Subsea pumping system including a skid with wet matable electrical and hydraulic connections
A technique is provided for pumping fluid in subsea applications, such as booster pumping applications. A self-contained pumping module has a pump and a motor mounted on a skid. The self-contained pumping module also includes electrical connections by which electrical power can be provided to the motor and hydraulic connections for connecting suitable hydraulic lines with a pump intake and a pump discharge. The self-contained nature of the pumping module enables easy deployment to a sea floor in a variety of applications.
1. A pumping system for boosting fluid flow at a subsea location, comprising:
a self-contained pumping module having a plurality of components mounted in a single module so the self-contained pumping module can be lowered to a position resting on the seafloor in a single trip and retrieved from the seafloor in a single trip, the plurality of components comprising:
a skid;
a plurality of pumps mounted on the skid in a generally horizontal orientation;
a plurality of motors mounted on the skid, each motor of the plurality of motors being coupled to a corresponding pump of the plurality of pumps to increase flow rate, discharge pressure, or both flow rate and discharge pressure;
an electrical stab plate mounted on the skid and comprising a plurality of wet matable connections through which electric power is provided to the plurality of motors; and
a plurality of hydraulic connections in fluid communication with the plurality of pumps, the plurality of hydraulic connections being wet matable independently of the wet matable connections of the electrical stab plate and at a location separate from the wet matable connections of the electrical stab plate to enable easy connection of independent hydraulic lines.
2. The pumping system as recited in claim 1 , wherein the self-contained pumping module further comprises a mesh material positioned to engage a seafloor.
3. The pumping system as recited in claim 1 , wherein the skid is constructed from coated steel.
4. The pumping system as recited in claim 1 , wherein the plurality of pumps comprises a plurality of centrifugal pumps.
5. The pumping system as recited in claim 1 , wherein the plurality of motors comprises a plurality of three phase induction motors, the motors being hermetically sealed.
6. The pumping system as recited in claim 1 , wherein at least two pumps of the plurality of pumps are connected in parallel.
7. The pumping system as recited in claim 1 , wherein at least two pumps of the plurality of pumps are connected in series.
8. The pumping system as recited in claim 1 , wherein at least two pumps of the plurality of pumps are connected in parallel, and at least two pumps of the plurality of pumps are connected in series.
9. The pumping system as recited in claim 1 , wherein the self-contained pumping module further comprises at least one isolation valve positioned between pumps of the plurality of pumps.