ASTM D6377-15
(Test Method)Standard Test Method for Determination of Vapor Pressure of Crude Oil: VPCRx (Expansion Method)
Standard Test Method for Determination of Vapor Pressure of Crude Oil: VPCR<inf>x</inf > (Expansion Method)
SIGNIFICANCE AND USE
5.1 Vapor pressure of crude oil at various V/Ls is an important physical property for shipping and storage.
Note 2: A vapor-liquid ratio of 0.02:1 (X = 0.02) mimics closely the situation of an oil tanker.
5.2 Vapor pressure of crude oil is important to crude oil producers and refiners for general handling and initial refinery treatment.
5.3 The vapor pressure determined by this test method at a vapor-liquid ratio of 4:1 (VPCR4) of crude oil at 37.8 °C can be related to the vapor pressure value determined on the same material when tested by Test Method D323 (see Appendix X1).
5.4 Air saturation of crude oil shall not be done to avoid potential vapor loss. However air saturation of the chilled verification fluid is mandatory (see 7.2 and Section 11).
5.5 This test method can also be applied in online applications.
SCOPE
1.1 This test method covers the use of automated vapor pressure instruments to determine the vapor pressure exerted in vacuum of crude oils. This test method is suitable for testing samples that exert a vapor pressure between 25 kPa and 180 kPa at 37.8 °C at vapor-liquid ratios from 4:1 to 0.02:1 (X = 4 to 0.02).
Note 1: This test method is suitable for the determination of the vapor pressure of crude oils at temperatures from 0 °C to 100 °C and pressures up to 500 kPa, but the precision and bias statements (see Section 14) may not be applicable.
1.2 This test method allows the determination of vapor pressure for crude oil samples having pour points above 0 °C.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific warning statements, see 7.2.1 – 7.3.2.
General Information
Relations
Buy Standard
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D6377 − 15
StandardTest Method for
Determination of Vapor Pressure of Crude Oil:
1
VPCR (Expansion Method)
x
This standard is issued under the fixed designation D6377; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* D4177 Practice for Automatic Sampling of Petroleum and
Petroleum Products
1.1 This test method covers the use of automated vapor
D5191 Test Method for Vapor Pressure of Petroleum Prod-
pressureinstrumentstodeterminethevaporpressureexertedin
ucts (Mini Method)
vacuum of crude oils. This test method is suitable for testing
D5853 Test Method for Pour Point of Crude Oils
samples that exert a vapor pressure between 25 kPa and
D6708 Practice for StatisticalAssessment and Improvement
180 kPa at 37.8 °C at vapor-liquid ratios from 4:1 to 0.02:1 (X
of Expected Agreement Between Two Test Methods that
= 4 to 0.02).
Purport to Measure the Same Property of a Material
NOTE 1—This test method is suitable for the determination of the vapor
pressure of crude oils at temperatures from 0 °C to 100 °C and pressures
up to 500 kPa, but the precision and bias statements (see Section 14) may
3. Terminology
not be applicable.
3.1 Definitions:
1.2 This test method allows the determination of vapor
3.1.1 platinum resistance thermometer, n—temperature
pressure for crude oil samples having pour points above 0 °C.
measuring device constructed with a length of platinum wire,
1.3 The values stated in SI units are to be regarded as
whose electrical resistance changes in relation to temperature.
standard. No other units of measurement are included in this
3.1.2 vapor-liquid ratio (V/L), n—the ratio of the vapor
standard.
volumetotheliquidvolumeofspecimen,inequilibrium,under
1.4 This standard does not purport to address all of the
specified conditions.
safety concerns, if any, associated with its use. It is the
3.2 Definitions of Terms Specific to This Standard:
responsibility of the user of this standard to establish appro-
3.2.1 dead crude oil, n—crude oil with sufficiently low
priate safety and health practices and determine the applica-
vapor pressure that, when exposed to normal atmospheric
bility of regulatory limitations prior to use. For specific
pressure at room temperature, does not result in boiling of the
warning statements, see 7.2.1 – 7.3.2.
sample.
3.2.1.1 Discussion—Sampling and handling of dead crude
2. Referenced Documents
2 oils can usually be done without loss of sample integrity or
2.1 ASTM Standards:
other problems by using normal, non-pressurized sample
D323 TestMethodforVaporPressureofPetroleumProducts
containers such as cans.
(Reid Method)
3.2.2 live crude oil, n—crudeoilwithsufficientlyhighvapor
D2892 Test Method for Distillation of Crude Petroleum
pressure that it would boil if exposed to normal atmospheric
(15-Theoretical Plate Column)
pressure at room temperature.
