Measuring and testing – Volume or rate of flow – Using differential pressure
Reexamination Certificate
2008-02-22
2009-10-27
Thompson, Jewel (Department: 2855)
Measuring and testing
Volume or rate of flow
Using differential pressure
Reexamination Certificate
active
07607361
ABSTRACT:
Methods and apparatus enable measuring flow of a fluid within a conduit. For example, flowmeters may measure the velocity of production fluid flowing through production pipe of an oil/gas well. The flowmeters rely on detection of pressure variations generated as a result of a backward-facing step as a basis for flow measurement calculations. Pressure sensing occurs away from the step in a direction of the flow of the fluid in an enhanced turbulence region of the flowmeter where the inner diameter remains enlarged as a result of the step.
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Johansen Espen S.
Perry Leslie Wayne
Ramakrishnan Vijay
Rodriguez Daniel
Unalmis Omer Haldun
Patterson & Sheridan LLP
Thompson Jewel
Weatherford / Lamb, Inc.
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