MTW European Type Trapezium Mill
Input size:30-50mm
Capacity: 3-50t/h
LM Vertical Roller Mill
Input size:38-65mm
Capacity: 13-70t/h
Raymond Mill
Input size:20-30mm
Capacity: 0.8-9.5t/h
Sand powder vertical mill
Input size:30-55mm
Capacity: 30-900t/h
LUM series superfine vertical roller grinding mill
Input size:10-20mm
Capacity: 5-18t/h
MW Micro Powder Mill
Input size:≤20mm
Capacity: 0.5-12t/h
LM Vertical Slag Mill
Input size:38-65mm
Capacity: 7-100t/h
LM Vertical Coal Mill
Input size:≤50mm
Capacity: 5-100t/h
TGM Trapezium Mill
Input size:25-40mm
Capacity: 3-36t/h
MB5X Pendulum Roller Grinding Mill
Input size:25-55mm
Capacity: 4-100t/h
Straight-Through Centrifugal Mill
Input size:30-40mm
Capacity: 15-45t/h
The petrophysical properties of coal and the pore structure in various coal
Research on petrophysical properties and porosity evolution of
2024年3月1日 The petrophysical characteristics and porosity evolution of cyclic fracturing coal under the triaxial impact test were studied from three aspects: microscopic pore structure, 2021年9月28日 The findings of this study could enhance the understanding of the multiscale pore structure of CURs and provide insights into the mechanisms that control gas storage, Pore structure complexity and its significance to the petrophysical The findings of this study could enhance the understanding of the multiscale pore structure of CURs and provide insights into the mechanisms that control gas storage, transport, and Pore structure complexity and its significance to the petrophysical 2024年8月16日 The results showed that the porosity and pore distribution in coal influence its strength The development of plastic zones in coal affected by pores can be divided into three Strength Evolution Characteristics of Coal with Different Pore
Classification methods of pore structures in coal: A review and new
2023年2月1日 Based on the CH 4 occurrence and migration characteristics in coal, a new pore classification method is proposed in this work The pore structures in coal are divided into four 2024年4月5日 The results indicated that as the degree of coal metamorphism increases, microtransition pores increase significantly, mesopores–macropores decrease, and the Determining the pore structure and fluid characteristics of 2021年6月17日 In this study, the fullsize pore structure characteristics of six differentrank coal samples were investigated and analyzed from three perspectives, namely, pore shape, pore Pore Structure Characteristics and Evolution Law of DifferentRank 2023年12月1日 Understanding the dynamic mechanical behaviors and microstructural properties of outburstprone coal is significant for preventing coal and gas outbursts during underground Research on petrophysical properties and porosity evolution of
Determining the pore structure and fluid characteristics of
2024年4月5日 Experimental study of effect of liquid nitrogen cold soaking on coal pore structure and fractal characteristics,” Energy 275, (2023) Effect of coalification jumps on petrophysical properties of various metamorphic coals from different coalfields in China,”2024年8月16日 Water–rock interactions affect mineral inclusions and the pore structure of rock, subsequently affecting its mechanical and seepage properties A method for quantitative analysis of the pore and mineral inclusion evolution characteristics of coal samples based on CT scanning is proposed Accordingly, numerical model construction and block division of mineral Strength Evolution Characteristics of Coal with Different Pore 2022年11月10日 Coal is a complex, porous medium with pore structures of various sizes Therefore, it is difficult to accurately describe the characteristics of pore structure by using the traditional geometry Fractal Dimension Analysis of Pores in Coal Reservoir 2024年10月9日 This study investigates the influence of mineralogy, particularly anhydrite relative to dolomite content, on the pore structure, petrophysical characteristics, and fluid flow potential of six rock samples (S1 to S6) from a Middle East outcrop reservoir The main purpose of this research is to give novel perception into the interplay of the rock mineralogy, petrophysical Exploring the Impact of Mineralogy on Pore Structure and Fluid
The Characterization of Shale Differences Based on Petrophysical
2022年5月24日 The pore structure and the petrophysical properties are essential parameters during the marine and continental shale reservoir evaluation In order to the reveal the mechanism of the pore parameters differences and discuss whether the controlling factors of pore structure have extensive influence in different lithologies Based on the analysis of N2/CO2 isotherm 2015年11月27日 Permeability is one of the key petrophysical properties for the coalbed methane (CBM) reservoirs, which directly impact the CBM production rate and the amount of CBM that can be ultimately recovered Due to the complex and heterogeneous nature of coals, an accurate determination for permeability of coals is required Coal permeability is often determined by Investigating the Effects of SeepagePores and Fractures on Coal 2021年9月28日 Pore structure determination is the key to estimating gasinplace and potential primary recovery of coalbed methane In this study, various fluid intrusion technologies were applied to determine Pore structure complexity and its significance to the petrophysical 2022年3月29日 The petrophysical properties and pore structure parameters of the samples obtained based on the highpressure mercury intrusion and Dong, H J (2021) Mechanical Properties and Failure Mechanism of Combined Bodies with Different CoalRock Ratios and Combinations J Mining Strata Control Eng 3 (2), doi:1013532/j Study on Pore Structure and the Microscopic Mechanism of the
