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Method and system for measuring fluid flow in bell nipples using pressure measurement

  • US 9,291,486 B2
  • Filed: 11/08/2011
  • Issued: 03/22/2016
  • Est. Priority Date: 11/24/2010
  • Status: Active Grant
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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