ASTM D6377-10

Standard Test Method for Determination of Vapor Pressure of Crude Oil: VPCR_x (Expansion Method)

SIGNIFICANCE AND USE
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.
Vapor pressure of crude oil is important to crude oil producers and refiners for general handling and initial refinery treatment.
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).  
Chilling and air saturation of the sample prior to the vapor pressure measurement is not required.
This test method can be applied in online applications in which an air saturation procedure prior to the measurement cannot be performed.
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 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 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

• Status: Historical
• Publication Date: 30-Sep-2010
• ICS: 75.020 - Extraction and processing of petroleum and natural gas
• ICS: 75.040 - Crude petroleum
• Technical Committee: D02 - Petroleum Products, Liquid Fuels, and Lubricants
• Drafting Committee: D02.08 - Volatility

Relations

• Replaces: ASTM D6377-08 - Standard Test Method for Determination of Vapor Pressure of Crude Oil: VPCR_x (Expansion Method)
• Effective Date: 01-Oct-2010
• Replaced By: ASTM D6377-14 - Standard Test Method for Determination of Vapor Pressure of Crude Oil: VPCR<inf>x</inf >&#8201;&#40;Expansion Method&#41;
• Effective Date: 01-Oct-2014
• Referred By: ASTM D8253-21 - Standard Test Method for Determination of the Asphaltene Solvency Properties of Bitumen, Crude Oil, Condensate and/or Related Products for the Purpose of Calculating Stability, Compatibility for Blending, Fouling, and Processibility (Manual Microscopy Method)
• Effective Date: 01-Oct-2010
• Referred By: ASTM D5191-22 - Standard Test Method for Vapor Pressure of Petroleum Products and Liquid Fuels (Mini Method)
• Effective Date: 01-Oct-2010
• Referred By: ASTM D4057-22 - Standard Practice for Manual Sampling of Petroleum and Petroleum Products
• Effective Date: 01-Oct-2010
• Referred By: ASTM D8236-18 - Standard Practice for Preparing an Equilibrium Liquid/Vapor Sample of Live Crude Oil, Condensates, or Liquid Petroleum Products Using a Manual Piston Cylinder for Subsequent Liquid Analysis or Gas Analysis
• Effective Date: 01-Oct-2010
• Referred By: ASTM D323-20a - Standard Test Method for Vapor Pressure of Petroleum Products (Reid Method)
• Effective Date: 01-Oct-2010
• Referred By: ASTM D8003-22 - Standard Test Method for Determination of Light Hydrocarbons and Cut Point Intervals in Live Crude Oils and Condensates by Gas Chromatography
• Effective Date: 01-Oct-2010
• Referred By: ASTM D8009-22 - Standard Practice for Manual Piston Cylinder Sampling for Volatile Crude Oils, Condensates, and Liquid Petroleum Products
• Effective Date: 01-Oct-2010
• Referred By: ASTM D7975-22 - Standard Test Method for Determination of Vapor Pressure of Crude Oil: <brk/>VPCR<inf >x</inf>-F(Tm°C) (Manual Expansion Field Method)
• Effective Date: 01-Oct-2010

