Acid Gas Injection
- Overview
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.
- Safety Critical
AGI facilities are amongst the most safety-critical systems designed in the energy sector.
- Thermodynamic Modelling
- Safety Systems
- Materials Selection
- Dispersion Modelling
- EPZ Management
- Compression Strategies
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
- Projects & Clients
Representative Projects & Clients
A selection of our acid gas injection projects delivered in Canada, the USA, and internationally
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.
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.
Cutbank and Lator Gas Plants
Dual stainless-steel sequestration compressors with modular design and prefabricated buildings.
Dilley CO₂/H₂S Sequestration Facility (Texas)
Detailed engineering, procurement, and commissioning of a multi-compressor AGI facility with full field integration.
Rainbow Lake CO₂/H₂S Sequestratio
Detailed engineering for a 1,650 hp API 618 compressor, dehydration, and DeltaV controls integration.
Deep Panuke Offshore AGI (Nova Scotia)
Offshore design for a 4.5 MMSCFD CO₂/H₂S disposal system for Atlantic Canada gas production.
Kharg Island Project (Iran)
FEED for an 85 MMSCFD CO₂/H₂S sequestration facility with 45,000 hp compression and export pipeline.
Tupper West Gas Plant (British Columbia)
180 MMSCFD sour-gas facility featuring DexPro™ CO₂/H₂S dehydration and dual 300 hp acid gas compression trains.
Harmattan CO₂ Recovery and Truckout
Engineering of a 200 t/d CO₂ recovery facility, CO₂ storage, and truckout systems.
Countess CO₂ Injection Troubleshooting
Pump and sub-cooler upgrade to restore operability at Alberta’s pilot sequestration facility.
Joffre CO₂ Miscible Flood
CO₂ EOR expansion and multi-well tie-ins.
Ethanol Plant CO₂ Sequestration FEED
Design for on-site CO₂ capture, compression, and injection for 120,000 t/y permanent storage.
Belle Plaine, Saskatchewan
500,000 t/y CO₂ capture, dehydration, and distillation facility integrated with Whitecap’s CCUS network.
Cold Lake CCUS FEED (Chart Industries Cryogenic Technology)
FEED study for the capture of CO₂ from flue gases using cryogenic separation systems.
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.
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.
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.
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.
2020 CO₂ Sequestration Wellsites and Pipeline Additions
Clive CO₂ Facility 2025 Compressor Addition
2024 CO₂ Pipeline Program
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 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.
SACROC CO₂ Expansion (Texas)
FEED and process design for CO₂ capture and injection expansion at one of the world’s oldest operating EOR fields.
Gorgon CO₂ Dehydration (Australia)
Six DexPro™ units designed for dehydration of 276 MMSCFD of CO₂.
National CO₂ Infrastructure Projects Estimating
Strategic network-costing and development study for Canada-wide CO₂ transportation and storage infrastructure.- Engineering Tools
Tools Supporting AGI System Design
GLE uses advanced in-house and 3rd party software tools supporting AGI system design and operation:
Phase Behaviour Software
Acid gas and water equilibrium calculation software used for high-accuracy phase-behaviour analysis.
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.
- These tools support rigorous thermodynamic modelling, dehydration design, pipeline evaluation, and injection system optimization.
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.
- Fast Project Delivery
- Cost-Effective Solutions
Gas Liquids Engineering Ltd. is a multi-disciplinary engineering firm specializing in oil & gas, power generation, and industrial facility solutions. With a strong focus on safety, sustainability, and technical excellence, we deliver tailored engineering, procurement, and project management services across North America and globally. Trusted by industry leaders, GLE combines innovation and proven expertise to power complex projects from concept to completion.
Gas Liquids Engineering (GLE)