Environmental Legislation Website This Page Last Updated 29 October, 2008
Drilling a Well - Consent Requirements

An Environmental Statement is required for any drilling in near shore or sensitive areas. Drilling associated with a new development is also likely to require an ES. If unsure whether an ES is required or not, discussions should be held with DECC or a PON15 can be used to seek a dispensation from the requirement of an ES. If at all unsure, time should be allowed for preparation of an ES.

ES Required
 
No ES Required
Action Needed

12+ months

 

 

-

 

If required, submit PON15 to determine requirement for an Environmental Statement. This step can be skipped if it is clear that an ES is or is not required.
Undertake Environmental Assessment (EA) and prepare ES
Identify if proposed drilling occurs in vicinity of any habitats or protected species under EU Habitats Directive. Additional measures and an appropriate assessment may be required.

If no asset-wide Oil Spill Contingency Plan in place, prepare OSCP.

4 months

4 months

3 months

3 months

Prepare Chemical Permit Application (PON15B) and environmental information sections if no ES being prepared , include any chemical use/discharge associated with well cleanup if applicable .

-

Submit ES along with Application for Consent (PON16).

2 months

2 months

Submit OSCP to DECC for approval.

10 weeks

10 weeks

If spud can stabilisation required, submit application for exemption under FEPA85 to deposit material on the seabed.

3-5 weeks

3-5 weeks

If reinjection of cuttings planned offsite, submit application for reinjection under FEPA85.

28 days

28 days

Submit Chemical Permit Application (PON15B). (Note: Ensure chemicals selected are registered with CEFAS and those of high environmental risk are replaced as far as possible).
Submit PON4 (Consent to Drill Well).
Make application to DTLR for Consent to Locate for rig
If drilling through pay-zone and reservoir hydrocarbon contamination of drill cuttings for overboard discharge expected, apply for OPPC Permit. . OPPC Permit may also be required if OBM well cleanup is expected or any oil contamination of WBM/SBM cleanup

1 week

1 week

Any radioactive sources will need a Certificate of Registration.

Spud Date

 
Key Compliance During Drilling

Ensure compliance with any licence, exemption or consent conditions, including any commitments made in ES.

Ensure any required spill prevention and oil spill response procedures are introduced to rig personnel and appropriate equipment is in place.

Use only the permitted chemicals and mud system.

Cuttings discharged must have no greater than 1% contamination of SBM or OBM, which effectively means no overboard discharge of OBM or SBM contaminated cuttings with current cleaning technologies. Ensure that the agreed method of disposal is followed.

If reinjecting cuttings, ensure alternative legal disposal methods are in place as back up if CRI fails.

Routinely monitor base fluid use and discharge and sample and analyse the cuttings for oil content during drilling. Report findings of the sampling and analysis to DECC.

Use technology and other techniques to prevent or reduce discharges of all chemicals. Monitor all use and discharge of chemicals and report quantities via EEMS reporting.

Ensure compliance with OPPC. consider the implications of well cleanup and the need to minimise the possibility of OBM or SBM contaminated fluid being discharged. If discharging cuttings overboard ensure no contamination with oil from the payzone unless appropriate OPPC Permit is in place.

Undertaken any seabed environmental surveys as required by DECC.

Report any accidental discharge of oil, including OBM or SBM, to DECC.

Report any accidental discharge of chemicals, including drilling muds, to DECC.

Undertake all statutory reporting and EEMS reporting for each activity.

Rig Compliance (Non-Drilling)

It may be necessary to undertake a pre-mobilisation audit of the drilling rig to ensure environmental compliance for drilling operations and other non-drilling routine operations.

Machinery space drainage. Ensure oil content of discharge meets legal performance standard of 15 ppm (oil in water). Ensure Oil Record Book maintained.

Diesel engines and generators. Maintain record of fuel use.

No limits on sewage and cooling water discharges.

No garbage (including plastic) to be disposed of overboard. Only comminuted food waste to be discharged.

Ensure compliance with all waste disposal licences and waste transfer documentation requirements for scrap metal and non-hazardous waste. Reuse or recycling is the preferred option.

Ensure compliance with legislation for disposal of drill cuttings, including reinjection , overboard disposal (WBM only) or transfer to shore.

 

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