FME SUCCESS Environmental best practice for offshore geological storage projects

Transcription

1 FME SUCCESS Environmental best practice for offshore geological storage projects Guttorm Alendal (University of Bergen) May 28, 2015, Japan Science Week CCS session

2 SUCCESS partners -as of Industrial partners: CGG ConocoPhillips Dea Norge AS Lundin Norway AS Statoil Petroleum ASA Institute for Energy Technology (IFE) Norwegian Geotechnical Institute (NGI) Norwegian Institute for Water Research (NIVA) UniResearch (Uni) University of Bergen (UiB) University of Oslo (UiO) University Centre of Svalbard (UNIS) The FME SUCCESS Centre on CO Research partners: 2 storage addresses understanding the behaviour of CO 2 reservoirs, flow and seal fme-success.no 2

3 Centre Portfolio 2015 as of May fme-success.no 3

4 Large-scale storage of CO 2 on the Norwegian shelf. The (Norwegian) North Sea is recognized as a key to establishing an effective CCS value chain and transformation to low-carbon economy in Europe says many international reports. The Norwegian research community on CO 2 storage, has the last years joined forces to link the current research efforts on CO 2 storage with the identified challenges, to enable large-scale storage of CO 2 on the Norwegian shelf. Inspired by this vision, a report was prepared which stated that there are no technical showstoppers for storing CO 2 in large quantities on Norwegian Shelf. The Norwegian debate on carbon capture and storage must be based on Norway s capacity to store CO 2 on a scale that can make a difference in global terms, as well as the commercial opportunities from the large-scale storage of CO 2 on the Norwegian continental shelf.

5 Centre organization fme-success.no 5

6 THE MARINE ENVIRONMENT; CARBON CAPTURE AND STORAGE OACE, CarboOcean, and CTI large scale experiment. (90s-00s). CO2Marine I & II. (2007 & 2009). CO2base ( ). SECURE ( ). SUCCESS ( ) ECO2 ( ). STEMM-CCS ( )?? Department of Mathematics

7 ECO 2 project and consortium The ECO 2 consortium consists of 24 research institutes, one independent foundation (DNV GL), and 2 commercial entities (Statoil AS, Grupa Lotos) From nine European countries (Germany, Norway, U.K., Italy, The Netherlands, Poland, Belgium, Sweden, France) The project is coordinated at GEOMAR, Germany by Klaus Wallmann The EC allocated 10.5 million to the ECO 2 consortium [total costs about 18 million] Project start 1 st May 2011, project end 30 th April 2015

8 Objectives To investigate the likelihood of leakage from sub-seabed storage sites To study the potential effects of leakage on benthic organisms and the marine ecosystems To assess the risks of sub-seabed carbon storage To develop a comprehensive monitoring strategy To define guidelines for best environmental practices in implementation and management of sub-seabed storage

9 Project structure Page 9

10 Study Areas Storage sites Natural CO 2 seeps

11 Sleipner: Seismic profile showing structures related to fluid and gas flow Karstens et al.

12 Abundance of seismic chimneys and pipes in the overburden Map of Sleipner area CO 2 plume Dots: Seismic Chimneys Karstens et al.

13 Seepage features at storage sites Sleipner Seismic pipes and chimneys, formation water and dissolved methane release through fracture-like structure, methane gas release through abandoned wells Snøhvit Seismic pipes and chimneys, pockmarks, BSR (=> gas hydrate), no gas and formation water release B3 Seismic pipes and chimneys No detectable CO 2 leakage at storage sites! Karstens et al.

14 Environmental impacts of CO 2 leakage Field work at natural CO 2 seep (Panarea) Bottom waters are acidified by CO 2 dissolution and dissociation Many species are affected by low ph values (acidic water) Loss in diversity of benthic ecosystems at all levels -from microbes to macro-fauna- has been observed at natural CO 2 seep sites

15 Environmental impacts of CO 2 leakage

16 Footprint of CO 2 leak at the seabed Karstens et al.

17 P(detect leak) Event based monitoring p t = 0.01 p t = 0.05 p t = 0.1 p t = Sensors

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20 overburden, seabed, and water column should be surveyed with i. 3-D seismic, ii. high-resolution bathymetry/backscatter mapping of the seabed, iii. acoustic imaging of shallow gas accumulations in the seabed and gas bubbles ascending through the water column, iv. video/photo imaging of biota at the seabed, v. chemical detection of dissolved CO2 and related parameters in ambient bottom waters. Additional targeted studies have to be conducted if active formation water seeps, gas seeps, and pockmarks with deep roots reaching into the storage formation occur at the seabed. Page 20

21 Environmental risks for large-scale application of sub-seabed CO 2 storage Post ECO 2 Prior ECO 2

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