CO2 Storage Hero
CO2 Storage Hero

CCS - carbon capture and storage

Advanced well construction solutions for CO2 storage

Geologic sequestration

  • Applications
    Improved well integrity
    Zonal isolation and control
Welltec provides solutions to the increasing demand for Carbon Capture Storage (CCS) globally. With the application of advanced technology, we provide safer wells designed for long-term injection and storage of 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 of CO2

Through the application of our technology, we’re helping prevent the release of CO2 into the atmosphere by enabling long-term storage solutions for emissions created from industrial or energy-related activities (e.g. steel and cement production, or power plant/natural gas processing facilities).

Compared with underground injection of CO2 used for Enhanced Oil Recovery (EOR) and Enhanced Gas Recovery (EGR),carbon storage projects present additional challenges to well construction in relation to materials and project duration.

Carbon storage - well requirements

Integration of Welltec Annular Barrier (WAB®) technology addresses requirements for:

  • High well integrity – by securing the well against annulus CO2 leakage and contamination of ground water
  • Well construction material – by CO2 resistant products
  • Integration with existing oil and gas or mining facilities – via cost efficient well solutions

WAB® for Well Construction and Integrity

Our ISO 14310 rated, steel WAB 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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Preparing oil and gas wells for late life CCS

When designing conventional oil and gas wells, future conversion to CCS should be considered.

Integration of WAB technology enhances well integrity throughout production years and delivers a pro-active solution to prepare a well for future use in CO2 storage.  


Corrosive resistant product portfolio

The Welltec product portfolio has a high degree of CO2 resistance and our D&E teams are working to develop 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.