Patent ID: 9581475
Date: 2017-02-28
CPC Classifications: G01F

Claim:
1. A method for measuring one or more flow characteristics of a multiphase fluid flowing through a conduit, comprising: flowing the multiphase fluid flow through a first Venturi and a second Venturi; choking the multiphase fluid flow, wherein the multiphase fluid flow is choked at a location in the conduit between the first Venturi and the second Venturi; measuring a first pressure in a throat of the first Venturi; measuring a first differential pressure between the throat of the first Venturi and a first position in the conduit upstream or downstream of the throat of the first Venturi; measuring a second pressure in the throat of the second Venturi; measuring a second differential pressure between the throat of the second Venturi and a second position in the conduit upstream or downstream of the throat of the second Venturi; and using the first and the second pressures, the first and the second differential pressures and a slip approximation to process the one or more flow characteristics of the multiphase fluid flow.