Frequently Asked Questions

The ideal reservoir will benefit from all three of GERI’s stimulation methods (heat, pressure and CO₂). The greater a reservoir’s capacity for retaining injected gases, the better the overall project economics and environmental benefits will be.

DCSG stimulations can be either cyclic or continuous (flooding), and the preferred choice depends on many factors.

Injecting hot produced water and flue gases provides significant reservoir benefits. It has a major advantage over steam generation due to the reduced cost for feed water, and high-temperature equipment and piping are not required.

Reservoirs with swelling clays (e.g. the Clearwater) are detrimentally affected by the injection of non-saline water and/or steam, but not by produced saline water. Therefore, injecting hot produced water is a viable mean of adding heat to a reservoir that is otherwise unable to be in contact with steam.

GERI’s reservoir and exploitation engineers are available to lead or assist customers as needed.

Using Sustainable Development Technology Canada (SDTC) methodology, GERI’s DCSG greenhouse gas emissions are compared to a conventional Once-Through Steam Generation (OTSG) which is the closest technology equivalent for the thermal recovery of in-situ oil.

A project is normally designed to keep as much N₂ and CO₂ downhole as possible. There are multiple ways to handle the N₂ and CO₂ that return to surface and the preferred solution depends on the existing infrastructure and jurisdiction. Some of the options which may be done in series or in parallel are: send to sales, reinjection into the same reservoir, disposal (into a different reservoir), venting, flaring, incineration, thermal oxidization and nitrogen
rejection.

On previous cyclic pilot projects, 50 to 70 % of the injected CO₂ remained downhole.

Yes. GERI has successfully conducted a multi-week project generating hot water (at 95°C) using high TDS produced water.

Depending on the application, a DCSG deployment may qualify for SR&ED and/or other funding support.

GERI currently rents and operates its equipment, but we are open to discussing alternative business models.

GERI’s 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.