke position, the PMD operates to divert fluid entering the housing to one or more of the chokes. When the directional valve is in the bypass position, the PMD operates to divert fluid entering the housing to bypass the chokes. The inlet and outlet of each choke may be controlled by a dual shutoff valve, to selectively permit and restrict fluid flow through each choke.
Claims20
A choke assembly comprising:
- a choke cartridge;
- a choke housing having a first end, a second end, a wall with an inner surface defining a chamber, and a choke inlet and a choke outlet extending through the wall and in fluid communication with the chamber, the first end having an opening providing open access to the chamber, and the chamber configured to removably receive at least a portion of the choke cartridge via the opening;
- and
- a dual shutoff valve in communication with one or both of the choke inlet and the choke outlet, the dual shutoff valve having a closed position in which the dual shutoff valve blocks one or both of the choke inlet and the choke outlet and having an open position in which the dual shutoff valve unblocks the choke inlet and the choke outlet.
A method comprising inserting a choke cartridge into a choke housing, via an open first end of the choke housing, the choke housing being operably coupled to a housing in fluid connection with a blowout preventor stack of a drilling system, wherein prior to inserting, aligning an alignment profile of the choke cartridge with an alignment profile of the choke housing or an alignment profile of a dual shutoff valve coupled to the choke housing, wherein inserting comprises engaging the alignment profile of the choke cartridge with the alignment profile of the choke housing or the alignment profile of the dual shutoff valve.
Dependencies are inferred from the claim text.