Heletz experimental site overview, characterization and data analysis for CO2 injection and geological storage

Auli Niemi, Jacob Bensabat, Vladimir Shtivelman, Katriona Edlmann, Philippe Gouze, Linda Luquot, Ferdinand Hingerl, Sally M. Benson, Philippe A. Pezard, Kristina Rasmusson, Tian Liang, Fritjof Fagerlund, Michael Gendler, Igor Goldberg, Alexandru Tatomir, Torsten Lange, Martin Sauter, Barry Freifeld

Research output: Contribution to journalArticlepeer-review

51 Scopus citations

Abstract

This paper provides an overview of the site characterization work at the Heletz site, in preparation to scientifically motivated CO2 injection experiments. The outcomes are geological and hydrogeological models with associated medium properties and baseline conditions. The work has consisted on first re-analyzing the existing data base from ∼40 wells from the previous oil exploration studies, based on which a 3-dimensional structural model was constructed along with first estimates of the properties. The CO2 injection site is located on the saline edges of the Heletz depleted oil field. Two new deep (>1600 m) wells were drilled within the injection site and from these wells a detailed characterization program was carried out, including coring, core analyses, fluid sampling, geophysical logging, seismic survey, in situ hydraulic testing and measurement of the baseline pressure and temperature. The results are presented and discussed in terms of characteristics of the reservoir and cap-rock, the mineralogy, water composition and other baseline conditions, porosity, permeability, capillary pressure and relative permeability. Special emphasis is given to petrophysical properties of the reservoir and the seal, such as comparing the estimates determined by different methods, looking at their geostatistical distributions as well as changes in them when exposed to CO2.

Original languageEnglish
Pages (from-to)3-23
Number of pages21
JournalInternational Journal of Greenhouse Gas Control
Volume48
DOIs
StatePublished - 2016
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2016 Elsevier Ltd

Funding

FundersFunder number
Seventh Framework Programme227286

    Keywords

    • CO injection
    • Deep geologic storage of CO
    • Site characterization
    • Site properties

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