Oil and gas: measurement of petroleum

Guidance on OGA’s requirements for ‘good oilfield practice’ in fiscal oil and gas measurement; approval process for new developments (including fields shared with Norway)

This guidance was withdrawn on

The Oil & Gas Authority launched a new website on 3 October 2016 to reflect its new status as a government company.

This formalises the transfer of the Secretary of State’s regulatory powers in respect of oil and gas to the OGA, and grants it new powers. This website will no longer be updated. Visitors should refer to

Petroleum Measurement & Allocation Team

The OGA’s Petroleum Measurement & Allocation Team is responsible for ensuring that UK licensees continue to follow ‘good oilfield practice’ in the measurement of all petroleum won and saved from licensed areas in the UK and on the UK Continental Shelf (UKCS).

The team’s contact details are as follows:

For general communications the Email should be used.

Measurement Guidelines (Issue 9.2 – October 2015)

The OGA’s expectations with regard to ‘good oilfield practice’ are defined in the Measurement Guidelines document:

Measurement guidelines

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Policy Statements

OGA occasionally updates its policy on specific areas of fiscal oil & gas measurement. Details of these policy changes can be found in the respective statements.

The OGA Reporting Pro Forma

The following pro forma are available for download (reference is made to the relevant section of Issue 9.2 of the the OGA Measurement Guidelines):

Pro-forma Guidelines Ref.
Dispensation Request (MS Word Document, 110 KB) 3.2.1
Dispensation Database (MS Excel Spreadsheet, 98.8 KB) 3.2.4
Permanent Deviation Request (MS Word Document, 110 KB) 3.3
Inspection Finding Database (MS Excel Spreadsheet, 99.1 KB) 3.5.5
Offshore Loading (MS Excel Spreadsheet, 102 KB) 6.14.5

Petroleum Operations Notice 6 (PON 6)

A method of measurement must be agreed with the OGA for new field developments or modifications to the measurement method used in existing fields. Detailed guidance on the Petroleum Operations Notice 6 procedure can be found in Chapter 2 of the Measurement Guidelines.

Memorandum of Understanding – UK/Norway

In recent years there has been a sharp increase in the rate of development of cross-border fields in the North Sea. The UK Government has a Memorandum of Understanding (MOU) with the Government of Norway.

In 2006, a Supplementary Document was agreed by both parties, the relevant measurement systems are listed in Annex 1

Published 28 December 2012
Last updated 5 October 2015 + show all updates
  1. Policy statements - (added)

  2. Oil and gas: Measurement - DECC Reporting Pro Forma for download - (added)

  3. Oil and gas: Measurement guidance final version 9 - (added)

  4. Oil and Gas: Patrick Arnould contact details added

  5. Oil and gas: Measurement of petroleum - Draft Measurement guidelines version 9 - (added)

  6. First published.