Every year the companies that list their stocks on the Toronto Stock Exchange are required to submit a report on the corporate reserves of the company. In generating the reserve report the reserve engineering firm hired to do the corporate reserves(or the company itself for self auditing companies) have to look at each producing well owned as well as geological maps of the subsurface formation and consider.
- The technical recoverable oil or gas from each well.
- From the land records and relevant provincial or federal royalty regulations the ownership of that oil and gas considering working interest and royalties.
- Operating costs from the corporate financial records
- Geological maps, Geophysical interpretations that are relevant, and petrophysical to understand the oil and gas contained in the reservoir.
- For undrilled locations the cost of drilling, completing and bringing to market those undrilled locations
- Other corporate disclosed information.
For any of these companies SEDAR or the corporations themselves allow you to browse those reports and like financial reports glean what information you want from the about what the company owns in the subsurface.