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Home > Alberta's Resource Inventory > Hydrocarbons > Crude Oil > Resource Development > Drilling > Well Control > Critical Sour Gas Wells

Resource Inventory

Critical Sour Gas Wells

Gas Well at Hubert LakeSome wells are designated as critical sour gas wells because they have the potential for releases of hydrogen sulphide that might affect nearby residents. Most such wells are located in the western half of Alberta and in northeastern British Columbia. Companies and governments require emergency response planning, public consultation, safety equipment and worker training for critical sour gas operations.

When the drill bit enters the critical zone in a well where sour gas will likely be encountered, additional precautions may include providing breathing apparatuses for rig personnel and notifying people living nearby.

Petroleum Communication Foundation. Our Petroleum Challenge: Exploring Canada's Oil and Gas Industry, Sixth Edition. Calgary: Petroleum Communication Foundation, 1999. With permission from the Centre for Energy.

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