Our Technology

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
and
re-pressurizing the oil reservoir.

Flow chart

GERI’s technology can steam non-thermally cased and cemented wells by
protecting
the annulus with patent-pending Annular Cooling Loop technology.

water-pipe
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
flue gases
  • 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
droplet
BENEFITS:
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
    infrastructure.
  • 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
    particulates.
**
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.