G - Physics – 01 – F
Patent
G - Physics
01
F
73/128, 259/43.5
G01F 1/74 (2006.01) B01F 5/08 (2006.01) E21B 47/10 (2006.01) G01F 1/36 (2006.01) G01F 13/00 (2006.01) G01F 15/00 (2006.01)
Patent
CA 1298486
A B S T R A C T HOMOGENISING AND METERING THE FLOW OF A MULTIPHASE MIXTURE OF FLUIDS 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 homogenisation. A non-obstructive method of homogenising 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 homogenisation 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 homogenising 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 homogenisers and flow meters do not block the passage of objects such as tools, logging devices, etc along a pipe.
530190
Schlumberger Canada Limited
Smart & Biggar
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