Emitting Less

Our Direct Contact Steam Generation (DCSG) technology can reduce your steam-
generating carbon emissions by up to
Steaming the ‘Conventional’ Way

Steam is typically produced for in-situ oil sands operations using a conventional once-
through-steam-generator (OTSG). Feedwater flows through pipes isolated from the
combustion flame chamber and the heat of combustion is conducted to the feedwater
through the pipes to generate steam. In traditional steaming, the combustion exhaust
gases are vented to atmosphere.

In 2020, greenhouse gas (GHG) emissions from in-situ oil sands operations accounted
for over 6% of Canada’s total GHG emissions (source: Environment and Climate Change
Canada: Canadian Environmental Sustainability Indicators: Greenhouse gas emissions,
July 2022)

Steaming the GERI Way

In contrast, GERI’s Direct Contact Steam Generation technology (DCSG) combusts
pressurized air and fuel in direct contact with water, resulting in a single product stream
of steam (or hot water) mixed with combustion exhaust gases, which is injected downhole
rather than being vented to atmosphere.

Environmental Evaluation and Impact
Environmental Evaluation & Impact

As per SDTC requirements, GERI’s Direct Contact Steam Generation (DCSG) greenhouse
gas emissions were evaluated by a third-party evaluator against emissions from
conventional Once-Through Steam Generation (OTSG), the closest technology equivalent.

Along with significantly reduced greenhouse gas emissions, our technology also provides
additional meaningful environmental benefits.

GHG Emissions: Emits up to 67%*
fewer greenhouse gases
than conventional OTSG (sourcing with renewables can take this up to 90%).
Air Quality: Emits up to 50% fewer critical air contaminants (NOX, SOX, PM2.5, VOC, CO) than conventional OTSG.
Water: Uses less than half the fresh water than conventional OTSG.
Land Disturbance: Portable units fit within standard well leases and use existing infrastructure and well
minimizing disturbance.
Reservoir & electricity-source dependent. In pilots, up to 70% of CO2 remained underground following an injection and production cycle.