Determining flow rates of multiphase fluids
AssigneeOneSubsea IP UK Limited
InventorHelge DALE
Life of this patent
Estimating the term…
Abstract
A method for determining flow rate of a multiphase fluid. The method includes measuring a first pressure differential (316) of the multiphase fluid flowing through a rotodynamic pump (310) operating at a rotational speed thereby driving the multiphase fluid, measuring a second pressure differential (326) of the multiphase fluid flowing through a portion (320) of a fluid conduit positioned in series with said rotodynamic pump, and determining, based on the first and second pressure differentials and the rotational speed of said rotodynamic pump, a flow rate of the multiphase fluid.
Claims24
A method for determining flow rate of a multiphase fluid comprising:
- measuring a first pressure differential of the multiphase fluid flowing through a rotodynamic pump operating at a rotational speed thereby driving the multiphase fluid;
- measuring a second pressure differential of the multiphase fluid flowing through a portion of a fluid conduit positioned in series with said rotodynamic pump;
- and
- determining, based on the first and second pressure differentials and the rotational speed of said rotodynamic pump, a flow rate of the multiphase fluid.
A system for determining flow rate of a multiphase fluid comprising:
- a rotodynamic pump configured to drive a multiphase fluid;
- a fluid conduit positioned in series with said rotodynamic pump and between a wellhead and a topside receiving facility;
- and
- a processing system configured to:
- receive a first pressure differential of the multiphase fluid flowing through said pump;
- receive a second pressure differential of the multiphase fluid flowing through a portion of said fluid conduit;
- receive a rotational pump speed at which the pump is operating;
- and
- determine, based on the first and second pressure differentials and the rotational pump speed, a flow rate of the multiphase fluid.
A method for determining flow rate of a multiphase fluid comprising:
- measuring a pressure differential of the multiphase fluid flowing through a rotodynamic pump operating at a first rotational speed thereby driving the multiphase fluid;
- determining a mixture density for the multiphase fluid flowing across a portion of a fluid conduit in series with the rotodynamic pump;
- and
- combining the differential flow rate, mixture density, and the rotational speed of the rotodynamic pump thereby determining a flow rate of the multiphase fluid.
Dependencies are inferred from the claim text.