Chemicals
There may be chemical use/discharge requirements during well abandonment. These may be applied for by PON5 or covered within the drilling chemicals permit (PON15B) for the operation or by an installation-decommissioning permit (PON15D or PON15E).
However, in all cases, summary information must also be provided in the PON5 (see below).
Where application is by PON5 only, no further PON15 application will be required unless DECC wishes to discuss the use/discharge of any particular chemical.
Oily Discharges
Any deliberate release of oil (reservoir hydrocarbons only) planned during a well suspension or abandonment must be subject to an OPPC permit. Again application will be via the PON5 (see below)
Deposits to Seabed
In exceptional cases, a licence under Part II of FEPA may be required for deposits to the seabed (e.g. rock dumping to cover a wellhead), DECC is not intending to require FEPA licences for all suspension or well abandonment operations. Inclusion of information on the PON5 will enable DECC to make a decision whether a FEPA licence is also required. See Deposit of Stabilisation and Protection Materials
Explosives
If there are intentions to use explosives in abandonment operations, discussions must be held with DECC and JNCC to ensure that consideration is given to any habitats or species protected under the Offshore Petroleum Activities (Conservation of Habitats) Regulations 2001. See JNCC Guidance on Use of Explosives.
Consent to Locate
See Navigational Interference |