Pore characterization of unconventional reservoirs

This study proposes an image-based idea for analyzing the complex geometric characteristics of reservoir spaces using various change curves of the pore geometric attributes to subdivide and evaluate tight reservoir rocks from micron to centimeter thicknesses. Using advanced imaging and image-process...

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Main Author: Shuheng Du
Format: Article
Language:English
Published: KeAi Communications Co., Ltd. 2022-08-01
Series:Natural Gas Industry B
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2352854022000535
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author Shuheng Du
author_facet Shuheng Du
author_sort Shuheng Du
collection DOAJ
description This study proposes an image-based idea for analyzing the complex geometric characteristics of reservoir spaces using various change curves of the pore geometric attributes to subdivide and evaluate tight reservoir rocks from micron to centimeter thicknesses. Using advanced imaging and image-processing technologies, in this study, we transform information from reservoir images into a vertical stratigraphy via an imaging-based method. The new parameter system incorporates three categories of parameters, size (S), morphology (M), and direction (D), to quantitatively and comprehensively characterize the pores of unconventional reservoir rocks. Given these three categories of the parameters, the curve at a certain depth value can be used to clearly identify obvious interfaces, which constitute high tip values. These interfaces may indicate that the hydrodynamic conditions, stress conditions of the reservoir, temperature and pressure, or other physical or chemical conditions changed significantly at these points, allowing the sedimentary compaction process to be well documented at the microscale level. This indicates that, from a micro-level perspective, we can find micro-evidence of the hydrodynamic conditions at the time of formation. Such information can help strengthen our understanding of the geological formation processes of unconventional hydrocarbon reservoirs.
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spelling doaj.art-9f69c02576814bde9106db163f7b8d092024-03-02T19:39:31ZengKeAi Communications Co., Ltd.Natural Gas Industry B2352-85402022-08-0194365375Pore characterization of unconventional reservoirsShuheng Du0State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China; School of Engineering Science, University of Chinese Academy of Sciences, Beijing 100049, ChinaThis study proposes an image-based idea for analyzing the complex geometric characteristics of reservoir spaces using various change curves of the pore geometric attributes to subdivide and evaluate tight reservoir rocks from micron to centimeter thicknesses. Using advanced imaging and image-processing technologies, in this study, we transform information from reservoir images into a vertical stratigraphy via an imaging-based method. The new parameter system incorporates three categories of parameters, size (S), morphology (M), and direction (D), to quantitatively and comprehensively characterize the pores of unconventional reservoir rocks. Given these three categories of the parameters, the curve at a certain depth value can be used to clearly identify obvious interfaces, which constitute high tip values. These interfaces may indicate that the hydrodynamic conditions, stress conditions of the reservoir, temperature and pressure, or other physical or chemical conditions changed significantly at these points, allowing the sedimentary compaction process to be well documented at the microscale level. This indicates that, from a micro-level perspective, we can find micro-evidence of the hydrodynamic conditions at the time of formation. Such information can help strengthen our understanding of the geological formation processes of unconventional hydrocarbon reservoirs.http://www.sciencedirect.com/science/article/pii/S2352854022000535PoreCharacterizationUnconventional reservoirImage processing
spellingShingle Shuheng Du
Pore characterization of unconventional reservoirs
Natural Gas Industry B
Pore
Characterization
Unconventional reservoir
Image processing
title Pore characterization of unconventional reservoirs
title_full Pore characterization of unconventional reservoirs
title_fullStr Pore characterization of unconventional reservoirs
title_full_unstemmed Pore characterization of unconventional reservoirs
title_short Pore characterization of unconventional reservoirs
title_sort pore characterization of unconventional reservoirs
topic Pore
Characterization
Unconventional reservoir
Image processing
url http://www.sciencedirect.com/science/article/pii/S2352854022000535
work_keys_str_mv AT shuhengdu porecharacterizationofunconventionalreservoirs