API Committee on Petroleum Measurement (COPM)

The API Committee on Petroleum Measurement (COPM) provides leadership in developing and maintaining cost effective, state of the art, hydrocarbon measurement standards and programs based on sound technical principles consistent with current measurement technology, recognized business accounting and engineering practices, and industry consensus. This is accomplished through the committee's and API’s leadership role in the national and international standardization community in the development, publication, promotion, and revision of petroleum measurement standards, through its subcommittee structure, and through elimination of duplicative efforts. The committee is supported by API's Standards and Training Group, whose mission is to meet the needs of API and the oil and natural gas industry by producing internationally-acceptable petroleum standards and training programs on a self-supporting basis. Below is a list of the subcommittees and the areas they work with.

Committee on Evaporation Loss Estimation
The Subcommittee on Evaporation Loss Estimation (CELE) develops, approves, and maintains publications that provide methods for determining evaporation losses and emissions during storage and transfer of crude petroleum and petroleum products, MPMS Chapter 19.

Committee on Gas Fluids Measurement
Calculation of Petroleum Quantities for NGL, MPMS Chapter 12
Natural Gas Fluids Measurement, MPMS Chapter 14
Allocation Measurement, MPMS Chapter 20
Electronic Gas Measurement, MPMS Chapter 21.1

Committee on Liquid Measurement
Tank Calibration, MPMS Chapter 2
Tank Gauging, MPMS Chapter 3
Proving Systems, MPMS Chapter 4
Metering, MPMS Chapter 5
Metering Assemblies, MPMS Chapter 6
Calculation of Petroleum Quantities, MPMS Chapter 12
Statistical Aspects of Measuring and Sampling, MPMS Chapter13
Measurement by Weight, MPMS Chapter 16
Crude by Truck, MPMS Chapter 18
Allocation, MPMS Chapter 20.1 (Joint with COGFM)
Flow Measurement- Electronic Liquid Measurement, MPMS Chapter 21.2

Committee on Measurement Accountability
Marine Measurement, MPMS, Chapter 17
Measurement Accountability
Loss Control of Petroleum and Petroleum Products Involving all Modes of Transportation

Committee on Measurement Quality
Temperature Determination, MPMS Chapter 7
Sampling, MPMS Chapter 8
Density Determination, MPMS Chapter 9
Sediment & Water Determination, MPMS Chapter 10
Physical Properties, MPMS Chapter 11
Statistics, MPMS Chapter 13
Use of SI Units, MPMS Chapter 15

Committee on Measurement Education & Training
The Subcommittee on Measurement Education & Training develops training programs based on current API measurement Standards.