GERI’s Direct Contact Steam Generation (DCSG) co-injector unit combusts
pressurized air and natural gas in direct contact with water, resulting in a
single product stream of steam or hot water, combined with flue gases.
Steam and flue gases are then injected downhole, simultaneously heating
re-pressurizing the oil reservoir.
GERI’s technology can steam non-thermally cased and cemented wells by
the annulus with patent-pending Annular Cooling Loop technology.
GERI’s DCSG CO-INJECTOR CAPABILITIES:
GERI’s co-injector unit can generate two distinct products delivered
either continuously or intermittently:
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
Hot produced water, with or without
- Heat rate of 5.2 GJ/Hr
- Hot produced water rate of 430 m3/d at 85°C
- Optional non-condensable flue
gas injection rate between 0 and 28 e3m3/d
- Wellhead injection pressures up
to 6.1 MPa
*Cold Water Equivalent
Increased Oil Recovery
- Field-proven results of a Steam
Oil Ratio (SOR) as low as 0.6,
and 300% more heavy oil production from the baseline
Lower Emissions and Environmental Impact
- 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 gas) generation.
- Limits ground disturbance and energy/resource intensive drilling
and construction by using existing wellbores and wellsites.
Reduced Costs and Quick Deployment
- Uses portable modules as opposed to costly permanent
- Minimizes lengthy environmental and land-use applications by
using existing well leases.
- Significantly reduces water procurement costs when generating
hot water using produced water.
- Reduces feed-water treatment costs (when generating steam)
due to a higher tolerance for total dissolved solids (TDS) and
Reservoir electricity-source dependent. In pilots, approximately 70% of CO2 remained underground
following an injection and production cycle.
Reservoir electricity-source dependent. In pilots, approximately 70% of CO2 remained underground following an injection and production cycle.