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US 8,464,582 B2Granted
Variable throat venturi flow meter having a plurality of section-varying elements
AssigneeSchlumberger Technology Corporation
InventorsGilles Roux, Céline Gabard-Cuoq, Stéphane Chareille, Pierre Mouget
Life of this patent
Estimating the term…
Abstract
A variable throat Venturi flow meter includes an upstream pipe section having an upstream cross-sectional area, a throat section having a variable throat cross-sectional area that is smaller than the upstream cross-sectional area, and a plurality of section-varying elements adapted to temporarily vary the throat cross-sectional area to allow a downhole tool to pass through the throat section.
Claims3
A method of measuring a flow rate in a well bore, the method comprising:
- deploying a variable throat Venturi flow meter in the wellbore, the variable throat Venturi flow meter comprising a throat section having a throat cross-sectional area that is variable between a first throat cross-sectional area and a second throat cross-sectional area, wherein the first throat cross-sectional area is smaller than the second throat cross-sectional area;
- determining the flow rate using pressure measurements provided by the variable throat Venturi flow meter when the throat section has the first throat cross-sectional area;
- and temporarily varying the throat cross-sectional area to have the second throat cross-sectional area to allow a downhole tool to pass through the throat section.
Dependencies are inferred from the claim text.