image processing based characterisation of coal cleat networks

Anisotropic characteristics of lowrank coal fractures in the Fukang ...

Anisotropic characteristics of lowrank coal fractures in the Fukang ...

The butt cleats and face cleats interlace with each other and form complex fracture network in cross sections of coal block. It was assumed that all the fractures in the processed images were approximate rectangles. The lengths of rectangles represent measured values, while the widths represent averaged values.

Hubungan Sebaran Cleat Dengan Nilai Proximate Batubara Pada ...

Hubungan Sebaran Cleat Dengan Nilai Proximate Batubara Pada ...

Estimation of resources and reserves of minerals important for ease of exploitation commercially of deposits of minerals, because the resources and reserve estimation results can determine investment and estimates the time required by the company in carrying out mine business This research uses cross setion method for calculating of coal volume ...

An intelligent system to identify coal maceral groups using markov ...

An intelligent system to identify coal maceral groups using markov ...

Galindo Sergio., Bringemeier D. and Scheuermann A., Image processing based characterisation of coal cleat networks, ... An approach on determination on coal quality using digital image processing, Int. Journal of Engineering Research and Applications 5 (12) (2015), 38 ...

Characterization of coal porosity and permeability evolution by ...

Characterization of coal porosity and permeability evolution by ...

Digital image processing is the use of computer algorithms to conduct image processing on digital images. A raw image of sample B is shown in Fig. 2 (a). The brightness contrasts shown in the images represent the Xray attenuation in each material, which depends on the atomic number and the density of the material (Van Geet et al., 2001).Voids in the tested coal sample are shown in black in ...

Coal Cleat/Fracture Segmentation Using Convolutional Neural Networks ...

Coal Cleat/Fracture Segmentation Using Convolutional Neural Networks ...

Cleats/fractures play a vital role in gas extraction from coal bed methane reservoirs. As such, fractures are identified in microcomputed tomography images by segmentation in detailed fracture characterization studies. Conventional segmentation methods include thresholdingbased, region growing, and hybrid methods. In digital images, these methods are unable to differentiate fractures from ...

/ | DeepDyve

/ | DeepDyve

Read "/" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. ... Milton, QLD, Australia article i nfo abstract Article history: Characterisation of the cleat network serves as the basis for estimating the hydraulic and mechanical ...

Facets of coalbed methane reservoir in East Bokaro Basin, India

Facets of coalbed methane reservoir in East Bokaro Basin, India

The pore network model signifying that the studied coal seams are microstructurally different comprises a lateral difference in pore and cleat/fracture. ... Image processing based characterization of coal cleat networks. Int. J. Coal Geol. (2017) ... Cleatscale characterization of coal: an overview. J. Nat. Gas Sci. Eng.

Frontiers | Experimental and numerical model of anisotropic ...

Frontiers | Experimental and numerical model of anisotropic ...

The permeability of coal in parallel face cleat direction is the largest, followed by the permeability of coal in parallel butt cleat direction, and that in vertical bedding direction is the minimum. The ratios of k x : k y : k z are ::1, ::1, ::1, and ::1 respectively when the CO 2 injection pressure increases ...

Nanomechanical Properties and PoreScale Characterization of Different ...

Nanomechanical Properties and PoreScale Characterization of Different ...

Characterization of coal microstructure and the associated rock mechanical properties are of key importance for coal seam exploration, coal bed methane development, enhanced coal bed methane production and CO2 storage in deep coal seams. Considerable knowledge exists about coal chemical properties, but less is known about the nanoscale to the microscale structure of coals and how they change ...

Characteristics of Pore and Fracture of Coal with Bursting ... MDPI

Characteristics of Pore and Fracture of Coal with Bursting ... MDPI

Coal is a complex heterogeneous and anisotropic material conformed with fractal characteristics. The pore and fracture characteristics have important influence on the dynamic disasters including rock burst and gas outburst, however, the relationship between them is not accurately investigated due to inadequate research method. The pore and fracture distribution of coal with different bursting ...

DigiCoal: A computational package for characterisation of coal cores ...

DigiCoal: A computational package for characterisation of coal cores ...

Conclusions. DigiCoal toolbox is a powerful tool for characterising fractured coal sample on multiple length scales based on 3D microCT data. It is divided into four building blocks. The building block of segmented image preprocessing can prepare the data to be favourable for subsequent quantitatively analyses.

Coal cleat reconstruction using microcomputed tomography imaging

Coal cleat reconstruction using microcomputed tomography imaging

Estimates of these parameters can be made from imagebased threedimensional (3D) characterization of coal cleats using Xray microcomputed tomography (μCT). One key step in this process, after cleat extraction, is the separation of individual cleats, without which the cleats are a connected network and statistics for different cleat sets ...

Image feature extraction and recognition model construction of coal and ...

Image feature extraction and recognition model construction of coal and ...

