S-34.1, r. 1 - Regulation respecting petroleum exploration, production and storage in a body of water

Schedule Disposition versions

2018-09-20

SCHEDULE 3

CLASSIFICATION OF A WELL’S RISK POTENTIAL

During the classification of a well’s risk potential, if a well meets the criteria of the various levels of risks, the highest risk must take precedence.

Classification of the wells	Type of well	Geology	Status before the temporary closure
Low risk	Gas well ˂ 28,000 m3/day	Non-problematic geological formations	Non-problematic well
	Oil well without flow and without H2S		Well whose pressures are controlled
	Tube well with a content in H2S ˂ 5%, non-perforated
Moderate risk	Gas well ≥ 28,000 m3/day	Problematic geological formations (example: karsts)	Problems documented and not controlled (example: communication between adjacent wells)
	Oil well without flow and with a content in  H2S ≥ 5%
	Oil well with flow
	Injection well
High risk	Well containing gas with a content in H2S ≥ 5%	Not applicable	Not applicable
	Sour gas well

O.C. 1251-2018, Sch. 3.

Not in force

SCHEDULE 3

CLASSIFICATION OF A WELL’S RISK POTENTIAL

During the classification of a well’s risk potential, if a well meets the criteria of the various levels of risks, the highest risk must take precedence.

Classification of the wells	Type of well	Geology	Status before the temporary closure
Low risk	Gas well ˂ 28,000 m3/day	Non-problematic geological formations	Non-problematic well
	Oil well without flow and without H2S		Well whose pressures are controlled
	Tube well with a content in H2S ˂ 5%, non-perforated
Moderate risk	Gas well ≥ 28,000 m3/day	Problematic geological formations (example: karsts)	Problems documented and not controlled (example: communication between adjacent wells)
	Oil well without flow and with a content in  H2S ≥ 5%
	Oil well with flow
	Injection well
High risk	Well containing gas with a content in H2S ≥ 5%	Not applicable	Not applicable
	Sour gas well

O.C. 1251-2018, Sch. 3.