A workflow for reservoir characterization applied to presalt coquinas from the Linguado Field, Campos Basin, Brazil

Peçanha, Alessandra Alves; Lupinacci, Wagner Moreira; Ferreira, Danilo Jotta Ariza; Freire, Antônio Fernando Menezes

doi:10.1016/j.petrol.2019.106451

Cited by 10 publications

(2 citation statements)

References 4 publications

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“…Under a given pressure, the mercury at room temperature is pressed into the pores of the rock sample, and the contact surface between the capillary and the mercury will generate a capillary force in the opposite direction to the external pressure, thereby preventing the mercury from entering the capillary. When the pressure increases above the capillary force, the mercury will continue to penetrate the pores (Li C. L. et al, 2015;Pecanha et al, 2019). Therefore, a pressure value applied from the outside can be used to measure the size of the corresponding pores.…”

Section: ) High Pressure Mercury Intrusion Experimentsmentioning

confidence: 99%

Quantitative evaluation of reservoir quality of tight oil sandstones in chang 7 member of Ordos Basin

Qiu

Li²,

Liu³

et al. 2023

Front. Earth Sci.

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In order to establish a quantitative evaluation system for reservoir quality suitable for tight oil sandstones, in this study, taking the Chang 7 Member in the Maling area of the Ordos Basin as an example, the nuclear magnetic resonance, clay mineral analysis, high pressure mercury injection analysis and logging interpretation technology have been used to carry out a comprehensive evaluation of the pore structures, sand body structures and oil-bearing properties of tight oil sandstone reservoirs. The results show that the pseudo-capillary pressure curves transformed by the NMR T2 spectra are consistent with the capillary pressure curves measured by the core experiments. This method can be used for accurate characterization of the pore structures of the reservoir. The pore structure parameters calculated based on the pseudo-capillary pressure curves can accurately reflect the pore structures of the reservoirs such as micropores-thin throats and complex tortuosity. At the same time, the smoothness feature of conventional logging curves is used to evaluate the sand body structures and heterogeneity of the reservoir, and the apparent energy storage coefficient is introduced to quantitatively evaluate the oil-bearing properties of tight oil reservoirs. The evaluation results are in good agreement with the actual production situation. The larger the apparent energy storage coefficient, the higher the initial output of the oil wells. The evaluation results of the reservoir quality of the tight oil sandstones constructed in this paper are highly consistent with the production status, so the method has broad application prospects.

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Section: ) High Pressure Mercury Intrusion Experimentsmentioning

confidence: 99%

Quantitative evaluation of reservoir quality of tight oil sandstones in chang 7 member of Ordos Basin

Qiu

Li²,

Liu³

et al. 2023

Front. Earth Sci.

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“…A series of recent articles uses quantitative seismic interpretation techniques to characterize presalt reservoirs. Acoustic and elastic inversions are recurrent themes, as well as the use of impedance volumes for modeling reservoir properties, such as porosity and facies classification (Teixeira et al, 2017;Dias et al, 2019;Peçanha et al, 2019;Penna et al, 2019;Penna and Lupinacci, 2021). Acoustic impedance data has also been frequently used for the classification of multi-attribute seismic facies in presalt carbonate reservoirs (Jesus et al, 2019;Ferreira et al, 2019;Ferreira et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Understanding the relationship between acoustic impedance and porosity in a presalt carbonate reservoir of the Santos Basin

2021

Proceeding of the 17th International Congress of the Brazilian Geophysical

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The carbonate reservoirs in the Santos Basin presalt are of great importance in the national oil production scenario, being currently the most prolific source of oil in Brazil, with accumulations of excellent production, quality and high commercial value. Quantitative seismic interpretation assists in the characterization of these reservoirs of high geological complexity and in the challenges related to seismic imaging, making the bridge between variations in seismic amplitude and changes in rock properties. The present work aims to understand the relationships between acoustic impedance, porosity and clay volume through the definition of electrofacies. The crossplots and probability density functions (PDF) built for the electrofacies from the well data with the upscale showed a good correlation between the values of acoustic impedance and effective porosity when considering the reservoir, tight carbonate and igneous electrofacies, but it is difficult to distinguish between muddy and reservoir electrofacies. This work intended to evaluate the feasibility of using an acoustic impedance volume for future modeling of reservoir properties, and to evaluate the types of electrofacies that can be distinguished in a future classification of multiattribute seismic facies.

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Geological process modeling and geostatistics for facies reconstruction of presalt carbonates

Ferreira

Dutra²,

Castro

et al. 2021

Marine and Petroleum Geology

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A workflow for reservoir characterization applied to presalt coquinas from the Linguado Field, Campos Basin, Brazil

Cited by 10 publications

References 4 publications

Quantitative evaluation of reservoir quality of tight oil sandstones in chang 7 member of Ordos Basin

Quantitative evaluation of reservoir quality of tight oil sandstones in chang 7 member of Ordos Basin

Understanding the relationship between acoustic impedance and porosity in a presalt carbonate reservoir of the Santos Basin

Geological process modeling and geostatistics for facies reconstruction of presalt carbonates

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