MTARRI, Inc.

EORGAS | Mixed Gas Technology

Frequently Asked Questions

Questions Welcomed

Benefits of the EOR Mixed Gas Technology

  • EORGAS, is a mixture of gases used for enhancing EOR Economics.
  • EORGAS, when operating under low pressure and immiscible conditions, can recover oil faster than a pure high pressure, miscible CO2.
  • The EORGAS mixture lowers IFT (Interfacial Tension), requires only 4-6 mcf/BO recovery, increases matrix permeability (if swelling clays are present), mobilizes asphaltenes, aids conformance, and is produced on site.
  • Existing oilfield tubulars are protected by the presence of CO and another additive to minimize corrosion.  Carbon monoxide is a strong reducing agent  that reacts with any corroded/oxidized tubular Fe+3 iron to reduce the oxide to a low-reactive FeO form.  This FeO is also known as the mineral “wustite”.

EORGAS is a multi-patented technology. Additional patents are pending in the US & CA.

The technology combines the physical chemical mechanisms of CO2 with the geochemical mechanisms of CO to:

  • Mobilize asphaltenes
  • Shrink swelling clays
  • Operate at immiscible pressures
  • Access tighter, bypassed zones.

EORGAS has demonstrated the capability, under low pressure (below CO2 miscibility conditions) of:

  • Increasing project IRR due to a 2x faster rate of oil production vs pure CO2
  • Achieving heavy oil recovery at reservoir temperatures and pressure with NO CO2/CO emissions due to sequestration of CO2/CO
  • Irreversibly remediates existing formation-damaged reservoirs (e.g., SAGD?) to economically recover additional oil (please see SPE paper 200458-MS) by shrinking swelling clays
  • Requiring ~3-4 mcf/BO of heavy oil recovered (depending on asphaltene content of heavy oil) and 6 mcf/BO of conventional oil deposits vs CO2‘s 10-12 mcf/BO recovered
  • Slightly decreases viscosity and increases API gravity of heavy oil
  • Helps minimize CO2-induced corrosion on oilfield tubulars
  • Lowers interfacial Tension to facilitate WAG (water-alternating-gas) operations
  • CO, alone, has shown its capability to recover both light oil and heavy oil due to its attraction to the aromatic and asphaltene components of the crude oil
  • Depending on reservoir conditions, alters oil wet to water wet reservoir conditions
  • CO’s small diameter accesses bypassed (or formation damaged) reservoir areas to recover more oil
  • EORGAS is produced on-site
  • Operates under Huff-n-Puff, Line Drive/WAG processes, or gravity drainage
  • Excess heat produced during EORGAS formation available for additional utilization e.g., on site electrical generation, steam production
  • H2 gas can be produced as economic byproduct
  1. In Oklahoma, a wellbore remediation project, having ~4% montmorillonite in a clayey standstone, was treated with EORGAS by a Huff-n-Puff process. Prior to treatment the 34° API, averaged 0.4 bopd. Post treatment, the well increased to 1.1 bopd (a 2.75x), which has been maintained for the past 3 years. During the flowback (Puff period) when EORGAS was present, the well averaged >4+ bopd for ~5 days.
  2. In US, a full-scale field project, on a conventional reservoir is in progress by an existing EORGAS licensee.
  3. Negotiations are currently in progress for a heavy oil application (US) with another potential licensee and other Canadian heavy oil producers.

Five years of laboratory work, a field well bore remediation, a full-scale conventional EOR process and 400+ syngas plants (worldwide) daily producing CO2, CO, H2, has demonstrated industries’ safe operating history of CO2 and CO production and utilization

  • Most refineries often located near large cities have syngas plants to produce H2 and CO.
  • Dilution of the CO with CO2 further ensures a higher level of operating safety.
  • Field operations are continuously monitored by both simple home-type CO monitors and personal monitors to provide safe, on site operations for both the workers and the general area.
Environmental Aspects
  • Use of the mixed gas (EORGAS) does not result in the emissions of any greenhouse gases such as CO2, CO or methane.
  • Since the EORGAS can be produced on site, while also producing steam for production of electrical energy, a “green” energy supply is available.
  • The mixed gases of CO2 and CO are sequestered within the reservoir.

MTARRI, Inc.

Paul Trost, Ph.D., Geochemist
1511 Washington Avenue
Golden, CO 80401

(303) 324-9296
Directions
Email

John Wright, Ph.D., Petroleum Eng.
1511 Washington Avenue
Golden, CO 80401

(720) 273-7039
Directions
Email
©2024 MTARRI | EORGAS
EWD

MTARRI, Inc.

Paul Trost, Ph.D., Geochemist
1511 Washington Ave.
Golden, CO 80401

(303) 324-9296

We would appreciate the opportunity to personally present this technology to your appropriate staff. Please feel free to initiate any communications below.

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MTARRI, Inc.

John Wright, Ph.D., Petroleum Eng.
1511 Washington Ave.
Golden, CO 80401

(720) 273-7039

We would appreciate the opportunity to personally present this technology to your appropriate staff. Please feel free to initiate any communications below.

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MTARRI, Inc.

Paul Trost, Ph.D., Geochemist
John Wright, Ph.D., Petroleum Eng.
1511 Washington Ave.
Golden, CO 80401

(303) 324-9296

We would appreciate the opportunity to personally present this technology to your appropriate staff. Please feel free to initiate any communications below.

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Your message was sent successfully.

We will see it soon and respond accordingly.