Sour gas is natural gas that contains measurable amounts of hydrogen sulphide (H2S). It is a colourless, flammable gas that smells like rotten eggs and is poisonous to humans and animals.
The business of sour gas is affected by two important factors: the economic value of the gas, and the methods used in its production.
Field Surveillance and Operations Branch Provincial Summary
Alberta's Energy Reserves and Supply/Demand Outlook
EnerFAQs Sour Wells
This fact sheet explains what a critical sour well is, the special safeguards such a well requires, and how these safeguards protect Albertans from sour gas blowouts.