Skip to main content

The Energistics Consortium, an affiliate of The Open Group®, has published the Energistics Unit of Measure Standard v1.0.1. To download it from The Open Group Library, click here.

The purpose of the Energistics Unit of Measure (UOM) Standard is to provide the necessary components and guidelines to improve accuracy and consistency of implementation, usage, exchange, and conversion of units of measure related to all upstream oil and gas activities. 

The UOM Standard is a part of the Energistics Common Technical Architecture and used in all relevant Energistics standards, such as WITSML™, PRODML™, and RESQML™. Other industry groups and technologies use the standard, too, for example, The Open Group OSDU® Data Platform. 

This latest version: 

  • Adds a new unit required for a new property that was added to the latest version of the Practical Well Log Standard (PWLS) (For more information on PWLS, click here.) 
  • Includes JSON resources (schemas, dictionary files, etc.) in addition to the XML resources

First published in 2014, The Energistics UOM Standard represents the collaborative work of the Energistics Consortium, its member community, the Professional Petroleum Data Management (PPDM™) Association, and the Society of Exploration Geophysicists (SEG) to update previous standards and best practices for use of units of measure used in the upstream oil and gas industry. (A detailed list of previous specifications and standards included in the UOM Standard are listed in the documentation in the download file.)

Accurate use, exchange, and conversion of units of measure in upstream oil and gas software are crucial. Errors in units of measure can cause serious problems for the accuracy and integrity of earth and reservoir models and the decisions that are based on those models. 

About Energistics 
Energistics, a global, non-profit consortium, and affiliate of The Open Group, is a leading upstream oil and gas industry data standards body. Our mission is to bring together industry professionals in a neutral and collaborative environment, to develop and deploy open data transfer standards in the oil and gas ecosystem. Our members consist of international and national oil companies, oilfield service companies, hardware and software vendors, system integrators, regulatory agencies, and the global standards user community. For more information, visit our website at

About The Open Group
The Open Group is a global consortium that enables the achievement of business objectives through technology standards. Our diverse membership of more than 925 organizations includes customers, systems and solutions suppliers, tool vendors, integrators, academics, and consultants across multiple industries. Further information on The Open Group can be found at