• There are no items in your cart
We noticed you’re not on the correct regional site. Switch to our AMERICAS site for the best experience.
Dismiss alert

BS ISO 91:2017

Current
Current

The latest, up-to-date edition.

Petroleum and related products. Temperature and pressure volume correction factors (petroleum measurement tables) and standard reference conditions
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

30-06-2017

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Sources and usage guidelines for volume correction
  factors
Annex A (informative) - Changes to previous standards
Annex B (normative) - Standard reference conditions
Annex C (informative) - Titles of petroleum measurement
        tables given in the API-ASTM-IP-GPA standards for
        volume correction factors
Annex D (informative) - Other volume corrections factors
        standards
Bibliography

Pertains to temperature volume correction factors, which allow users to convert volumes, measured at ambient conditions, to those at reference conditions for transactional purposes.

This document refers to temperature volume correction factors, which allow users to convert volumes, measured at ambient conditions, to those at reference conditions for transactional purposes. This document also refers to compressibility factors required to correct hydrocarbon volumes measured under pressure to the corresponding volumes at the equilibrium pressure for the measured temperature. Table 1 shows the defining limits and their associated units of correction factors referenced in this document for crude oil, refined products and lubricating oils. These values are shown in bold italics . Also shown in the table are the limits converted to their equivalent units (and, in the case of the densities, other base temperatures). Table2 shows defining limits of correction factors for light hydrocarbons (natural gas liquids and liquefied petroleum gases). Table1 Defining limits of correction factors for crude oil, refined products and lubricating oils Crude oil Refined products Lubricating oils Density, kg/m3 @ 60°F 610,6 to 1163,5 800,9 to 1163,5 Relative density @ 60°F 0,6112 to 1,16464 0,80168 to 1,1646 API gravity @ 60°F 100 to –10 45 to –10 Density, kg/m3 @ 15°C 611,16 to 1163,79 611,16 to 1163,86 801,25 to 1163,85 Density, kg/m3 @ 20°C 606,12 to 1161,15 606,12 to 1160,62 798,11 to 1160,71 Temperature, °C –50,00 to 150 Temperature, °F –58,0 to 302 Pressure, psig 0 to 1500 Pressure, kPa (gauge) 0 to 1,034 × 104 Pressure, bar (gauge) 0 to 103,4 60°F thermal expansion
factor (α60), per °F 230,3 × 10 − 6 to 930,0 × 10−6 α60, Per °C 414,0 × 10−6 to 1674,0 × 10−6 Table2 Defining limits of correction factors for light hydrocarbons (natural gas liquids and liquefied petroleum gases) Density, kg/m3 @ 60 °F Density, kg/m3 @ 15 °C Density, kg/m3 @ 20 °C 350,0 to 688,0 351,7 to 687,8 331,7 to 683,6 Temperature °C Temperature °F −46,0 to 93,0 −50,8 to 199,4 Pressure Saturation conditions (bubble point or saturation vapour
pressure) (see Note 2 to 4.1) This document also specifies standard reference conditions of pressure and temperature for measurements carried out on crude petroleum and its products, including liquefied petroleum gases (see AnnexB). This document excludes specifying standard reference conditions for natural gas which are given in ISO13443[15].

Committee
PTI/12
DevelopmentNote
Supersedes BS ISO 5024, BS 7340(1991), BS 6441(1993), 15/30295061 DC. (07/2017)
DocumentType
Standard
Pages
26
PublisherName
British Standards Institution
Status
Current
Supersedes

Standards Relationship
ISO 91:2017 Identical

API 1101 : LATEST MEASUREMENT OF LIQUID HYDROCARBONS BY POSITIVE DISPLACEMENT METER
GPA 2142 : 1957 STANDARD FACTORS FOR VOLUME CORRECTION AND SPECIFIC GRAVITY CONVERSION OF LIQUEFIED PETROLEUM GASES
ISO 91-2:1991 Petroleum measurement tables Part 2: Tables based on a reference temperature of 20 degrees C
ISO 13443:1996 Natural gas Standard reference conditions
IP 3 : 1949 AROMATIC CONTENT
ISO 91-1:1992 Petroleum measurement tables Part 1: Tables based on reference temperatures of 15 degrees C and 60 degrees F
API MPM CH11.2.1 : 1984 MANUAL OF PETROLEUM MEASUREMENT STANDARDS - COMPRESSIBILITY FACTORS FOR HYDROCARBONS: 0-90 DEGREES API GRAVITY RANGE
API MPM CH11.2.1M : 1984 MANUAL OF PETROLEUM MEASUREMENT STANDARDS - COMPRESSIBILITY FACTORS FOR HYDROCARBONS: 638-1074 KILOGRAMS PER CUBIC METER RANGE
API MPM CH11.5 CD : 0 MANUAL OF PETROLEUM MEASUREMENT STANDARDS - CHAPTER 11: PHYSICAL PROPERTIES DATA - SECTION 5: DENSITY/WEIGHT/VOLUME INTRACONVERSION - PART 1: CONVERSIONS OF API GRAVITY AT 60 DEGREES F; PART 2: CONVERSIONS FOR RELATIVE DENSITY (60/60 DEGREES F); PART 3: CONVERSIONS FOR ABSOLUTE DENSITY AT 15 DEGREES C
ISO 9770:1989 Crude petroleum and petroleum products Compressibility factors for hydrocarbons in the range 638 kg/m3 to 1 074 kg/m3

View more information
£186.00
Excluding VAT

Access your standards online with a subscription

Features

  • Simple online access to standards, technical information and regulations.

  • Critical updates of standards and customisable alerts and notifications.

  • Multi-user online standards collection: secure, flexible and cost effective.