Measuring and testing – Volume or rate of flow – Using differential pressure
Patent
1990-05-14
1990-12-04
Orsino, Joseph A.
Measuring and testing
Volume or rate of flow
Using differential pressure
73 611R, 73155, 73198, 7386104, 137896, G01F 1445
Patent
active
049744526
ABSTRACT:
It is often desirable to meter multiphase fluid flow in pipes (e.g. bore holes). In order to obtain reliable/accurate flow rate measurements it is known to incorporate obstructions in the flow path to cause homogenization. A non-obstructive method of homogenizing the flow of a multiphase mixture of fluids in a bore hole comprises providing in the bore hole a pipe section which has an internal surface with a step discontinuity, whereby when fluid flows through the pipe section, turbulent stresses are caused by the discontinuity, leading to homogenization by turbulent mixing. There is disclosed a flow meter which comprises a pipe length with a first section having a step change in cross-section for homogenizing fluid flow therethrough, in series with a venturi flow meter in which a differential pressure can be measured in a second pipe section having a smooth change in cross-section. Non-obstructive homogenizers and flow meters do not block the passage of objects such as tools, logging devices, etc along a pipe.
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Bradbury Leslie
Hunt Andrew
DuPont Henri
Orsino Joseph A.
Ryberg John J.
Schlumberger Technology Corporation
Swarthout Brent A.
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