ASTM D 1250 Standard Guide for Use of the Petroleum Measurement Tables
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ASTM D 1250 Document Information:
Title
Standard Guide for Use of the Petroleum Measurement Tables
ASTM International
Publication Date:
May 1, 2007
Scope:
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 Volume Correction Factor (VCF). The
temperature portion of this
correction is termed the Correction for the effect of Temperature on
Liquid (CTL). The pressure
portion is termed the Correction for the effect of Pressure on Liquid
(CPL).
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
VCF values consistent with the 1980 Petroleum Measurement Tables.
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 a form that is
consistent with the
computation procedures used to generate VCF values. Two sets of
procedures are included for
computing volume correction factor: one set for data expressed in
customary units (temperature in
°F, pressure in psig); the other for the metric system of units
(temperature in °C,
pressure in kPa or bar). In contrast to the 1980 Petroleum Measurement
Tables, the metric
procedures require the procedure for customary units be used first to
compute density at 60°F.
This value is then further corrected to give the metric output. The
metric procedures now
incorporate the base temperature of 20°C in addition to 15°C.
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.
Keywords:
- crude oil
- density correction
- lubricants
- lubricating oils
- Petroleum Measurement Tables
- petroleum products
- volume correction
- volume correction factor
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