Corrosion protection for CO2 storage facilities using nanofilament coatings 

Most of the needed infrastructure to implement and expand the possibilities of CCS is already existing but must be proven effective and operational dealing with CO2 as the primary substance. The re-use of existing infrastructure for CCS will not only have a monetary impact but also reduce CO2 emissions during the value-chain for CCS and help prevent delays and unplanned obstacles.

Most CO2 storage projects involve drilling new wells and installation of super duplex tubulars. For using using already existing infrastructure, on the other hand, it is vital to develop new technologies that can protect tubes, pipes, reservoir sediments, and pumps from corrosion to facilitate the use of existing wells for CO2 injection.


1.917.762 DKK

Funding from IFD: 1.442.410 DKK
Financing from project partners: 475.352 DKK

Project lead

Tobias Weidner


The project will test whether newly developed silica nanofilaments (SNF) can protect well pipes and reservoir sediments from corrosion by highly acidic liquid CO2 solutions and hereby potentially reduce corrosion inside of tubes and pipes but also the intricate hydromechanics within pumps, the inside of tanks and pipes.

The project will help de-risk and reduce uncertainties with respect to reuse of existing infrastructures for CO2 storage.

  1. Test of SNF coatings (stability, corrosion/degradation).
  2. Determine corrosion rates of materials when exposed to supercritical CO2 as well as brine/ CO2 solutions.
  3. Test the optimization of the coating design.
  4. Fine-tune coating procedures (sediment types, steels alloys, corroded steel).
  5. Develop in-house high-pressure reactors and test development at large-scale testing facility.