Experimental investigation on the fractal feature of porefracture
2022年7月26日 The quantitative evaluation of porefractures which links to methane storage space and transportation channels is of great significance for underground gas extraction and coalbed methane development This study is aimed at revealing the surface roughness and structure irregularity of typical bituminous coal samples using the combination of SEM, box 2024年10月28日 A comprehensive investigation was conducted on the material composition and pore structure variations of coals from nine distinct sedimentary basins in China, specifically focusing on the FCJ, SCJ, and TCJ Additionally, an analysis of the disparities in coal adsorption properties and the factors influencing them was performedCoal pore size distribution and adsorption capacity controlled by 2018年10月1日 The effect of coalification jumps on petrophysical properties, and the evolution of porosity and permeability of metamorphic coals are poorly understood, which significantly influences coalbed Effect of coalification jumps on petrophysical properties of various 2023年10月1日 Pore structure is a crucial factor affecting the physical properties of porous materials, and understanding the mechanisms and laws of these effects is of great significance in the fields of geosciences and petroleum engineering However, it remains a challenge to accurately understand and quantify the relationship between pore structures and effective Modeling and petrophysical properties of digital rock models
Imagebased quantitative probing of 3D heterogeneous pore structure
2024年8月20日 Coalbed methane (CBM) recovery is attracting global attention due to its huge reserve and low carbon burning benefits for the environment Fully understanding the complex structure of coal and its transport properties is crucial for CBM development This study describes the implementation of mercury intrusion and μCT techniques for quantitative analysis of 3D 2023年1月16日 The heterogeneity of the pore structure of coal reservoirs affects the desorption and diffusion characteristics of coalbed methane, and determining its distribution law is conducive to improving the theory of coalbed methane development The central and eastern parts of the Qinshui Basin are rich in coalbed methane resources, but the heterogeneity characteristics of Pore Structure Multifractal Characteristics of Coal Reservoirs in 2019年3月13日 The petrophysical properties of coal will vary during coalification, and thus affect the methane adsorption capacity In order to clarify the variation rule and its controlling effect on methane Variation of Petrophysical Properties and Adsorption Capacity 2020年8月1日 Coal structure refers to the internal structural characteristics of coals including the degree of macroscopic and microscopic deformation, pore structure, and mechanical properties after various Constraining coalbed methane reservoir petrophysical and
Study on fullscale pores characterization and heterogeneity of coal
2024年7月23日 The characteristics and heterogeneity of coal pores are crucial for understanding the production mechanism of coalbed methane (CBM) In this study, coal samples with varying degrees of Pore structure complexity and its significance to the petrophysical properties of coal measure gas reservoirs in 作者： Hou, Xiaowei ， Wang, Yang ， Zhu, Yanming ， Xiang, Jie 展开 摘要： The pore structure of continuous unconventional reservoirs (CURs) in coal measures was investigated using different technologies for 29 Pore structure complexity and its significance to the petrophysical 2024年3月1日 It is believed that the closer the fractal dimension value is to 2, the higher the rock homogeneity and the closer it is to 3, the more complicated the pore structure and the more significant the pore surface roughness 46, 47 According to the fractal geometry theory 48, free pores of coal have superior fractal properties than closed poresResearch on petrophysical properties and porosity evolution of 2017年12月1日 There were great differences in the pore structure of different coal ranks; highrank coal was dominated by micropores, and the proportion of mesopores and macropores of mediumrank coal was Investigation of pore structure and petrophysical property in
Characterizing the Complexity Assembly of Pore
2020年11月18日 1 Introduction The concept of “dualporosity” was first introduced by Barenblatt and Zheltov to describe the pore structure of a matrix porous medium coupled with fractured networks, that is, the dualporosity Porosity plays a clearly important role in geology It controls fluid storage in aquifers, oil and gas fields and geothermal systems, and the extent and connectivity of the pore structure control fluid flow and transport through geological formations, as well as the relationship between the properties of individual minerals and the bulk properties of the rockCharacterization and Analysis of Porosity and Pore Structures2017年4月15日 Semantic Scholar extracted view of "Changes in the petrophysical properties of coal subjected to liquid The freeze–thaw treatment damages the pore structure of coal and thus increases its permeability In relaxation spectrometry for the determination of various petrophysical properties of clastic rocks, relativelyChanges in the petrophysical properties of coal subjected to 2023年12月1日 The results exhibit a disparity of petrophysical properties among two broad groups of rocks: rocks selected for possible storage of CO 2 have porosities of ∼ 1025%, permeabilities of ∼ 10 − 1610 − 13 m 2, μ msized porethroat size distribution, and mostly good pore connectivity; in contrast, the potential caprocks have porosities of ∼ 055%, Petrophysical properties of representative geological rocks
