Acid Gas Injection

World-leading engineering, procurement, and construction management for acid gas, sour gas, CO₂, and waste gas injection systems.
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Acid Gas Injection Experience

Gas Liquids Engineering (GLE) is a recognized global leader in the engineering of acid-gas injection (AGI) systems — encompassing CO₂, H₂S, and mixed-acid-gas compression, dehydration, and sequestration facilities. Since our first AGI project in 1995, GLE has designed more than 40 CO₂/H₂S sequestration systems worldwide and has supported dozens more, with streams ranging in composition from 99% H₂S to 99% CO₂. Over nearly four decades, GLE has developed industry-leading expertise in acid-gas phase behaviour, hydrate and corrosion management, compression technology, control systems, and safe, flexible AGI system design.

AGI facilities are amongst the most safety-critical systems designed in the energy sector.

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DexPro™ Acid-Gas Dehydration

GLE is the original developer of the patented DexPro acid gas dehydration Process. DexPro is a commercially proven moisture-management solution for CO₂ and H₂S service that operates at compressor inter-stage pressures without desiccants or chemical handling, minimizing footprint and operating cost.

AGI facilities are among the most safety-critical and technically complex systems in the energy sector. Acid gases can form corrosive acids, as refrigerants, solidify under transient conditions, and embrittle conventional materials — requiring advanced thermodynamic modelling, rigorous materials selection, and carefully engineered compression and control strategies. GLE’s engineers specialize in acid-gas behaviour, rotating-equipment design, process safety, and CO₂/H₂S dispersion modelling.

GLE has designed, permitted, and commissioned AGI facilities in both remote and semi-populated regions, managing regulatory processes and developing detailed safety cases across jurisdictions. We work closely with reservoir and well-completion specialists to ensure seamless surface-to-subsurface integration and support stakeholder engagement throughout project development.

Ovintiv Acid Gas Pipelines

Representative Projects & Clients

A selection of our acid gas injection projects delivered in Canada, the USA, and internationally

AltaGas

Harmattan Acid Gas Injection Facility

Design and engineering of a dedicated acid-gas injection system diverting H₂S-rich acid gas from sulphur recovery and incineration to compression, dehydration, and disposal via injection well, supporting long-term sour-gas processing operations.

Ovintiv

Pipestone Acid-Gas Injection Facility

Complete AGI compression, pipeline, and injection system handling approximately 99% H₂S, incorporating a specialized multi-pipeline configuration to manage emergency planning zone (EPZ) requirements.

Kaybob Amalgamated AGI

Cutbank and Lator Gas Plants

Dual stainless-steel sequestration compressors with modular design and prefabricated buildings.

Williams Energy

Dilley CO₂/H₂S Sequestration Facility (Texas)

Detailed engineering, procurement, and commissioning of a multi-compressor AGI facility with full field integration.

Husky Energy

Rainbow Lake CO₂/H₂S Sequestratio

Detailed engineering for a 1,650 hp API 618 compressor, dehydration, and DeltaV controls integration.

Encana

Deep Panuke Offshore AGI (Nova Scotia)

Offshore design for a 4.5 MMSCFD CO₂/H₂S disposal system for Atlantic Canada gas production.

IOOC / NIOC

Kharg Island Project (Iran)

FEED for an 85 MMSCFD CO₂/H₂S sequestration facility with 45,000 hp compression and export pipeline.

Murphy Oil

Tupper West Gas Plant (British Columbia)

180 MMSCFD sour-gas facility featuring DexPro™ CO₂/H₂S dehydration and dual 300 hp acid gas compression trains.

AltaGas

Harmattan CO₂ Recovery and Truckout

Engineering of a 200 t/d CO₂ recovery facility, CO₂ storage, and truckout systems.

CMC Research Institute

Countess CO₂ Injection Troubleshooting

Pump and sub-cooler upgrade to restore operability at Alberta’s pilot sequestration facility.

Numac Energy

Joffre CO₂ Miscible Flood

CO₂ EOR expansion and multi-well tie-ins.

Central Canada

Ethanol Plant CO₂ Sequestration FEED

Design for on-site CO₂ capture, compression, and injection for 120,000 t/y permanent storage.

Federated Co-op

Belle Plaine, Saskatchewan

500,000 t/y CO₂ capture, dehydration, and distillation facility integrated with Whitecap’s CCUS network.

Strathcona Resources

Cold Lake CCUS FEED (Chart Industries Cryogenic Technology)

FEED study for the capture of CO₂ from flue gases using cryogenic separation systems.

Strathcona Resources

Multi-Year Carbon-Capture Technology Evaluation

Comprehensive publicly funded study evaluating multiple technologies for exhaust-gas carbon capture at three SAGD facilities near Cold Lake.

Wolf Midstream

Alberta Carbon Trunk Line (ACTL) Facilities

Design-basis and facilities engineering for multi-stage CO₂ compression, dehydration, and dense-phase transport from industrial emitters to the Clive sequestration hub.

Enhance Energy

Clive CO₂ EOR and Sequestration Facilities (ACTL Termination)

Detailed engineering, compression, dehydration, and metering for the ACTL termination and injection system supporting EOR and permanent CO₂ sequestration.

Enhance Energy

Clive CO₂ EOR and Sequestration Facilities (ACTL Termination)

Detailed engineering, compression, dehydration, and metering for the ACTL termination and injection system supporting EOR and permanent CO₂ sequestration.

Enhance Energy

2020 CO₂ Sequestration Wellsites and Pipeline Additions

Enhance Energy

Clive CO₂ Facility 2025 Compressor Addition

Enhance Energy

2024 CO₂ Pipeline Program

Whitecap Resources

Saskatchewan CO₂ Sequestration System

Engineering for a 200 km dense-phase CO₂ pipeline, compression, and injection network expanding one of the largest anthropogenic CO₂ storage hubs worldwide.

Marquis Energy

Marquis Industrial Complex (Illinois, USA)

2.25 Mt/y bio-CO₂ capture and sequestration project at the world’s largest dry-grind ethanol facility, featuring 10,000 hp compression and DexPro™ dehydration.

Kinder Morgan

SACROC CO₂ Expansion (Texas)

FEED and process design for CO₂ capture and injection expansion at one of the world’s oldest operating EOR fields.

Chevron

Gorgon CO₂ Dehydration (Australia)

Six DexPro™ units designed for dehydration of 276 MMSCFD of CO₂.

Canada Infrastructure Bank

National CO₂ Infrastructure Projects Estimating

Strategic network-costing and development study for Canada-wide CO₂ transportation and storage infrastructure.

Tools Supporting AGI System Design

GLE uses advanced in-house and 3rd party software tools supporting AGI system design and operation:

AQUAlibrium

Phase Behaviour Software

Acid gas and water equilibrium calculation software used for high-accuracy phase-behaviour analysis.

GLEWPro

Injection Pressure Software

Injection pressure estimation software specifically developed for acid-gas applications.

3rd Party dispersion modelling, the most accurate software available for modeling of CO2 releases.

A complete listing of GLE’s acid-gas injection and CO₂ sequestration experience is available on request.

"Decades of Expertise Driving Innovative Engineering Solutions"

Building Smarter Energy Infrastructure

To engineer reliable, forward-thinking energy solutions with safety, sustainability, and client value at the core of everything we do.