Flow-X─ Function Reference
4-119
Flow-X General functions - fxAPI_SG60F_1952
11.2.1 rounding is enabled then the API gravity and temperature are rounded
and the calculations are performed in accordance with the rounding and
truncating rules of the standard.
6.
The CPL value is calculated from the compressibility factor and the 'Observed
pressure' and 'Equilibrium pressure' input values.
7.
The Specific Gravity at [60
F, equilibrium pressure] is calculated by dividing the
Observed Specific Gravity by the CTL and the new CPL value.
8.
Steps 2 through 7 are repeated taking the specific gravity value from step 7 as
the start value for the next iteration until the absolute difference between two
consecutive specific gravity values is 0.0001.
Conversion method 2: from standard to observed conditions.
The function performs straightforward calculations to determine the Specific Gravity at observed
conditions:
1.
The CTL value is calculated according to API 1952 Table 24
2.
Because API 11.2.1 requires the API gravity value at 60
F, the API gravity is
calculated from the 'Input Specific Gravity'.
3.
The compressibility factor is calculated according to API MPMS 11.2.1 from the
API gravity and the 'Observed temperature'. If API 11.2.1 rounding is enabled
then the input density and temperature are rounded and the calculations are
performed in accordance with the rounding and truncating rules of the
standard.
4.
The CPL value is calculated from the compressibility factor and the 'Observed
pressure' and 'Equilibrium pressure' input values.
5.
The output Specific Gravity (at observed temperature and pressure) is calculated
from the input Specific Gravity and the CTL and the CPL values.
Summary of Contents for flow-x
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