D3700 Practice for Obtaining LPG Samples Using a Float-
ing Piston Cylinder 3.2.2.1 Discussion—Sampling and handling live crude oils
requires a pressurized sample system and pressurized sample
D4057 Practice for Manual Sampling of Petroleum and
Petroleum Products containers to ensure sample integrity and prevent loss of
volatile components.
1
This test method is under the jurisdiction of ASTM Committee D02 on 3.2.3 Reid vapor pressure equivalent (RVPE), n—a value
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of
calculatedbyadefinedcorrelationequation(seeEqX1.1)from
Subcommittee D02.08 on Volatility.
VPCR at37.8 °Cthatisexpectedtobeequivalenttothevapor
4
Current edition approved Oct. 1, 2015. Published October 2015. Originally
pressure value obtained by Test Method D323.
approved in 1999. Last previous edition approved in 2014 as D6377 – 14. DOI:
10.1520/D6377-15.
3.2.3.1 Discussion—As noted in 14.3 and Appendix X1,
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
subsection X1.2, since Eq X1.1 for estimating RVPE is not
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
universally applicable to all crude oils, it is recommended to
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. report the VPCR (38.7 °C) result for a crude oil sample.
4
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D6377 − 15
3.2.4 vapor pressure of crude oil (VPCR ,n—the pressure sampleintroductionintothemeasuringchamberande
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D6377 − 14 D6377 − 15
Standard Test Method for
Determination of Vapor Pressure of Crude Oil:
1
VPCR (Expansion Method)
x
This standard is issued under the fixed designation D6377; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope*
1.1 This test method covers the use of automated vapor pressure instruments to determine the vapor pressure exerted in vacuum
of crude oils. This test method is suitable for testing samples that exert a vapor pressure between 25 kPa and 180 kPa at 37.8 °C
at vapor-liquid ratios from 4:1 to 0.02:1 (X = 4 to 0.02).
NOTE 1—This test method is suitable for the determination of the vapor pressure of crude oils at temperatures from 0 °C to 100 °C and pressures up
to 500 kPa, but the precision and bias statements (see Section 14) may not be applicable.
1.2 This test method allows the determination of vapor pressure for crude oil samples having pour points above 0 °C.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory
limitations prior to use. For specific warning statements, see 7.2.1 – 7.3.2.
2. Referenced Documents
2
2.1 ASTM Standards:
D323 Test Method for Vapor Pressure of Petroleum Products (Reid Method)
D2892 Test Method for Distillation of Crude Petroleum (15-Theoretical Plate Column)
D3700 Practice for Obtaining LPG Samples Using a Floating Piston Cylinder
D4057 Practice for Manual Sampling of Petroleum and Petroleum Products
D4177 Practice for Automatic Sampling of Petroleum and Petroleum Products
D5191 Test Method for Vapor Pressure of Petroleum Products (Mini Method)
D5853 Test Method for Pour Point of Crude Oils
D6708 Practice for Statistical Assessment and Improvement of Expected Agreement Between Two Test Methods that Purport
to Measure the Same Property of a Material
3. Terminology
3.1 Definitions:
3.1.1 platinum resistance thermometer, n—temperature measuring device constructed with a length of platinum wire, whose
electrical resistance changes in relation to temperature.
3.1.2 vapor-liquid ratio (V/L), n—the ratio of the vapor volume to the liquid volume of specimen, in equilibrium, under specified
conditions.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 dead crude oil, n—crude oil with sufficiently low vapor pressure that, when exposed to normal atmospheric pressure at
room temperature, does not result in boiling of the sample.
1
This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of Subcommittee
D02.08 on Volatility.
Current edition approved Oct. 1, 2014Oct. 1, 2015. Published November 2014October 2015. Originally approved in 1999. Last previous edition approved in 20102014
as D6377 – 10.D6377 – 14. DOI: 10.1520/D6377-14.10.1520/D6377-15.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3.2.1.1 Discussion—
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D6377 − 15
Sampling and handling of dead crude oils can usually be done without loss of sample integrity or other problems by using normal,
non-pressurized sample containers such as cans.
3.2.2 live crude oil, n—crude oil with sufficiently high vapor pressure that it would boil if exposed to normal atmospheric
pressure at room temperature.
3.2.2.1 Discussion—
Sampling and handling live crude oils requires a pressurized sample system and pressurized sample containers to ensure sample
integrity and prevent loss of volatile components.
3.2.3 Reid vapor pressure equivalent (RVPE), n—a value calculated by a defined correlation equation (see Eq X1.1) from
VPCR at 37.8 °C that is expected to be equivalent to
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.