Pressure management device for drilling system
AssigneeOpla Energy 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.
Claims32
A pressure management device (PMD) for use in a drilling system having a blowout preventor (BOP) stack and a drill string, the PMD comprising:
- an inlet for direct fluid connection with the BOP stack;
- an outlet;
- a housing having defined therein a choke gut line, a first choke inlet passage, and a first choke outlet passage, the choke gut line configured to fluidly connect the inlet and the outlet;
- and
- a first choke having a first choke inlet and a first choke outlet, the first choke operably coupled to the housing such that the first choke inlet and first choke outlet are fluidly connected to the first choke inlet passage and the first choke outlet passage, respectively,
- the choke gut line bypassing the first choke, and
- the PMD having a PMD bypass position and a PMD single-choke position, wherein in the PMD single-choke position, the first choke inlet and the first choke outlet are open, and the choke gut line is blocked, to permit fluid communication between the inlet and the outlet through the first choke;
- and
- in the PMD bypass position, one or both of the first choke inlet and the first choke outlet are closed or the first choke is shut-in, and the choke gut line is unblocked, to permit fluid communication between the inlet and the outlet through the choke gut line.
A method comprising:
- connecting an inlet of a housing of a pressure management device (PMD) directly to a blowout preventor (BOP) stack of a drilling system, the housing having an outlet and having defined therein a choke gut line between the inlet and outlet;
- releasably attaching and fluidly connecting one or more chokes to the housing;
- and
- providing a flow path from the inlet to the outlet, wherein providing the flow path comprises one of:
- blocking the choke gut line and opening at least one choke of the one or more chokes to allow fluid communication between the at least one choke and the inlet and outlet;
- blocking the choke gut line, opening a first choke of the one or more chokes, and closing a second choke of the one or more chokes to allow fluid communication between the first choke and the inlet and outlet;
- and
- unblocking the choke gut line and closing the one or more chokes to restrict fluid communication between the one or more chokes and the inlet and outlet, and to allow fluid communication between the inlet and outlet via the choke gut line.
Dependencies are inferred from the claim text.