ABOUT REX-CO2

Objectives

REX-CO2 will increase the technical feasibility and economic competitiveness of high-potential depleted hydrocarbon fields earmarked for CO2 storage. The specific objectives are:

  • Develop a publicly available well re-use screening tool which helps stakeholders to make informed decisions on the CCS re-use potential of certain wells or fields
  • Demonstrate the application of the developed tool to perform dedicated re-use assessment, including technical, ecological and economic aspects with candidate wells/fields from multiple international sites
  • Perform laboratory testing on relevant re-use risk scenarios, provide recommendations for (smart) material selection in re-used wells; feed coupled thermo-hydraulic-mechanical-chemical (THMC) models and improve failure predictions
  • Provide guidance for the development of re-use permit applications
  • Gain an improved understanding on public acceptance and provide guidance on the socio-economic aspects of re-using oil and gas infrastructures

Outcomes

The results of REX-CO2 are expected to facilitate large-scale CCUS implementation by providing a tool to evaluate and rank the CO2 re-use potential of hydrocarbon fields. The developed technology is not limited to a particular sector of CO2 storage but will accelerate all types of CCS. Key results will include:

  • Synthesised findings from developing a public re-use well screening tool for re-using existing hydrocarbon fields
  • Key findings in laboratory experiments, including well cement state of stress, material self-healing potential and implications for integrity of re-used wells
  • Field scale numerical simulation results for different re-use field scenarios
  • Field case re-use studies for selected wells and depleted fields in all six partner countries
  • Assessment of public acceptance and recommendations for future projects involving well re-use for CO2 injection/storage
  • Development of technical and socioeconomic best practice recommendations for re-using existing wells for CO2 storage

Work Packages



Timeline

September 2019 - August 2022



ACT logo

The project REX-CO2 is funded through the ACT programme (Accelerating CCS Technologies, Horizon2020 Project No. 294766). Financial contributions made from ADEME (FR); Ministry of Economic Affairs and Climate Policy (NL); Gassnova and RCN (NO); UEFISCDI (RO); BEIS, NERC, and EPSRC (UK); and US-DOE (USA) are gratefully acknowledged. For more information on ACT, visit their website.


Consortium

COORDINATOR:

TNO logo



PARTNERS:

BP logo UKRI-BGS logo Chevron logo CO2 Club logo Equinor AS logo GeoEcoMar logo IFPEN logo Ikon Science logo LANL logo Neptune Energy logo ReStone AS logo SINTEF logo Vallourec logo Wintershall logo