Peter G. Bergmann

Universitätsklinikum St. Pölten

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Cornelia Schmidt‐Hattenberger

Helmholtz Centre Potsdam - GFZ German Research Centre for Geosciences

Christopher Juhlin

Uppsala University

T. Labitzke

Helmholtz Centre Potsdam - GFZ German Research Centre for Geosciences

Stefan Lüth

Helmholtz Centre Potsdam - GFZ German Research Centre for Geosciences

Monika Ivandic

Uppsala University

Florian Wagner

RWTH Aachen University

Alexandra Ivanova

Siberian Branch of the Russian Academy of Sciences

Carsten Rücker

Federal Office for the Safety of Nuclear Waste Management

A. Kashubin

Imperial College London

Ben Norden

Helmholtz Centre Potsdam - GFZ German Research Centre for Geosciences

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Helmholtz Centre Potsdam - GFZ German Research Centre for Geosciences

Uppsala University

University of Potsdam

Centre de Géosciences

Geriatrische Gesundheitszentren

SINTEF

SINTEF Industry

Leipzig University

Freie Universität Berlin

Geological Survey of Sweden

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Five Years of CO2 Injection Monitoring at Ketzin, Germany, Using Electrical Resistivity Tomography

79th EAGE Conference and Exhibition 2017 (2016)

Peter G. Bergmann Cornelia Schmidt‐Hattenberger T. Labitzke Florian Wagner A Just

Summary Between the years 2008 and 2013, approximately 67 kilotons of CO2 have been injected at the Ketzin site, Germany. As part of the geophysical monitoring programme, time-lapse electrical resistivity tomography (ERT) has been applied using crosshole and surface-downhole ERT measurements. The ERT data collection is partly based on electrodes that are permanently installed in three wells at the site (one injection well and two observation wells). Both types of ERT measurements consistently show the buildup of a CO2-related resistivity signature near the injection point. On the basis of the imaged resistivity changes and a petrophysical model, CO2 saturation levels are estimated. These CO2 saturations are interpreted in conjunction with CO2 saturations inferred from neutron-gamma loggings. Apart from the CO2-brine substitution response in the observed resistivity changes, significant imprints from the dynamic behaviour of the CO2 in the reservoir are observed.

Electrical Resistivity Tomography

Petrophysics

Saturation (graph theory)

Igneous petrology

Gemology

Economic geology

10.3997/2214-4609.201601496

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Citations (1)

Integrated Monitoring of the CO2 Storage Ketzin Using a Structure-based Combination of Seismics and Geoelectrics

Proceedings (2012)

Peter G. Bergmann Monika Ivandic D. Kiessling Carsten Rücker Cornelia Schmidt‐Hattenberger

Geophysical monitoring at the CO2 pilot storage Ketzin comprises time-lapse seismic and geoelectric (ERT) measurements. Both types of measurements are known to image geological structures differently, in particular for a variable saturation of CO2. We present a combination of both methods by means of a structural constrained inversion approach. Structural constraints are implemented in the geoelectric inversion by a local regularization. This allows model parameters to behave discontinuously across prominent geological boundaries. A tetrahedral finite-element parametrization is used to closely follow geometric a priori structures interpreted from seismic reflection data. Thus, seismics and geoelectrics are arranged in a sequential workflow which is based on a structural similarity. Practical application is performed on the Ketzin datasets which comprise repeated 3D seismic surveys, as well as repeated surface-downhole geoelectric surveys, providing different illumination/coverage and time-lapse signals. However, application of a local regularization for the caprock-reservoir boundary yields a more consistent image and reduces some of the ill-posedness in the ERT inversion. We compare the result with that of an unconstrained inversion and discuss its potential for CO2 migration imaging.

Geophysical Imaging

10.3997/2214-4609.20148254

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Applications of Spinor Invariants in Atomic Physics . H. C. Brinkman. North Holland, Amsterdam; Interscience, New York, 1956. 72 pp. $3.25.

Science (1956)

Peter G. Bergmann

10.1126/science.123.3209.1181.a

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Geophysical monitoring at the Ketzin pilot site for CO 2 storage: New insights into the plume evolution

International journal of greenhouse gas control (2014)

Monika Ivandic Christopher Juhlin Stefan Lüth Peter G. Bergmann A. Kashubin

Overburden

Seismic survey

Anomaly (physics)

Baseline (sea)

10.1016/j.ijggc.2014.10.015

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Citations (61)

Motion and Relativity (Polish Academy of Sciences, Physical Monographs). Leopold Infeld and Jerzy Pebański. Pergamon, New York; Państwowe Wydawnictwo Naukowe, Warsaw, Poland, 1961. 229 pp. Illus. $7.50.

Science (1961)

Peter G. Bergmann

10.1126/science.133.3460.1250.b

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Gravity Shields

Science (1957)

Peter G. Bergmann

Shields

10.1126/science.125.3246.498.b

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A Permanent Downhole Electrode Array as Valuable Tool for CO2 Monitoring at the Ketzin Pilot Site

Proceedings (2015)

Cornelia Schmidt‐Hattenberger Peter G. Bergmann T. Labitzke Florian Wagner

Summary At the Ketzin pilot site (Germany), a multi-disciplinary monitoring concept was established in order to image CO2 injected into a saline aquifer. Within this surveillance program a behind-casing borehole electrode array was deployed as permanent reservoir monitoring (PRM) tool. During the period from 2008 until 2014, weekly geo-electrical cross-hole data were recorded. This comprehensive archive of time-lapse resistivity data forms a respectable base for CO2 saturation estimation. Moreover, the long-term evaluation of the borehole electrode array provided the evidence for its endurance under subsurface conditions, reliability and usefulness for integrative geophysical data analysis.

10.3997/2214-4609.201411959

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Citations (0)

The Meaning of Relativity . Albert Einstein. Princeton University Press, Princeton, ed. 5, 1955. 166 pp. + index. $3.75.

Science (1956)

Peter G. Bergmann

10.1126/science.124.3214.230.b

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Citations (0)

Relativity: The General Theory. J. L . Synge. North-Holland, Amsterdam; Interscience, New York, 1960. xvi + 506 pp. Illus. $ 16.50.

Science (1960)

Peter G. Bergmann