Geolex, Inc.

Geolex, Inc.

Acid Gas Injection and Carbon Capture and Storage

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Geolex has extensive practical experience in geologic sequestration projects including disposal of hydrogen sulfide (H2S – also known as acid gas) and carbon dioxide (CO2) from natural gas processing plants; as well as CO2 – only, or carbon capture storage (CCS), sequestration projects. 

 This experience includes all phases of disposal/geologic sequestration projects, including:

  • Regional geologic suitability investigations
  • Detailed reservoir and cap rock characterization
  • Injection well design (Class II/Class VI)
  • Complete well permitting in multiple states
  • Drilling program planning/management
  • Well drilling and completion oversight
  • Ongoing maintenance and support
  • Registering and obtaining certification for CO2 sequestration credits

We have designed and completed both wet and dry acid gas injection (AGI) wells in deep carbonate and sandstone reservoirs.  Each well has been permitted to take in excess of 5 million cubic feet per day (MMCFD) of acid gas,  and each class II well at thousands of barrels per day.  In addition, Geolex has permitted projects up to 15 MMCFD in multiple wells from a single source.  Our specialized designs are optimized for severely corrosive conditions associated with handling of acid gas in wastewater or formation fluids.  Furthermore, our specialized designs control and prevent hydrate formation and accumulation in transient pressure/temperature conditions.  In addition, as part of this permitting process, Geolex has successfully demonstrated the integrity of the reservoirs and cap rock to sequester gas volumes injected over the 30 to 40 year life of each well.  We evaluate the lateral and vertical extent of the injection gas plumes in order to facilitate the registration of CO2 sequestration credits as an added economic benefit to our clients.  This permitting and design experience uniquely positions Geolex to assist clients with either AGI or CCS  projects for greenhouse gas reduction and carbon credit certification.

Advantages

The Advantages of Disposing Acid Gas and CO2 by Injection into Depleted Reservoirs or Deep Saline Aquifers:

          • An effective, safe, and permanent solution
          • Environmentally friendly – reduces greenhouse gas emissions
          • Eliminates emissions violations
          • Increases throughput of natural gas plants
          • Relatively inexpensive in comparison to traditional handling practices (i.e., Sulfur Recovery Units)
          • Eliminates costs associated with Sulfur Recovery Units
          • Provides CO2 sequestration benefits – obtain enhanced value under anticipated cap and trade or carbon tax

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