4.7 Article

Multifractal Characteristics and Genetic Mechanisms of Pore Throat Structures in Coal Measure Tight Sandstone

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article Energy & Fuels

Pore structure heterogeneity of Wufeng-Longmaxi shale, Sichuan Basin, China: Evidence from gas physisorption and multifractal geometries

Yang Wang et al.

Summary: Understanding the heterogeneity of nanoscale pore structures is crucial for evaluating hydrocarbon flow in porous reservoirs, and multifractal analysis is an effective method to assess pore connectivity and heterogeneity. The comparison between shale and isolated organic matter reveals differences in pore heterogeneity characteristics, with mineral-associated micropores enhancing heterogeneity and mineral-associated meso-macropores reducing heterogeneity. Total organic carbon content and pore volume also impact pore heterogeneity, with more mature shale exhibiting stronger micropore but weaker meso-macropore heterogeneity.

JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING (2022)

Article Energy & Fuels

Spectroscopic (FTIR, 1H NMR) and SEM investigation of physicochemical structure changes of coal subjected to microwave-assisted oxidant stimulation

He Li et al.

Summary: This paper introduces the concept of using microwave-assisted oxidation to enhance the permeability of coalbed methane (CBM) reservoirs. The study shows that microwave-assisted oxidation can change the physicochemical structure of coal and improve its permeability.
Article Geosciences, Multidisciplinary

Influence of Pore Structure Particularity and Pore Water on the Occurrence of Deep Shale Gas: Wufeng-Longmaxi Formation, Luzhou Block, Sichuan Basin

Xueyuan Li et al.

Summary: The pore structure and pore water in deep shale gas reservoirs are unique and have a significant impact on gas occurrence. The development of pores by organic matter controls the connectivity of deep shale. Different burial depths and beds result in significant differences in pore structure, and mineral anti-compaction protection pores and reservoir fluid over-pressure are crucial for the development of organic pores. Primary formation water plays a vital role in the occurrence and enrichment of shale gas.

NATURAL RESOURCES RESEARCH (2022)

Article Geosciences, Multidisciplinary

Fractal Analysis of Pore Structure Differences Between Shale and Sandstone Based on the Nitrogen Adsorption Method

Sai Xu et al.

Summary: Pore structure is a critical factor influencing the physical properties of oil and gas reservoirs, and it varies greatly with the reservoir rock type. This study analyzed the pore structures of shale and sandstone using low-pressure nitrogen adsorption experiments and fractal theory. The results showed significant differences in pore shape, distribution, specific surface area, and pore size between shale and sandstone. Fractal dimensions were found to be important parameters in characterizing the pore structure. The study highlights the usefulness of fractal theory in characterizing unconventional reservoirs.

NATURAL RESOURCES RESEARCH (2022)

Article Geosciences, Multidisciplinary

Multifractal Investigation on Multi-scale Pore Structure Heterogeneity of High Rank Coal Reservoirs

Ruirui Li et al.

Summary: Determining pore structure is crucial for estimating coalbed methane and primary recovery. This study used various fluid intrusion technologies to determine the pore structures of coal samples at different scales and applied multifractal theory to quantitatively evaluate the heterogeneity. The results revealed different distributions of pore size in macropores, micropores, and mesopores, and the clay content had a significant impact on the heterogeneity. Micropores were found to provide the majority of pore surface area and total volume. Moreover, the pore structure exhibited multifractal characteristics and the multifractal parameters were sensitive indicators for determining heterogeneity.

NATURAL RESOURCES RESEARCH (2022)

Article Geosciences, Multidisciplinary

Pore Structure Characteristics of Ultra-Low Permeability Reservoirs

Daiyin Yin et al.

Summary: The study focuses on the pore structure characteristics of ultra-low permeability reservoirs and their impact on permeability and reservoir development. Results show that as permeability decreases, the frequency distribution curves of throat radius and pore-throat ratio change significantly, with a strong correlation to permeability.

