CO2 Storage Hero
CO2 Storage Hero

CCS - carbon capture and storage

Advanced well construction solutions for CO2 storage

Geologic sequestration

  • Applications
    CO2 Sequestration
    CO2 Injection
Welltec works to provide Carbon Capture Storage (CCS) solutions via the application of advanced technology, helping prevent the release of CO2 emissions into the atmosphere from industrial or energy-related activities (e.g. steel and cement production, or power plant/natural gas processing facilities).

Long-term storage of CO2

By injecting captured carbon dioxide into deep subsurface rock formations – such as depleted oil and gas reservoirs, saline formations, or deep un-minable coal beds – long-term storage can be safely achieved. 

Compared with underground injection of CO2 used for Enhanced Oil Recovery (EOR) and Enhanced Gas Recovery (EGR) the Carbon Storage projects bring additional challenges to well construction in relation to materials and project scale.

Challenges and differences

While the planning considerations are similar, CCS presents a number of unique challenges when compared to conventional oil and gas injector wells. 

  • Well location - critical to ensure injection within a confined reservoir volume
  • Well integrity - to avoid CO2 leakage and contamination of ground water
  • Well construction material - must be long-term CO2 resistant
  • Integration with existing oil and gas or mining facilitated

WAB® for Well Construction and Integrity

Our ISO 14310 rated, steel expandable WAB® (Welltec Annular Barrier) is expanded between the base pipe and the casing or the borehole by applying pressure in the casing. It conforms to the actual well bore geometry. The WAB can be mounted and welded onto any base casing in a simple and cost-effective way. Both ends are therefore fixed and provide life of well protection to the expanded WAB sleeve.

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Prepare Oil and Gas wells for late life CCS

The design and construction of forthcoming oil and gas wells should accommodate for future potential conversion to CCS.

Integration of Welltec Annular Barrier (WAB®) technology enhances well integrity throughout production years and delivers a pro-active solution to prepare a well for future use as CO2 storage.     

Corrosive resistant product portfolio

Welltec current product portfolio has a high degree of CO2 resistance.

Our D&E teams are currently developing an even broader range of products specifically for CCS projects, where every component will be resistant to high concentrations of CO2. 

Welltec solutions

The WAB range delivers enhanced well integrity, high expansion zonal isolation of undesired inflow/outflow zones in new wells and side-tracking from existing ones.

When combined with a Welltec Flow Valve (WFV™), the solution provides access and flow control in an injection well. 

Welltec packers are tested in compliance with ISO 14310 V0: the highest level of gas tight testing criteria.