Petrophysical Properties and Capacity of Prospective Structures for Geological Storage of CO2 Onshore and Offshore Baltic

Shogenov, Kazbulat; Shogenova, Alla; Vizika-Kavvadias, Olga

doi:10.1016/j.egypro.2013.06.417

Cited by 10 publications

(59 citation statements)

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“…Velocities were measured in two directions (X and Y) to consider anisotropy. Shogenov et al (2013) reported petrophysical properties of new samples from reservoirs of the E6 and E7 structures, which were determined and compared to old data. More detailed description of petrophysical methods is presented here.…”

Section: Methodsmentioning

confidence: 99%

“…CO 2 storage efficiency factor is the volume of CO 2 that could be stored in reservoir per unit volume of original fluids in place. In our previous study we used a different S ef for each structure based on its reservoir properties and employed different methods to estimate these factors (Shogenov et al, 2013). Following Bachu et al, (2007), the efficiency factors 10 % and 20 % in the E6 and E7 offshore structures were estimated respectively.…”

Section: Methodsmentioning

confidence: 99%

“…On the basis of measured and estimated porosity and gas permeability, CO 2 storage capacity of the structures was estimated (Tables 1, 2 (Shogenov et al, 2013), gravimetric and titration analyses were made in the IGTUT (Shogenova et al, 2009b). The theoretical storage capacity of the structures was estimated using a well-known formula for estimation of the capacity of a structural trap (Bachu et al, 2007):…”

Section: Methodsmentioning

confidence: 99%

“…Previous studies reported extremely high CO 2 emissions per capita in Estonia and need of carbon capture and storage technology (CCS) implementation to reduce the greenhouse gas effect and the Earth's climate change (Sliaupa et al, 2008;Shogenova et al, 2009aShogenova et al, , b, 2011aShogenov et al, 2013). According to these studies Estonia has unfavourable for CO 2 geological storage (CGS) conditions (shallow sedimentary basin and potable water available in all known aquifers) and storage capacity of Lithuanian geological structures was estimated as insufficient, due to small size of the structures (Fig.…”

Section: Introductionmentioning

confidence: 99%

“…In this study we focused on more detailed investigation of two offshore structures E6 and E7 (Fig. 2), which were briefly described in Shogenov et al, (2013). We expanded description of methods, measured petrophysical, geochemical and mineralogical properties of reservoir rocks, improved and clarified estimation of CO 2 storage capacity in the E6 structure.…”

Section: Introductionmentioning

confidence: 99%

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Potential structures for CO<sub>2</sub> geological storage in the Baltic Sea: Case study offshore Latvia

Shogenov¹,

Shogenova²,

Vizika-Kavvadias³

2013

Bull Geol Soc Finland

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This study is focused on two structures in the Baltic offshore region (E6 and E7 structures in Latvia) prospective for the geological storage of carbon dioxide (CO 2 ). Their CO 2 storage capacities were estimated recently with different levels of reliability. Petrophysical, geophysical, mineralogical and geochemical parameters of reservoir rocks represented by quartz sandstones of the Deimena Formation of Middle Cambrian in two wells and properties of Silurian and Ordovician cap rocks were additionally studied and interpreted in the present contribution. Extended methodology on rock measurements and estimation of conservative and optimistic storage capacity are presented. Uncertainties and risks of CO 2 storage in the offshore structure E6 estimated as the most prospective for CO 2 geological storage in the Baltic Region, and the largest among all onshore and offshore structures studied in Latvia, were discussed. We re-estimated the previous optimistic capacity of the E6 structure (265-630 Mt) to 251-602 Mt. Considering fault system within the E6 structure we estimated capacity of two compartments of the reservoir separately (E6-A and E6-B). Estimated by the optimistic approach CO 2 storage capacity of the E6-A part was 243-582 Mt (mean 365 Mt) and E6-B part 8-20 Mt (mean 12 Mt). Conservative capacity was 97-233 Mt (mean 146 Mt) in the E6-A, and 4-10 Mt (mean 6 Mt) in the E6-B. The conservative average capacity of the E6-B part was in the same range as this capacity in the E7 structure (6 and 7 Mt respectively). The total capacity of the two structures E6 and E7, estimated using the optimistic approach was on average 411 Mt, and using the conservative approach, 159 Mt.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Potential structures for CO<sub>2</sub> geological storage in the Baltic Sea: Case study offshore Latvia

