Factors Influenced Porosity of the Siliciclastic Rocks in the Baltic Cambrian Basin

Shogenova, Alla; Mens, K; Sliaupa, S.; Rasteniene, V.; Jõeleht, Argo; Kirsimäe, Kalle

doi:10.3997/2214-4609-pdb.5.p218

Cited by 4 publications

(2 citation statements)

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“…The absolute value of correlation is relatively low owing to shallow depth of the Estonian sedimentary basin. Such a correlation should be stronger in the deeper central and southern parts of the Baltic sedimentary basin, as has been described for the Baltic Cambrian rocks (Shogenova et al 2001(Shogenova et al , 2002.…”

Section: Discussionsupporting

confidence: 60%

Lithology and evolution of Devonian carbonate and carbonate-cemented rocks in Estonia

Kleesment¹,

Shogenova²

2005

Proceedings of the Estonian Academy of Sciences. Geology

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Section: Discussionsupporting

confidence: 60%

Lithology and evolution of Devonian carbonate and carbonate-cemented rocks in Estonia

Kleesment¹,

Shogenova²

2005

Proceedings of the Estonian Academy of Sciences. Geology

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“…Many researchers have studied the electrical conductivity and resistivity of rocks for years through laboratory experiments. − Archie presented equations that correlate several parameters of sandstone formation, such as porosity and water saturation. For most common resistivity measurements, Ohm’s law provides the background to determine the resistance from a measurement of the flowing current and the voltage drop.…”

Section: Introductionmentioning

confidence: 99%

Impacts of a New Drilling Fluid Invasion on Electrical Resistivity and Acoustic Velocity Measurements

Baggieri,

Carrasquilla,

Ceia

et al. 2024

Energy Fuels

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When mud filtrate invades a geological formation, it alters its physicochemical characteristics. This invasive process divides the formation into four zones: mud cake, flushed zone, and transitional; immediately after that, there is a virgin area. Each of these zones contains a mixture of fluids: drilling fluids and original formation fluids. Thus, all well-logging measurements are influenced by mud filtrate invasion. The goal of this research was to analyze the effects of a new drilling fluid system invasion, crudeglycerin-based aqueous mud (CGBAM), when estimating a rock− fluid system's physical properties through electrical and sonic properties (V p and V s ). To accomplish this objective, resistivity and transit time laboratory measurements were performed on Berea sandstone samples under dry conditions and brine-and mud filtrate-saturated conditions. According to the results, the invasion of this aforementioned mud filtrate did not affect the characterization of sandstones through sonic properties. Although the crude-glycerin-based aqueous mud has rheological behavior like that of an oil-based mud, it presented unusual behavior from an electrical resistivity and sonic point of view. CGBAM showed sonic properties like the water-based mud and resistive behavior between oil-and water-based muds; therefore, it improves the drilling process and geophysical interpretation regarding the clear distinction between the oil and water zones of the reservoir.

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The Baltic Basin: structure, properties of reservoir rocks, and capacity for geological storage of CO₂

Shogenova¹,

Šliaupa²,

Vaher³

et al. 2009

Estonian J. Earth Sci.

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Baltic countries are located in the limits of the Baltic sedimentary basin, a 700 km long and 500 km wide synclinal structure. The axis of the syneclise plunges to the southwest. In Poland the Precambrian basement occurs at a depth of 5 km. The Baltic Basin includes the Neoproterozoic Ediacaran (Vendian) at the base and all Phanerozoic systems. Two aquifers, the lower Devonian and Cambrian reservoirs, meet the basic requirements for CO 2 storage. The porosity and permeability of sandstone decrease with depth. The average porosity of Cambrian sandstone at depths of 80-800, 800-1800, and 1800-2300 m is 18.6, 14.2, and 5.5%, respectively. The average permeability is, respectively, 311, 251, and 12 mD. Devonian sandstone has an average porosity of 26% and permeability in the range of 0.5-2 D. Prospective Cambrian structural traps occur only in Latvia. The 16 largest ones have CO 2 storage capacity in the range of 2-74 Mt, with total capacity exceeding 400 Mt. The structural trapping is not an option for Lithuania as the uplifts there are too small. Another option is utilization of CO 2 for enhanced oil recovery (EOR). The estimated total EOR net volume of CO 2 (part of CO 2 remaining in the formation) in Lithuania is 5.6 Mt. Solubility and mineral trapping are a long-term option. The calculated total solubility trapping capacity of the Cambrian reservoir is as high as 11 Gt of CO 2 within the area of the supercritical state of carbon dioxide.

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Factors Influenced Porosity of the Siliciclastic Rocks in the Baltic Cambrian Basin

Cited by 4 publications

References 0 publications

Lithology and evolution of Devonian carbonate and carbonate-cemented rocks in Estonia

Lithology and evolution of Devonian carbonate and carbonate-cemented rocks in Estonia

Impacts of a New Drilling Fluid Invasion on Electrical Resistivity and Acoustic Velocity Measurements

The Baltic Basin: structure, properties of reservoir rocks, and capacity for geological storage of CO₂

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Factors Influenced Porosity of the Siliciclastic Rocks in the Baltic Cambrian Basin

Cited by 4 publications

References 0 publications

Lithology and evolution of Devonian carbonate and carbonate-cemented rocks in Estonia

Lithology and evolution of Devonian carbonate and carbonate-cemented rocks in Estonia

Impacts of a New Drilling Fluid Invasion on Electrical Resistivity and Acoustic Velocity Measurements

The Baltic Basin: structure, properties of reservoir rocks, and capacity for geological storage of CO2

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Product

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The Baltic Basin: structure, properties of reservoir rocks, and capacity for geological storage of CO₂