D1250-07 1.1 The API
MPMS Chapter 11.1-2004/Adjunct to IP 200/04/Adjunct to ASTM D
1250-04 (ADJD1250CD) for temperature and pressure volume correction
factors for generalized crude oils, refined products, and lubricating
oils, provides the algorithm and implementation procedure for the
correction of temperature and pressure effects on density and volume of
liquid hydrocarbons. Natural gas liquids (NGLs) and liquefied petroleum
gases (LPGs) are excluded from consideration. The combination of density
and volume correction factors for both temperature and pressure is
collectively referred to in the standard/adjunct(s) as a Correction for
Temperature and Pressure of a Liquid (CTPL). The temperature portion of
this correction is termed the Correction for the effect of Temperature
on Liquid (CTL), also historically known as VCF (Volume Correction
Factor). The pressure portion is termed the Correction for the effect of
Pressure on Liquid (CPL). As this standard will be applied to a variety
of applications, the output parameters specified in this standard/adjunct(s)
(CTL, F 1.2 Including
the pressure correction in API MPMS Chapter 11.1-2004/Adjunct to
IP 200/04/Adjunct to ASTM D 1250-04 (ADJD1250CD) represents an important
change from the "temperature only" correction factors given in the 1980
Petroleum Measurement Tables. However, if the pressure is one atmosphere
(the standard pressure) then there is no pressure correction and the
standard/adjunct(s) will give CTL values consistent with the 1980
Petroleum Measurement Tables. 1.3 API MPMS
Chapter 11.1-2004/Adjunct to IP 200/04/Adjunct to ASTM D 1250-04
(ADJD1250CD) covers general procedures for the conversion of input data
to generate CTL, F 1.4 The
procedures recognize three distinct commodity groups: crude oil, refined
products, and lubricating oils. A procedure is also provided for
determining volume correction for special applications where the
generalized commodity groups' parameters may not adequately represent
the thermal expansion properties of the liquid and a precise thermal
expansion coefficient has been determined by experiment.
Standard Test Method for
Use of the
Petroleum Measurement Tables
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