Facies, petrophysical and geochemical properties of gravity-flow deposits in reservoir analogs from the Itararé Group (late Carboniferous), Paraná Basin, Brazil

Neves, Lara Ferreira; Guedes, Carlos Conforti Ferreira; Vesely, Fernando Farias

doi:10.1016/j.marpetgeo.2019.07.038

Cited by 5 publications

(2 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, it is urgent to carry out new logging techniques, new method tests and optimization of logging parameter series; (2) The current logging evaluation of tight oil sandstone reservoirs basically follows the idea of low permeability reservoirs, and its adaptability is obviously insufficient. Therefore, the logging evaluation contents, methods and standards of reservoir quality need to be evaluated (Yao et al, 2013;Zou et al, 2013;Neves et al, 2019;Hassane et al, 2021;Zhang et al, 2020).…”

Section: Introductionmentioning

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.

View full text Add to dashboard Cite

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.

show abstract

Section: Introductionmentioning

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.

View full text Add to dashboard Cite

show abstract

“…1a). The Itararé Group (from Gondwana I Supersequence) has long been studied based on faciological and stratigraphic (Schneider et al, 1974;França & Potter, 1988;Vesely & Assine, 2006;d'Ávila, 2009;Neves et al, 2019), ichnological (Noll & Netto, 2018), and geophysical data (Costa et al 2018). Some of these studies investigated the relationship between depositional aspects and the petrophysical properties of these deposits using D r a f t 2 High-Resolution Outcrop Gamma-Ray Spectrometry data from wells and outcrops (e.g.…”

Section: Introductionmentioning

confidence: 99%

High resolution gamma-ray spectrometry logging applied in the interpretation of sedimentary processes and environments of the Itararé Group (Permo-Carboniferous), Paraná Basin, Santa Catarina state

Miranda,

Nascimento,

Castro

et al. 2023

Braz J Geophys

View full text Add to dashboard Cite

Outcrop gamma-ray spectrometric logging in the upper strata of the Campo Mourão Formation and lower strata of the Taciba Formation were used to investigate: (i) the influence of lithological variation on gamma-ray patterns; (ii) its potential to discriminate and identify lithotypes; and (iii) sedimentary processes and related environments of these Permo-Carboniferous strata. The gamma-ray logs were subdivided into three gamma-ray units, according to the total count, concentrations and contents of K, eU and eTh. These gamma-ray units were associated to three depositional units: Glaciolacustrine system with thin-bedded turbidites in the Campo Mourão Formation; and two submarine fans systems (channels, overbanks and lobes) with thick-bedded turbidites systems in the Taciba Formation. Gamma-ray spectrometry allowed distinguishing 'common' shales from black shales, which are often similar in the faciological description in fieldwork. Likewise, carbonate levels were identified as a function of the decrease in gamma-ray concentrations in black shales of the Campo Mourão Formation. The relationship between the radiometric data and the grain size indicated that, in the field, the lithological heterogeneity has a great influence on the ability of the gamma-ray spectrometer to distinguish lithotypes. The eTh/K and eTh/eU ratios were used to infer sedimentary processes and related environments. Through the eTh/eU ratio, a reducing environment, responsible for the precipitation of authigenic uranium in low sedimentation rate deposicional system, was evidenced, discriminating depositional units from different environments.

show abstract

Distinguishing different classes of mass-transport deposits in LPIA strata exposed in eastern Paraná Basin, Brazil

Kraft

Vesely

2023

Journal of South American Earth Sciences

View full text Add to dashboard Cite

Facies, petrophysical and geochemical properties of gravity-flow deposits in reservoir analogs from the Itararé Group (late Carboniferous), Paraná Basin, Brazil

Cited by 5 publications

References 13 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

High resolution gamma-ray spectrometry logging applied in the interpretation of sedimentary processes and environments of the Itararé Group (Permo-Carboniferous), Paraná Basin, Santa Catarina state

Distinguishing different classes of mass-transport deposits in LPIA strata exposed in eastern Paraná Basin, Brazil

Contact Info

Product

Resources

About