The facilities regulations § 53

§ 53 Equipment for completion and well flow

Equipment in the well and on the surface shall be designed to safeguard controlled flow during production, injection and well testing, cf. Section 12.
The flow line shall be equipped with necessary downhole safety valve. For permanently placed facilities, except for seabed wells, wells with flows of hydrocarbons in the annulus shall be equipped with an annulus safety valve.
During well testing using the work string, it shall be possible at any time to regulate the well stream through the work string and choke manifold.
Section last changed: 01 January 2022

In order to fulfil requirements relating to equipment for completion and testing of wells, the NORSOK D-010 standard Chapters 7, 8, 9, 15 and Annex C and D-007 should be used in the area of health, working environment and safety.
Design to handle controlled well flow as mentioned in the first subsection, means
  1. equipment used for production and injection of gas, fluids and solids,
  2. need for equipment in case of changes in preconditions, for instance, failure of barrier elements,
The equipment should be designed for well intervention, workover and plugging of wells and for collection of well data of significance to safety.
In order to meet the requirements for the downhole safety valve and the annulus safety valve, Chapters 8 and 9 of the NORSOK D-010 standard as well as tables EAC 8 and 9 in Annex C should be used.
Well testing as mentioned in the third subsection, means flow during formation testing, test production, clean-up and stimulation of the well.
See the Resource Management Regulations on formation strength testing.
For mobile facilities that are registered in a national ship register, DNV-OS-E101 Chapter 2, Section 5, Paragraph 9 may be used as an alternative.