Wyznaczanie całkowitej zawartości węgla organicznego TOC w skałach łupkowych z wykorzystaniem profilowań geofizyki otworowej na przykładzie danych z basenu bałtyckiego

Waszkiewicz, Sebastian; Krakowie, Agh Akademia Górniczo-Hutnicza im. St. Staszica w; Karczewski, Jerzy; Krakowska, P.; Jarzyna, J.

doi:10.18668/ng.2018.11.02

2018

DOI: 10.18668/ng.2018.11.02

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Wyznaczanie całkowitej zawartości węgla organicznego TOC w skałach łupkowych z wykorzystaniem profilowań geofizyki otworowej na przykładzie danych z basenu bałtyckiego

Sebastian Waszkiewicz

Agh Akademia Górniczo-Hutnicza im. St. Staszica w Krakowie

Jerzy Karczewski

et al.

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2021

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“…The most popular are the methods described by Schmoker [57] or Passey [58]. The use of empirical methods such as regression or multiple regression also give interesting results [59]. By applying prior cluster analysis, the calculation of the required parameters can be performed in detail.…”

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Vitrinite Equivalent Reflectance Estimation from Improved Maturity Indicator and Well Logs Based on Statistical Methods

Waszkiewicz

Krakowska-Madejska

2021

Energies

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Estimation and correct determination of vitrinite equivalent reflectance in rock is crucial for the assessment of the source rock in both conventional and unconventional hydrocarbon deposits. These parameters can be determined in laboratories on rock samples. Laboratory measurements provide only point information. However, the use of well logs could overcome discontinuities in the data and provide parameters throughout a study interval. Attention has been paid to the estimation of TOC based on well logs. Vitrinite equivalent reflectance estimation is less well discussed and most papers reported cases with high TOC content in analyzed deposits. In this paper, the estimation of improved Ro is presented using a calculated maturity indicator with well logs. As the organic matter content is not high, additional steps were required for the calculation. To improve the quality of the fit and to find similar intervals, the data were grouped using cluster and neural network analysis. The next step was to use the resistivity log to improve the obtained maturity indicator. Due to the changing properties of kerogen with the type and degree of thermal maturity, this approach turned out to be reliable. The use of resistivity significantly increased the correlation coefficient and reduced errors. The method was tested on two wells with different type and maturity of kerogen. The obtained results are satisfactory, which makes it possible to use the method even in formations with a low organic matter content.

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confidence: 99%

Vitrinite Equivalent Reflectance Estimation from Improved Maturity Indicator and Well Logs Based on Statistical Methods

Waszkiewicz

Krakowska-Madejska

2021

Energies

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Wyznaczanie całkowitej zawartości węgla organicznego TOC w skałach łupkowych z wykorzystaniem profilowań geofizyki otworowej na przykładzie danych z basenu bałtyckiego

Cited by 1 publication

References 4 publications

Vitrinite Equivalent Reflectance Estimation from Improved Maturity Indicator and Well Logs Based on Statistical Methods

Vitrinite Equivalent Reflectance Estimation from Improved Maturity Indicator and Well Logs Based on Statistical Methods

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