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

Petroleum Measurement & Allocation Team

The NST’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 can be contacted at

Measurement Guidelines 

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

Related document

Click to on the items to download.

Related document

Click to on the items to download.

Policy Statements

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

Policy Statement – Maintenance Strategies (August 2015)

Policy Statement – Gas Day Change (October 2015)

The NSTA 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 NSTA Measurement Guidelines):

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

Petroleum Operations Notice 6 (PON 6)

A method of measurement must be agreed with the NSTA 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.

Memorandum of understanding 

Appendix 1 

Appendix 2 

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

Supplementary document

Annex 1