The Atzbach-Schwanenstadt gas field—a potential site for onshore CO2 storage and EGR

Polak, Szczepan; Zweigel, Janine; Lindeberg, Erik; Pannetier-Lescoffit, S.; Schulz, Hans-Martin; Faber, E.; Teschner, Manfred; Poggenburg, J.; May, Franz; Krooß, Bernhard M.; Alles, Sascha; Kunaver, Daniel; Mawa-Isaac, E.; Zweigel, Peter

doi:10.1190/1.2360619

Cited by 7 publications

(10 citation statements)

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“…Moreover, autochthonous fine-grained material from pelagic background sedimentation is included in the fine-grained endmembers of turbidites. These sediments act as potential source rock for bacterial methane as well as the more than 500 m thick overburden (lithostratigraphically A1-A3, Malzer et al, 1993) which is also the seal for the gas field (Polak et al, 2006).…”

Section: Geological Frameworkmentioning

confidence: 99%

“…Up to now, several aspects regarding reservoir modelling, baseline monitoring etc. have been analysed (Polak et al, 2006).…”

Section: Geological Frameworkmentioning

confidence: 99%

“…160 bar). However, impermeable faults cause obvious field compartmentalization (Polak et al, 2006). As a consequence, the architecture of the reservoir and exploitation by pressure depletion indicate a closed system for the accumulation of bacterial gas.…”

Section: Geological Frameworkmentioning

confidence: 99%

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Bacterial methane in the Atzbach-Schwanenstadt gas field (Upper Austrian Molasse Basin), Part I: Geology

Schulz

Berk

Bechtel

et al. 2009

Marine and Petroleum Geology

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Section: Geological Frameworkmentioning

confidence: 99%

“…Up to now, several aspects regarding reservoir modelling, baseline monitoring etc. have been analysed (Polak et al, 2006).…”

Section: Geological Frameworkmentioning

confidence: 99%

See 1 more Smart Citation

Bacterial methane in the Atzbach-Schwanenstadt gas field (Upper Austrian Molasse Basin), Part I: Geology

Schulz

Berk

Bechtel

et al. 2009

Marine and Petroleum Geology

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“…Reservoir simulations carried out in these models allowed to evaluate the feasibility of an injection at 0.3 Mt CO 2 /year for thirty years, starting from 2010, with and without EGR, and considering also new wells. The other project target was to investigate the effect of CO 2 injection on the mechanical stability of the site, and the risk for CO 2 migration to the groundwater or the atmosphere and the possibility of detecting CO 2 in such cases [ Polak et al , 2006]. This was guaranteed by soil gas measurements to provide background data for comparison to future soil gas monitoring, a feasibility study to assess the possibilities for seismic monitoring though the years, geochemical experiments and simulations to evaluate the effect of CO 2 ‐rich brine on the reservoir seal, and finally, geomechanical experiments and simulations to assess the mechanical stability of the site [ Polak et al , 2006; Le Thiez et al , 2009].…”

Section: Application To the Atzbach‐schwanenstadt Injection Sitementioning

confidence: 99%

“…The reservoir sandstone intervals, approximately 1600 m below the surface, were formed in the Puchkirchen Basin, a deep water trough parallel to the Alpine front. The geological model (Figure 4b) has been built on the basis of seismic interpretation, geological knowledge, and well log data [ Polak et al , 2006], including the topographic surface and one low velocity layer to simulate the overburden.…”

Section: Application To the Atzbach‐schwanenstadt Injection Sitementioning

confidence: 99%

Seismic modeling to monitor CO₂ geological storage: The Atzbach‐Schwanenstadt gas field

