Alberta oil sands systems guide

Surface mining vs in situ recovery

Shallow deposits can be mined while deeper bitumen is generally recovered in place using wells and thermal or other methods.

MiningIn situ

Editorial review: August 11, 2026 · Colin T. Ashcombe

Process role

Mining removes overburden and ore, then separates bitumen at a surface extraction plant.

How the system fits together

In situ projects heat or otherwise mobilize bitumen underground and bring produced fluids to surface facilities.

Environmental and reclamation context

Mining creates larger direct land disturbance and tailings; thermal in situ avoids open pits but uses substantial energy and creates roads, well pads and pipelines.

What to keep in mind

Neither pathway is impact-free; the relevant trade-offs are different.

High-level industrial education only. Oil sands mines, thermal wells, extraction plants, upgraders and tailings facilities are hazardous regulated operations; this site does not provide operating setpoints, chemical recipes or equipment procedures.