Shogenov¹,

Shogenova²,

Vizika-Kavvadias³

2013

Bull Geol Soc Finland

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Experimental modeling of CO₂‐fluid‐rock interaction: The evolution of the composition and properties of host rocks in the Baltic Region

Shogenov

Shogenova

Vizika-Kavvadias

et al. 2015

Earth and Space Science

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The objective of this study was to determine the influence of the possible CO 2 geological storage in the Baltic Region on the composition and properties of host rocks to support more reliable petrophysical and geophysical models of CO 2 plume. The geochemical, mineralogical, and petrophysical evolution of reservoir sandstones of Cambrian Series 3 Deimena Formation and transitional clayey carbonate caprocks of Lower Ordovician Zebre Formation from two offshore structures in Latvia and Lithuania and two onshore structures in Latvia, induced by laboratory-simulated CO 2 geological storage, was studied for the first time in the Baltic Region. The geochemical, mineralogical, and petrophysical parameters were measured in 15 rock samples, before and after the alteration experiment. The diagenetic alterations of reservoir rocks were represented by carbonate cementation in the top of the onshore South Kandava structure, and quartz cementation and compaction, reducing the reservoir quality, in the deepest offshore E7 structure in Lithuania. The shallowest E6 structure offshore Latvia was least affected by diagenetic processes and had the best reservoir quality that was mainly preserved during the experiment. Carbonate cement was represented by calcite and ankerite in the transitional reservoir sandstones of very low initial permeability in the upper part of the South Kandava structure. Its dissolution caused a significant increase in the effective porosity and permeability of sandstones, a decrease in the weight of samples, bulk and matrix density, and P and S wave velocities, demonstrating short-term dissolution processes. Only slight geochemical changes occurred during the experiment in offshore reservoir sandstones. Minor dissolution of carbonate and clay cements, feldspar and some accessory minerals, and possible minor precipitation of pore-filling secondary minerals associated with slight variations in rock properties, demonstrating both short-term and long-term processes, were suggested. As a novelty, this research shows the relationship between diagenetic alterations of the Cambrian Series 3 Deimena Formation reservoir sandstones and their changes caused by the CO 2 injection-like experiment.

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Energy transition impact on unconventional reservoirs: Carbon capture and sequestration

Belhaj

2023

Tight Oil Reservoirs

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Petrophysical Properties and Capacity of Prospective Structures for Geological Storage of CO2 Onshore and Offshore Baltic

Cited by 10 publications

References 7 publications

Potential structures for CO<sub>2</sub> geological storage in the Baltic Sea: Case study offshore Latvia

Potential structures for CO<sub>2</sub> geological storage in the Baltic Sea: Case study offshore Latvia

Experimental modeling of CO₂‐fluid‐rock interaction: The evolution of the composition and properties of host rocks in the Baltic Region

Energy transition impact on unconventional reservoirs: Carbon capture and sequestration

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Petrophysical Properties and Capacity of Prospective Structures for Geological Storage of CO2 Onshore and Offshore Baltic

Cited by 10 publications

References 7 publications

Potential structures for CO<sub>2</sub> geological storage in the Baltic Sea: Case study offshore Latvia

Potential structures for CO<sub>2</sub> geological storage in the Baltic Sea: Case study offshore Latvia

Experimental modeling of CO2‐fluid‐rock interaction: The evolution of the composition and properties of host rocks in the Baltic Region

Energy transition impact on unconventional reservoirs: Carbon capture and sequestration

Contact Info

Product

Resources

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Experimental modeling of CO₂‐fluid‐rock interaction: The evolution of the composition and properties of host rocks in the Baltic Region