GPA Midstream’s Measurement & Quantity Determination group surveys and meets the needs of the midstream industry for technical information, procedures and standards relating to measurement, sampling and safe handling of natural gas and natural gas liquids. This committee meets two times per year, most commonly in April and October.
Measurement & Quantity Determination Committee Charter
Chair: Trevor Morrison, Western Midstream
Vice Chair: Keith Fry, Howard Measurement
Young Professionals Liaison: Jennifer James, Phillips 66
GPA Midstream Staff Liaison: Martin Erne
A typical committee member is an individual with appropriate job responsibilities and/or expertise relating to measurement, sampling and safe handling of natural gas and natural gas liquids. This committee accepts volunteers with appropriate experience, and members may also be assigned by a GPA Midstream member company.
Members of the committee have the opportunity to make an impact on industry standards affecting measurement and be actively informed of work on GPA Midstream standards. Networking opportunities are abundant with committee involvement, and committee members are able to share their own experiences and learn from others in the committee.
The committee has published the following standards, available in the GPA Midstream Publications area:
GPA 2145 - Table of Physical Properties for Hydrocarbons and Other Compounds of Interest to the Natural Gas Industry
GPA 2172 - Calculation of Gross Heating Value, Relative Density, Compressibility and Theoretical Hydrocarbon Liquid Content for Natural Gas Mixtures for Custody Transfer
GPA 8117 - A Simplified Vapor Pressure Correlation for Commercial NGLs
GPA 8173 - Method for Converting Mass Natural Gas Liquids and Vapor to Equivalent Liquid Volumes
GPA 8182 - Standard for Mass Measurement of Natural Gas Liquids and Other Hydrocarbons
GPA 8186 - Measurement of Liquid Hydrocarbon by Truck Scales
GPA 8195 - Tentative Standard for Converting Net Vapor Space Volumes to Equivalent Liquid Volumes
GPA 8217 - Temperature Correction for the Volume of NGL and LPG Tables GPA 23E, 24E, 53E, 54E, 59E, and 60E
GPA 2172 Update
GPA 8195 Update
GPA Midstream Standards Style Guide
Proposed WG: GPA Midstream Glossary Update
Proposed WG: Pipeline Fill and Pack Methodologies and Determination
TP 27 Conversion to GPA Midstream Standard
TP15 Conversion to GPA Midstream Standard
This committee works along and/or in conjunction with other organizations and individuals involved in natural gas liquids and gas measurement. Specific examples include relationships with the following organizations and a list of corresponding publications with which GPA has assisted:
API 9.4 MPMS – Continuous Density Measurement Under Dynamic (Flowing) Conditions
API 14.6 – Continuous Density Measurement Under Dynamic (Flowing) Conditions
API 14.8 – Manual of Petroleum Measurement Standards Chapter 14 - Natural Gas Fluids Measurement Section 8 - Liquefied Petroleum Gas Measurement
API 14.7 – Manual of Petroleum Measurement Standards/GPA 8182 – Mass Measurement of Natural Gas Liquids
API MPMS 11.2.4 – Manual of Petroleum Measurement Standards Chapter 11-Physical Properties Data Section 2 Part 4 - Temperature Correction for the Volume of NGL and LPG Tables 23E 24E 53E 54E 59E and 60E
TP25 – Temperature Correction for the Volume of Light Hydrocarbons, Tables 24E and 23E (Joint Publication)
TP27 – Temperature Correction for the Volume of NGL and LPG (Joint Publication)
GPA 2172 (API 14.5) – Calculation of Gross Heating Value, Relative Density, Compressibility and Theoretical Hydrocarbon Liquid Content for Natural Gas Mixtures for Custody Transfer (Joint Publication)
GPA 2172/AGA5 – Calculation of Gross Heating Value, Relative Density, Compressibility and Theoretical Hydrocarbon Liquid Content for Natural Gas Mixtures for Custody Transfer (Joint publication in progress)
TP27 – Temperature Correction for the Volume of NGL and LPG (Joint Publication)
TP25 – Temperature Correction for the Volume of Light Hydrocarbons, Tables 24E and 23E (Joint Publication)
Onshore Orders 4
Onshore Order 5
GPA 2145 – Table of Physical Properties for Hydrocarbons and Other Compounds of Interest to the Natural Gas Industry
GPA 2172 - Calculation of Gross Heating Value, Relative Density, Compressibility and Theoretical Hydrocarbon Liquid Content for Natural Gas Mixtures for Custody Transfer (Joint Publication in progress)
TP 17 – Table of Physical Properties of Hydrocarbons for Extended Analysis of Natural Gases (1988)
TP 27 – Temperature Correction for the Volume of NGL and LPG (Joint Publication)