NATURAL RESOURCES RESEARCH (2021)

Article Geosciences, Multidisciplinary

Pore structure, fractal characteristics and permeability prediction of tight sandstones: A case study from Yanchang Formation, Ordos Basin, China

Wenchao Dou et al.

Summary: Several fractal models based on MIP have been proposed for studying the fractal property of porous materials, but results from different models may not always be consistent. By combining various analysis techniques to study the pore structure and petrophysical properties of tight sandstones, it was found that different MIP fractal models usually give different results.

MARINE AND PETROLEUM GEOLOGY (2021)

Article Chemistry, Physical

Multi-scale multi-dimensional characterization of clay-hosted pore networks of shale using FIBSEM, TEM, and X-ray micro-tomography: Implications for methane storage and migration

Hongjian Zhu et al.

Summary: Researchers characterized various clay-rich shales using a multi-scale multi-dimensional workflow, such as FIBSEM, TEM, and X-ray micro-tomography (mCT), to visualize and quantify the nature of clay-hosted pore networks. The study revealed the significant role of clay-hosted pore networks in shale gas reservoirs as the dominant controls on petrophysical properties.

APPLIED CLAY SCIENCE (2021)

Article Energy & Fuels

Multifractal analysis of coal pore structure based on NMR experiment: A new method for predicting T2 cutoff value

Yang Zhao et al.

Summary: Nuclear magnetic resonance (NMR) was used to study the pore structure of four types of coal samples and analyze the multifractal characteristics. The results showed that all coal samples were dominated by micropores and had similar multifractal characteristics, with a linear relationship between T-2 cutoff values and multifractal characteristic parameters. Models were developed to predict T-2 cutoff values with high accuracy.
Article Energy & Fuels

Characterization of geochemical properties and factors controlling the pore structure development of shale gas reservoirs

Omer Iqbal et al.

Summary: This study investigates the pore development and hydrocarbon generation potential of lacustrine Roseneath and Murteree shale formations in the Cooper Basin, Australia. The results show that organic content, thermal maturity, mineral composition, and clay minerals play a significant role in controlling pore development in these shale formations.

JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING (2021)

Article Energy & Fuels

Determinations of the multifractal characteristics of the pore structures of low-, middle-, and high-rank coal using high-pressure mercury injection

Miao Zhang et al.

Summary: The multifractal characteristics of pore structures in coal are influenced by coalification degrees, mineral content, vitrinite, and inertinite, leading to variations in the complexity of pore structures. Micropores and mesopores have opposing effects on the multifractal characteristics of pore structures.

JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING (2021)

Article Geosciences, Multidisciplinary

Gas Adsorption Characterization of Pore Structure of Organic-rich Shale: Insights into Contribution of Organic Matter to Shale Pore Network

Yang Wang et al.

Summary: The study shows that organic matter and organic matter-hosted pores play significant roles in the pore network of Wufeng-Longmaxi shale. The pore structure heterogeneity of the bulk shale is stronger than that of isolated organic matter, and pores associated with minerals enhance the heterogeneity to some extent. Organic matter and its hosted pores contribute significantly to the entire pore network of Wufeng-Longmaxi shale.

NATURAL RESOURCES RESEARCH (2021)

Article Geosciences, Multidisciplinary

Multifractal Analysis of Pore Structure in Middle- and High-Rank Coal by Mercury Intrusion Porosimetry and Low-Pressure N2 Adsorption

Shasha Zhang et al.

Summary: This study investigated the pore heterogeneity of coal using different methods and analyzed the multifractal characteristics of coal pore structures. The results revealed that the heterogeneity and complexity of pore structures increase with the coalification degree.

NATURAL RESOURCES RESEARCH (2021)

Article Energy & Fuels

Fractal analysis of CT images of tight sandstone with anisotropy and permeability prediction

Yu Yang et al.

Summary: This study characterized the heterogeneity of pore structure in tight sandstone using micro CT and image processing technology, and explored the potential of fractal theory in revealing pore structure characteristics, obtaining pore structure parameters through the relationship between fractal dimension and porosity.

JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING (2021)

Article Energy & Fuels

Fluid distribution and pore structure multifractal characteristics analysis of coal measure mudstone

Zhang Miao et al.

Summary: The pore structure of coal measure mudstones is highly heterogeneous and influenced by factors such as composition, maturity, and mineral types. Clay minerals have a significant impact on pore structure, with opposite effects compared to feldspar. The complexity of the pore network and connectivity in mudstones is affected by various mineral compositions.

JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING (2021)

Article Energy & Fuels

Multifractal Analysis and Neural Network Prediction of Pore Structures in Coal Reservoirs Based on NMR T2 Spectra

Yong Sun et al.

Summary: Low-field nuclear magnetic resonance (NMR) is widely used to characterize the pore structure of coal. The T-2 spectra of different coal samples show typical distributions, and the pore structure has correlations with the T-2c values. Multifractal analysis and a BP neural network model can predict the T-2c values accurately. The trained BP neural network model is reliable for predicting T-2c values of similar coal samples.

ENERGY & FUELS (2021)

Article Geosciences, Multidisciplinary

Pore structure characterization of tight sandstones via a novel integrated method: A case study of the Sulige gas field, Ordos Basin (Northern China)

Ren-Shi Nie et al.

Summary: A novel integrated method was proposed to characterize the pore structure of tight sandstone reservoir, involving comprehensive analysis based on various techniques to identify multiple pore features and establish a permeability prediction model. The findings contribute to better understanding of the pore structure characteristics of tight sandstones.

JOURNAL OF ASIAN EARTH SCIENCES (2021)

Article Geosciences, Multidisciplinary

Pore-throat structure and fractal characteristics of tight sandstones in Yanchang Formation, Ordos Basin

Yiqian Qu et al.

MARINE AND PETROLEUM GEOLOGY (2020)

Article Engineering, Geological

Experimental Study on Coal Damage Subjected to Microwave Heating

He Li et al.

ROCK MECHANICS AND ROCK ENGINEERING (2020)

Article Geosciences, Multidisciplinary

Pore connectivity and water accessibility in Upper Permian transitional shales, southern China

Mengdi Sun et al.

MARINE AND PETROLEUM GEOLOGY (2019)

Article Energy & Fuels

Binary pore structure characteristics of tight sandstone reservoirs

Zhu Haihua et al.

PETROLEUM EXPLORATION AND DEVELOPMENT (2019)

Article Geosciences, Multidisciplinary

Fractal analysis of tight shaly sandstones using nuclear magnetic resonance measurements

Jin Lai et al.

AAPG BULLETIN (2018)

Review Geosciences, Multidisciplinary

A review on pore structure characterization in tight sandstones

Jin Lai et al.

EARTH-SCIENCE REVIEWS (2018)

Article Energy & Fuels

Tight chalk: Characterization of the 3D pore network by FIB-SEM, towards the understanding of fluid transport

Ophelie Fay-Gomord et al.

JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING (2017)

Article Energy & Fuels

Multifractal analysis of Hg pore size distributions of tectonically deformed coals

Wei Li et al.

INTERNATIONAL JOURNAL OF COAL GEOLOGY (2015)

Article Energy & Fuels

Characterization of Brazilian tight gas sandstones relating permeability and Angstrom-to micron-scale pore structures

Mayka Schmitt et al.

JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING (2015)

Article Energy & Fuels

Fractal analysis of tight gas sandstones using high-pressure mercury intrusion techniques

Jin Lai et al.

JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING (2015)

Article Environmental Sciences

Multifractal Description of Nitrogen Adsorption Isotherms

J. Paz Ferreiro et al.

VADOSE ZONE JOURNAL (2009)

Article Soil Science

Multifractal characterization of soil pore systems

AND Posadas et al.

SOIL SCIENCE SOCIETY OF AMERICA JOURNAL (2003)