Using image recognition technology to realize coal gangue recognition is one of the development directions of intelligent fully mechanized caving mining. Aiming at the problem of low accuracy of ...

Stress sensitivity of coal reservoir and its impact on ... Springer

Stress sensitivity of coal reservoir and its impact on ... Springer

Image processing based characterisation of coal cleat networks. Int J Coal Geol, 169(1): 121. ... The characteristics and origins of cleat in coal from western north China. Int J Coal Geol, 47(1): 5162. Google Scholar Su X, Wang Q, Lin H, Song J, Guo H (2018). A combined stimulation technology for coalbed methane wells: part 1 theory and ...

Cleatscale characterisation of coal: An overview ScienceDirect

Cleatscale characterisation of coal: An overview ScienceDirect

To obtain the geometrical statistics of the coal cleat network at the core scale, quantitative image analysis methods on the segmented microCT images have been developed. BossieCodreanu et al. (2004) and ( Mazumder et al., 2006) measured cleat density, spacing, orientations and aperture sizes using microCT scanning.

Porosity and permeability characterization of coal: a microcomputed ...

Porosity and permeability characterization of coal: a microcomputed ...

1. Introduction. Coal is a dual porosity system containing micropores and a network of natural fractures known as cleats. Whereas the micropores account for most of the porosity in coal, the cleat network offers the permeability for fluid flow (Clarkson and Bustin, 1996, Moore, 2012, Puri et al., 1991).Cleats are characterized by two main orthogonal sets of fractures "face" and "butt ...

Roughwalled discrete fracture network modelling for coal ...

Roughwalled discrete fracture network modelling for coal ...

1. Introduction. Coal seam gas (CSG) is a form of unconventional natural gas extracted from coal bed reservoirs, whose production is mainly controlled by the underlying fracture networks, known as "cleats" [20], [58].In these reservoirs, the matrix is usually regarded to be relatively impermeable [62], [48], while the fractures contribute as the main hydraulic conductivity of the rock mass ...

PDF InternationalJournal of Coal Geology

PDF InternationalJournal of Coal Geology

Image processing based characterisation of coal cleat networks J. Busse *a, de Dreuzy b, Sergio Galindo Torres a, D. Bringemeier a,c, A. Scheuermann a *Corresponding author:, +61 40 1906 327 a Geotechnical Engineering Centre, School of Civil Engineering, University of Queensland, St. Lucia, QLD, Australia b

International Journal of Coal Geology ScienceDirect

International Journal of Coal Geology ScienceDirect

select article Image processing based characterisation of coal cleat networks. ... Research article Full text access Image processing based characterisation of coal cleat networks. J. Busse, de Dreuzy, S. Galindo Torres, D. Bringemeier, A. Scheuermann. Pages 121 View PDF.

Detlef Bringemeier Technical Principal Hydrogeologist SMEC LinkedIn

Detlef Bringemeier Technical Principal Hydrogeologist SMEC LinkedIn

Image processing based characterisation of coal cleat networks. ... Characterisation of the cleat network serves as the basis for estimating the hydraulic and mechanical seam properties which in turn are fundamental for flow and geomechanical modelling in the context of underground coal mining. Cleat and cleat network geometry can be described ...

Minerals | Free FullText | Origin of a Petrographic Coal ... MDPI

Minerals | Free FullText | Origin of a Petrographic Coal ... MDPI

A petrographic coal structure of Late Permian coals from the Liupanshui coalfield, Western Guizhou, SW China, has been distinguished for its novel macrolithological characteristics. Petrographic, mineralogical and geochemical studies have been conducted for a typical coal sample ( coal, Songhe coalmine, Panzhou County, China) and its geological genesis and significance for coalbed methane ...

CSIRO PUBLISHING | The APPEA Journal

CSIRO PUBLISHING | The APPEA Journal

Image processingbased characterisation of coal cleat networks. International Journal of Coal Geology 169, 121. | Image processingbased characterisation of coal cleat networks. Crossref | GoogleScholar Google Scholar | Connell LD, Mazumder S, Marinello S, Sander R, Camilleri M, Pan Z, Heryanto D (2013). Characterisation of Bowen Basin Coal ...

Quantitative characterization of coal microstructure and visualization ...

Quantitative characterization of coal microstructure and visualization ...

Based on image processing and 3D reconstruction, the pores (8%), mineral (3%), and coal matrix (89%) in coal were extracted. The accuracy of the reconstruction results was verified by mercury intrusion test and proximate analysis. (2) The pore size distribution show high heterogeneity in REV space.

PDF A threedimensional feature extractionbased method for coal cleat ...

PDF A threedimensional feature extractionbased method for coal cleat ...

processingbased methods for cleat separation have been reported (Jinget al., 2016; Busse et al., 2017), there is a limitation that the 3D spatial continuity of individual cleats has not been ...

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