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The Composite Oil calculation finds the
densitometer, turbine meter, prover and standard conditions for a
typical crude oil metering system.
Values for temperature and pressure can be
entered for three different locations, densitometer, turbine meter and
prover.
The density can be entered at densitometer,
turbine meter and prover. The flow rate or volume can be entered at
either the turbine meter, prover or to standard conditions.
Density and flow rate or volume are
calculated for each location using information on the fluid type with
the prover constants and either the API or Downer Compressibility
standard. Quantities can therefore be converted in the forwards
direction (from a location on the metering skid to standard
conditions) or backwards (from standard conditions to a location on
the metering skid) or between locations on the metering skid.
References
API2540 First Edition Aug 1980 MPMS Ch.
11.1, Volume correction factors.
Institute of Petroleum 200, September 1984
ANSI/ASTM D1250, 1993
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