et al. 2012

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[1] We develop a petro-elastical numerical methodology to compute realistic synthetic seismograms and analyze the sensitivity of the seismic response when injecting carbon dioxide (CO 2 ) in a depleted gas reservoir. The petro-elastical model describes the seismic properties of the reservoir rock saturated with CO 2 , methane and brine, and allows us to estimate the distribution and saturation of CO 2 during the injection process. The gas properties, as a function of the in-situ pressure and temperature conditions, are computed with the Peng-Robinson equation of state, taking into account the absorption of gas by brine. Wave attenuation and velocity dispersion are based on the mesoscopic loss mechanism, which is simulated by an upscaling procedure to obtain an equivalent viscoelastic medium corresponding to partial saturation at the mesoscopic scale. Having the equivalent complex and frequency-dependent bulk (dilatational) modulus, we include shear attenuation and perform numerical simulations of wave propagation at the macroscale by solving the viscoelastic differential equations using the memory-variable approach. The pseudo-spectral modeling method allows general material variability and provides a complete and accurate characterization of the reservoir. The methodology is used to assess the sensitivity of the seismic method for monitoring the CO 2 geological storage at the Atzbach-Schwanestadt depleted gas-field in Austria. The objective of monitoring is the detection of the CO 2 plume in the reservoir and possible leakages of CO 2 . The leakages are located at different depths, where the CO 2 is present as gaseous, liquid and supercritical phases. Even though the differences can be very subtle, this work shows that seismic monitoring of CO 2 from the surface is possible. While the identification of shallow leakages is feasible, the detection of the plume and deep leakages, located in the caprock just above the injection formation, is more difficult, but possible by using repeatability metrics, such as the normalized RMS (NRMS) images. Considering real-data conditions, affected by random noise, a reference detection threshold for deep leakages and the CO 2 plume in the reservoir corresponds to a signal-to-noise ratio of about 10 dB.

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Workflow using sparse vintage data for building a first geological and reservoir model for CO₂geological storage in deep saline aquifer. A case study in the St. Lawrence Platform, Canada

et al. 2012

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Among all geological CO2 storage possibilities, deep saline aquifers are of great interest due to their worldwide repartition and their important storage volume. We present a workflow using available vintage data with poor 2D seismic coverage for building a first geological and reservoir model for CO2 geological storage in the deep saline aquifers of the St. Lawrence Platform in the Bécancour area (Québec, Canada). In order to optimize the sparse available geoinformation using a geostatistical method, we krige the tops of the geological formations recorded at 11 wells using surfaces modeled from seismic horizons picked on 99.4 line‐km of 2D seismic reflection data. Modeled geological horizons show a good compromise between the geometric structure expressed by the variograms and the interpreted variations evaluated from seismic horizons. Using available well logs, distribution of porosity and permeability are computed for generating multiple realizations of the petrophysical properties of the targeted aquifer by sequential Gaussian simulations. The scarcity of available petrophysical data in the targeted aquifer generates high variability between the different realizations. Due to this uncertainty, the population of the 3D geological model with petrophysical properties that are required for further geostatistical simulations of CO2 injection do not allow to achieve reliable results. The methodology presented in this paper shows the possibilities and limits of using vintage data, and provides evidence that geophysical data acquired in a 3D fashion are important to fully characterize a reservoir for CO2 geological storage. © 2012 Society of Chemical Industry and John Wiley & Sons, Ltd

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The Atzbach-Schwanenstadt gas field—a potential site for onshore CO2 storage and EGR

Cited by 7 publications

References 0 publications

Bacterial methane in the Atzbach-Schwanenstadt gas field (Upper Austrian Molasse Basin), Part I: Geology

Bacterial methane in the Atzbach-Schwanenstadt gas field (Upper Austrian Molasse Basin), Part I: Geology

Seismic modeling to monitor CO₂ geological storage: The Atzbach‐Schwanenstadt gas field

Workflow using sparse vintage data for building a first geological and reservoir model for CO₂geological storage in deep saline aquifer. A case study in the St. Lawrence Platform, Canada

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The Atzbach-Schwanenstadt gas field—a potential site for onshore CO2 storage and EGR

Cited by 7 publications

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Bacterial methane in the Atzbach-Schwanenstadt gas field (Upper Austrian Molasse Basin), Part I: Geology

Bacterial methane in the Atzbach-Schwanenstadt gas field (Upper Austrian Molasse Basin), Part I: Geology

Seismic modeling to monitor CO2 geological storage: The Atzbach‐Schwanenstadt gas field

Workflow using sparse vintage data for building a first geological and reservoir model for CO2geological storage in deep saline aquifer. A case study in the St. Lawrence Platform, Canada

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Product

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Seismic modeling to monitor CO₂ geological storage: The Atzbach‐Schwanenstadt gas field

Workflow using sparse vintage data for building a first geological and reservoir model for CO₂geological storage in deep saline aquifer. A case study in the St. Lawrence Platform, Canada