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Open AccessArticle

Development of a Permeability Formula for Tight and Shale Gas Reservoirs Based on Advanced High-Precision Lab Measurement Techniques

1
Faculty of Geology, Geophysics and Environmental Protection, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Krakow, Poland
2
Faculty of Mechanical Engineering and Robotics, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Krakow, Poland
3
Oil and Gas Institute—National Research Institute, Lubicz 25A, 31-503 Krakow, Poland
4
Faculty of Physics and Applied Computer Science, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Krakow, Poland
*
Author to whom correspondence should be addressed.
Academic Editor: José A. Torres
Energies 2021, 14(9), 2628; https://doi.org/10.3390/en14092628
Received: 9 February 2021 / Revised: 28 April 2021 / Accepted: 30 April 2021 / Published: 4 May 2021
(This article belongs to the Special Issue Advances in Shale Oil and Shale Gas Technologies)
Computed X-ray tomography (CT), together with pulse and pressure decay permeability methods were used to evaluate a formula for absolute reservoir permeability. For this reason, 62 core samples representing geological material of tight, gas-bearing sandstones, mudstones, limestones, and dolostones were studied. Samples were divided into two groups with lower and higher permeability values. Images of the pore space were processed and interpreted to obtain geometrical parameters of the objects (pores, microfractures) with 0.5 × 0.5 × 0.5 µm3 voxel size. Statistical methods, which included basic statistical analysis, linear regression, and multiple linear regression analysis, were combined to evaluate the formula for absolute permeability. It appeared that the following parameters: Feret Breadth/Volume, Flatness/Anisotropy, Feret Max/Flatness, moments of inertia around middle principal axis I2/around longest principal axis I3, Anisotropy/Flatness, Flatness/Anisotropy provided the best results. The presented formula was obtained for a large set of data and is based only on the geometric parameters of the pore space. The novelty of the work is connected with the estimation of absolute permeability using only data from the CT method for tight rocks. View Full-Text
Keywords: permeability; computed X-ray tomography; shale gas; tight rocks; geoscience; multiple linear regression permeability; computed X-ray tomography; shale gas; tight rocks; geoscience; multiple linear regression
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MDPI and ACS Style

Krakowska-Madejska, P.; Puskarczyk, E.; Habrat, M.; Madejski, P.; Dohnalik, M.; Jędrychowski, M. Development of a Permeability Formula for Tight and Shale Gas Reservoirs Based on Advanced High-Precision Lab Measurement Techniques. Energies 2021, 14, 2628. https://doi.org/10.3390/en14092628

AMA Style

Krakowska-Madejska P, Puskarczyk E, Habrat M, Madejski P, Dohnalik M, Jędrychowski M. Development of a Permeability Formula for Tight and Shale Gas Reservoirs Based on Advanced High-Precision Lab Measurement Techniques. Energies. 2021; 14(9):2628. https://doi.org/10.3390/en14092628

Chicago/Turabian Style

Krakowska-Madejska, Paulina; Puskarczyk, Edyta; Habrat, Magdalena; Madejski, Paweł; Dohnalik, Marek; Jędrychowski, Mariusz. 2021. "Development of a Permeability Formula for Tight and Shale Gas Reservoirs Based on Advanced High-Precision Lab Measurement Techniques" Energies 14, no. 9: 2628. https://doi.org/10.3390/en14092628

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