Steam combined with flue gases
- Heat rate of 10.5 GJ/hr
- Steam rate of 100 m³/d (CWE*) at 240°C and 80% steam quality
- Non-condensable flue gas injection of 60 e³m³/d
- Wellhead injection pressures up to 6.1 MPa
This single stream of steam (or hot water) and flue gases is injected downhole, simultaneously heating and re-pressurizing the oil reservoir.
GERI's DCSG Co-Injector Process Flow
GERI’s portable DCSG co-injector is supported by GERI-owned process modules (air and fuel compressors, electrical generators, tanks). These modules are supplied by GERI, but alternatively, air and fuel compression and electrical requirements can be provided by the customer.
GERI's DCSG Site Elements
GERI’s co-injector can generate two distinct products delivered either continuously or intermittently (including in non-thermally cased and cemented wells by using GERI’s Annular Cooling Loop technology):
* Cold Water Equivalent
GERI's patent-pending Annular Cooling Loop provides the ability to steam non-thermally cased and cemented wellbores.
Implementations around the Lloydminster area have shown a maximum annular temperature of 60°C during steaming operations. The system operates as a closed loop with the ability to add additional makeup water if required.
Field-proven results of a Steam Oil Ratio (SOR) as low as 0.6, and up to a 300% increase in oil production.
Emits up to 67% less greenhouse gases than conventional Once-Through Steam Generation (OTSG) by injecting exhaust gases downhole rather than venting to atmosphere.**
Uses less than half the fresh water when generating steam, compared to conventional OTSG.**
Completely eliminates freshwater usage when utilizing produced water for hot water (with flue gases) generation.
Limits ground disturbance and energy / resource intensive drilling and construction by using existing wellbores and well sites.
**Per barrel of oil produced. Reservoir & electricity-source dependent. In Cyclic Steam & Flue Gas pilots, approximately 70% of CO2 remained underground following an injection and production cycle.