Subsea pumping and booster system
AssigneeBaker Hughes Energy Technology UK Limited
InventorDaniel Gruenbaum Lemos
Life of this patent
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Abstract
A subsea pumping and booster system. The system comprises a pumping unit including two electric submersible pumps (ESPs) that are electrically connected by a parallel electrical connection having a first branch and a second branch extending to a respective one of the ESPs. The branches each comprise temperature sensors. The temperature sensors can be used to determine the currents being drawn by each ESP to improve the health and efficiency monitoring of the system. A related method and floating production storage and offloading (FPSO) unit connected to the system is also described.
Claims14
A subsea pumping and booster system, comprising:
- a pumping unit including two electric submersible pumps (ESPs) for receiving production fluid from a well and being operable to increase a pressure of the production fluid;
- wherein the two ESPs are electrically connected by a parallel electrical connection, the parallel electrical connection comprising:
- a splitter;
- a first branch extending from the splitter to a first of the two ESPs;
- and,
- a second branch extending from the splitter to a second of the two ESPs;
- wherein the first branch comprises a first temperature sensor, and the second branch comprises a second temperature sensor;
- and
- a processing unit configured to:
- receive temperature data from the first and second temperature sensors of the two ESPs and a measure of a total electrical current supplied to the splitter during operation;
- and,
- determine individual electrical currents being supplied to each of the first and second ESPs via the first and second branches, respectively, therefrom.
A method of determining individual currents being supplied to two ESPs in a subsea pumping and booster system, wherein the two electric submersible pumps (ESPs) are electrically connected by a parallel electrical connection comprising a splitter, a first branch extending from the splitter to a first of the two ESPs, and a second branch extending from the splitter to a second of the two ESPs, the method comprising:
- determining a first temperature (T1) of the first branch;
- determining a second temperature (T2) of the second branch;
- determining a total electrical current (Itotal) supplied to the splitter;
- calculating a first current (I1) being supplied to the first of the two ESPs via the first branch;
- and,
- calculating a second current (I2) being supplied to the second of the two ESPs via the second branch.
Dependencies are inferred from the claim text.