This is an industry document, suggesting best practices in emissions reporting. It notes that offshore operators have had to submit emission reports in Norway since 1997. Air emissions reporting begins on page 42 (Sec. 7), and includes end-use combustion, flaring, and burning of oil and natural gas during well tests and well clean-up. The document provides emissions factors for different emitting activities (e.g., Sec. 7.1.9), as well as ways to calculate additional factors (e.g., Sec. 7.3.9)
The document also reflects that as of 2017, Norway began requiring reporting of direct emissions of methane and other volatile organic compounds from venting, direct emissions (emissions not sent to a metered vent), flaring, and recycling. (Sec. 7.1.7) The document lists detailed sources of each type of emission, and notes whether those sources are subject to the Norweigian carbon tax. A companion handbook focuses on these 2017 requirements.
A Handbook for quantifying direct methane and NMVOC emissions (Appendix B to the guidelines) was issued 23 January 2019.
This industry document suggests additional best practices in emissions reporting, focusing on requirements imposed as of 2017 (methane and VOC emissions, see above).