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Definition of Well Work Activity Requiring a Well Work Safety Permit



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CER 13283 Safety Case Guidelines
Definition of Well Work Activity Requiring a Well Work Safety Permit
As defined in the Petroleum Safety (Designation of Certain Classes of Petroleum Activity)
Regulation 2013, SI. 89 of 2013, any petroleum activity or discontinuance of a petroleum activity in relation to well is a designated activity and therefore needs a Well Work Safety Permit or a Production Safety Permit. To this end, Well Work Activity, which requires a Well Work Safety Permit before it can commence, is defined to be any petroleum activity that

Alters the pressure containment boundary of a well or

Introduces wire, cable or hollow pipe into a well. Examples of Well Work Activities include, but are not limited to

The addition of well control equipment to allow the safe access of equipment into the well (for example to temporarily introduce wire, cable or hollow pipe into the well in order to wireline);

The process used to fit a safety valve insert to substitute a failed safety valve in a well and

The temporary plugging of certain flow paths to allow the repair or replacement of Safety Critical Elements.

Digging, drilling, boring, or sinking of shafts for the purposes of raising petroleum
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If the Well Work Activity is being carried out by a Non-production Installation.
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If the Well Work Activity is being carried by a Production Installation.


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Completion of wells

Well interventions and workovers; and

Plugging, blocking, capping, or abandonment of any well whether temporarily or permanently. Fora well under a Production Safety permit, activities that do not change the normal pressure containment boundary of the well or introduce wire, cable or hollow pipe into the well are not Well Work Activities and can be carried on pursuant to being included Production Safety Case. Examples of such designated petroleum activities include, but are not limited to

Production through an existing completion

Formation stimulation operations where the pressure containment boundary is not altered, e.g. acidizing or chemical injection by bullheading; and

Well testing through an existing completion. If the above activities are being carried on from a non-production installation as, for example, part of a well test, they would need to be included in the combination of the Well Work Safety Case and the Non-production Safety Case.

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