Characterizing the Complexity Assembly of Pore Structure in a Coal
2020年11月18日 The pore structure in a coal matrix is a dualporosity system where fractures and pores coexist and feature scaleinvariance properties, which would affect the occurrence and migration of coalbed methane (CBM) significantly2024年7月16日 Here, the study area is located in the south of the Yishan Slope of the Ordos Basin (), and we focus on O 1 m 5 2 − 3 the formation, which is also known as “weathering crust” ()The lithology is dominated by argillaceous dolomite, fine silty crystalline dolomite crystalline dolomite in the O 1 m 5 3 formation, and dolomite mainly developed during O 1 m 5 2 the Pore structure characteristics and influencing factors of dolomite 2023年1月5日 Studying the evolution of the pore structure of coal during spontaneous combustion is of great value in further understanding the mechanism of coal spontaneous combustion (CSC) and its prevention In this study, we selected three lowrank coals and used nuclear magnetic resonance (NMR) to visualize the macroscopic evolution of the pore Study on the evolution of the pore structure of low rank coal 2021年11月15日 Some forms of ECBM extraction via heat injection, including hightemperature carbon dioxide, hightemperature water vapour, and microwave heating, have been studied by several scholars and experts [13], [14], [15]Heatinjection mining promotes the desorption of CBM and changes the pore structure of coal through thermal fracture caused by high temperatures, Experimental study on the evolution of porefracture structures
Threedimensional spatial structure of the macro
The coal reservoir is a complex porous medium, which contains matrixes, pores, and minerals (Ni et al 2017; Li et al 2019; Liu et al 2019)The pore structure directly affects the physical property of the coal reservoir (Fu et al 2017; Su et 2022年9月23日 The presence of complex structure coal seam, containing undeformed coals (UC), tectonically deformed coals (TDC), partings and rooffloor, has a significant effect on the safety of coal mining and the effectiveness of coalbed methane reservoir fracking This research attempts to study the complex structure CBM reservoir physical properties and rock Petrophysical and Mechanical Properties of Complex Structure the relationship between pore structures and petrophysical properties at the microscopic scale, providing more ideas and references for understanding the complex physical properties in porous media Keywords Hybrid modeling Pore structure Petrophysical properties Microscopic mechanism 1 IntroductionModeling and petrophysical properties of digital rock models 2021年8月26日 Analyzing and mastering the pore structure and fluid movability characteristics of coalmeasure sedimentary rocks is significant for the safe and effective development of unconventional resources In this work, nuclear magnetic resonance (NMR) experiments were carried out on three common fine sedimentary rocks (ie, shale, mudstone, and sandstone) Characterization of the Pore Structure and Fluid Movability of Coal
Modeling and petrophysical properties of digital rock models
2023年10月1日 Pore structure is a crucial factor affecting the physical properties of porous materials, and understanding the mechanisms and laws of these effects is of great significance in the fields of 2020年4月1日 Geological conditions on the eastern margin of the Ordos Basin are complex, and the amount of oil and gas exploration is low In this paper, taking the S block in the eastern Ordos Basin as an example, we investigated the petrophysical properties, minerals, elements and pore structures of the middle Permian Shihezi Formation tight sandstonesExperimental investigation of the petrophysical properties, 2023年1月16日 Pore structure heterogeneity is closely related to the degree of coalification, and with the increase in coalification, it is closely related to coal lithotype and quality, and high mineral and Pore Structure Multifractal Characteristics of Coal Reservoirs in The petrophysical properties of coal will vary during coalification, and thus affect the methane adsorption capacity In order to clarify the variation rule and its controlling effect on methane Relationship between the proximate analysis and different rank coals
Effect of high temperature on the physical properties and pore
2022年3月22日 This study investigated the effects of high temperatures on the petrophysical properties and pore structure characteristics of organicrich shale from the Longmaxi Formation using gravimetric method, helium porosity measurement, helium pulse decay permeability measurement, acoustic pulse transmission method, and lowpressure N 2 adsorption method