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 − 10
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* D4057 Practice for Manual Sampling of Petroleum and
Petroleum Products
1.1 This test method covers the use of automated vapor
D4177 Practice for Automatic Sampling of Petroleum and
pressureinstrumentstodeterminethevaporpressureexertedin
Petroleum Products
vacuum of crude oils. This test method is suitable for testing
D5191 Test Method for Vapor Pressure of Petroleum Prod-
samples that exert a vapor pressure between 25 and 180 kPa at
ucts (Mini Method)
37.8°Catvapor-liquidratiosfrom4:1to0.02:1(X=4to0.02).
D5853 Test Method for Pour Point of Crude Oils
NOTE 1—This test method is suitable for the determination of the vapor
D6708 Practice for StatisticalAssessment and Improvement
pressure of crude oils at temperatures from 0 to 100°C and pressures up
to 500 kPa, but the precision and bias statements (see Section 14) may not
of Expected Agreement Between Two Test Methods that
be applicable.
Purport to Measure the Same Property of a Material
1.2 This test method allows the determination of vapor
3. Terminology
pressure for crude oil samples having pour points above 0°C.
3.1 Definitions:
1.3 The values stated in SI units are to be regarded as
3.1.1 platinum resistance thermometer, n—temperature
standard. No other units of measurement are included in this
measuring device constructed with a length of platinum wire,
standard.
whose electrical resistance changes in relation to temperature.
1.4 This standard does not purport to address all of the
3.1.2 vapor-liquid ratio (V/L), n—the ratio of the vapor
safety concerns, if any, associated with its use. It is the
volumetotheliquidvolumeofspecimen,inequilibrium,under
responsibility of the user of this standard to establish appro-
specified conditions.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. For specific 3.2 Definitions of Terms Specific to This Standard:
warning statements, see 7.2.1 – 7.3.2. 3.2.1 dead crude oil—a term usually employed for crude
oils that, when exposed to normal atmospheric pressure at
2. Referenced Documents
room temperature, will not result in actual boiling of the
2
2.1 ASTM Standards: sample.
3.2.1.1 Discussion—Sampling and handling of dead crude
D323 TestMethodforVaporPressureofPetroleumProducts
(Reid Method) oils can usually be done without problems in normal, non-
pressurized sample containers, such as cans and so forth.
D2892 Test Method for Distillation of Crude Petroleum
(15-Theoretical Plate Column)
3.2.2 live crude oil—a term usually employed for crude oils
D3700 Practice for Obtaining LPG Samples Using a Float-
contained in pressurized systems that, when brought to normal
ing Piston Cylinder
atmospheric pressure at room temperature, will result in actual
boiling of the sample.
1 3.2.2.1 Discussion—Sampling and handling of samples of
This test method is under the jurisdiction of ASTM Committee D02 on
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of livecrudeoilswillnecessitatetheuseofpressurecylindersand
Subcommittee D02.08 on Volatility.
preclude the use of normal sample containers, such as cans and
Current edition approved Oct. 1, 2010. Published November 2010. Originally
so forth.
approved in 1999. Last previous edition approved in 2008 as D6377–08. DOI:
10.1520/D6377-10.
3.2.3 Reid vapor pressure equivalent (RVPE)—a value cal-
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
culated by a defined correlation equation (see 14.3) from
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
VPCR ,thatisexpectedtobecomparabletothevaporpressure
Standards volume information, refer to the standard’s Document Summary page on 4
the ASTM website. value obtained by Test Method D323.
*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 − 10
3.2.4 vapor pressure of crude oil (VPCR ,n—the pressure sampleintroductionintothemeasuringchamberandexpansion
x)
exerted in an evacuated chamber at a vapor-liquid ratio of X:1 to the desired V/L. A static pressure transducer shall be
by conditioned or unconditioned crude oil, which may contain incorporated in the piston. The measuring cham
...

This document is not anASTM standard and is intended only to provide the user of anASTM 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:D6377–08 Designation:D6377–10
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 and 180 kPa at 37.8°C at
vapor-liquid ratios from 4:1 to 0.02:1 (X=4to 0.02).
NOTE 1—This test method is suitable for the determination of the vapor pressure of crude oils at temperatures from 0 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—a term usually employed for crude oils that, when exposed to normal atmospheric pressure at room
temperature, will not result in actual boiling of the sample.
3.2.1.1 Discussion—Sampling and handling of dead crude oils can usually be done without problems in normal, non-
pressurized sample containers, such as cans and so forth.
3.2.2 live crude oil—a term usually employed for crude oils contained in pressurized systems that, when brought to normal
atmospheric pressure at room temperature, will result in actual boiling of the sample.
3.2.2.1 Discussion—Sampling and handling of samples of live crude oils will necessitate the use of pressure cylinders and
1
This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products and Lubricants and is the direct responsibility of Subcommittee D02.08 on
Volatility.
Current edition approved JulyOct. 1, 2008.2010. Published August 2008.November 2010. Originally approved in 1999. Last previous edition approved in 20032008 as
D6377–03.D6377–08. DOI: 10.1520/D6377-108.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*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 ----------------------
D6377–10
preclude the use of normal sample containers, such as cans and so forth.
3.2.3 Reid vapor pressure equivalent (RVPE)—avaluecalculatedbyadefinedcorrelationequation(see14.3)fromVPCR ,that
4
is expected to be comparable to the vapor pressure value obtained by Test Method D323
...