Method and system for measuring fluid flow in bell nipples using pressure measurement
First Claim
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1. A method, comprising:
- deriving calibration data representing relationships between heights and densities of fluids within a bell nipple, and flow rates of the fluids through a flow line branched off the bell nipple;
measuring pressures of a fluid within the bell nipple with at least two pressure transducers vertically spaced apart along the bell nipple horizontally adjacent to the flow line;
calculating height and density of the fluid within the bell nipple based on the measured pressures; and
calculating volumetric flow rate and mass flow rate of the fluid through the flow line based on the calibration data and the calculated height and density.
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Abstract
The volumetric rate of flow out of a flow line (4) of a bell nipple (2) is a function of the pressure of the head of liquid (7) above the threshold of the intersection of the vertical pipe (3) and the flow line (4). A pressure which is related to that pressure is measured by a pressure transducer (10) which is mounted below the threshold. Density of the fluid (7) is inferred by using the measured pressure as an input to a trained neural network.
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Citations
4 Claims
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1. A method, comprising:
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deriving calibration data representing relationships between heights and densities of fluids within a bell nipple, and flow rates of the fluids through a flow line branched off the bell nipple; measuring pressures of a fluid within the bell nipple with at least two pressure transducers vertically spaced apart along the bell nipple horizontally adjacent to the flow line; calculating height and density of the fluid within the bell nipple based on the measured pressures; and calculating volumetric flow rate and mass flow rate of the fluid through the flow line based on the calibration data and the calculated height and density. - View Dependent Claims (2)
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3. A system, comprising:
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at least two pressure transducers vertically spaced apart along a bell nipple horizontally adjacent to a flow line branched off the bell nipple; data storage storing calibration data representing relationships between heights and densities of fluids in the bell nipple, and flow rates of the fluids through the flow line; and a processor in communication with the at least two pressure transducers and the data storage, wherein the processor is programmed to calculate; height and density of a fluid within the bell nipple based on measured pressures with the at least two pressure transducers; and volumetric flow rate and mass flow rate of the fluid through the flow line based on the calibration data and the calculated height and density. - View Dependent Claims (4)
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Specification