Pore fractal characteristics

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August undefined, 2024

WebIn mathematics, a fractal is a geometric shape containing detailed structure at arbitrarily small scales, usually having a fractal dimension strictly exceeding the topological dimension.Many fractals appear similar at various scales, as illustrated in successive magnifications of the Mandelbrot set. This exhibition of similar patterns at increasingly … WebFeb 12, 2024 · Results show that the pore space occupied by fluids within hydrate-bearing sands is inherently fractal. The area pore-size fractal dimension decreases but the tortuosity fractal dimension changes little with increasing hydrate saturation, and the sum of these two fractal dimensions can be used to predict the volume pore-size fractal dimension.

Pore Fractal Characteristics of Hydrate‐Bearing Sands and …

WebThe surface of C16 was covered with highly porous apatite layers comprising large pores measuring 600–800 nm and smaller pores inside it measuring 200–400 nm ... In particular, C12 with biomimetic hierarchical micro-/nanohybrid topography demonstrated superior fractal features, the best capacity in protein adsorption and the ensuing ... WebFractal objects are characterized by self-similarity within a spatial range. The fractal dimension is calculated from the p exponent of Eq. 2, and gives information about the pore surface before and after the addition of the natural extract. For mass fractals (2 rdw cd low meaning

New cognition on pore structure characteristics of Permian …

WebWith the development of coal-bed methane (CBM) mining technology, deep coal-beds have become the target of CBM development. In order to simulate changes in coal adsorption and permeability characteri WebFinally, combined with TOC and mineral compositions, the relationship between pore structure and fractal dimension is discussed. And the following research results are obtained. First, dominant lithofacies of Dalong Formation are argillaceous-rich siliceous shale and argillaceous-rich/siliceous mixed shale, which has smaller specific surface area … WebFeb 15, 2024 · Characteristics of pore structure of different metamorphic coal were discussed. • The fractal dimension characteristics of pore structure are studied. • Through fractal dimensions of pores, the accurate data of pore sizes in a wider range are obtained. • The new pore classification scheme is put forward by piecewise fractal dimensions. rdw computer

$Pore structure and fractal characteristics of Ordovician Majiagou ...$

Frontiers Pore structure and fractal characteristics of the marine ...

WebJun 15, 2024 · The pore-size distribution and the fractal characteristics of the microscopic pore structure are systematically examined by means of nitrogen adsorption and mercury intrusion tests. ... The fractal dimension of the microscopic pore structure reveals two inflection points measuring approximately 5 and 80 nm, ... WebMay 15, 2024 · To study the pore structure and fractal characteristics of pulverized intact coal and tectonic coal, proximate analysis, gas adsorption/desorption, and N 2 (77K) adsorption experiments were performed. The results show that micropore, minipore and mesopore volumes, as well as specific surface areas (SSAs), are dependent on the … rdw count lowWebPore pressure prediction Wellbore stability in HPHT conditions Hydraulic fracturing with acid and proppant ... The lack of direct data and the complexities of the fracture characteristics make fracture network prediction and modelling in these applications very ... Application of power-spectrum–volume fractal method for detecting hypogene, ... rdw contact email

"WebApr 13, 2024 · The D values of MNAs were 2.93 (D S) and 2.87 (D N), respectively, indicating a typical surface fractal feature and the dominance of open pores in the composite aerogels. " - Pore fractal characteristics

Pore fractal characteristics

Synthesis and characterization of a polyurethane carrier used for a …

WebJan 6, 2024 · 4.4 Pore fractal characteristics. The D is widely used to characterize the surface roughness and spatial structure complexity of porous media (Yang et al., 2014; Li et al., 2024; Peng et al., 2024). D is a quantitative index used to characterize the roughness or complexity of a solid surface. WebFractal Analysis of Shale Pore Structure of Continental Gas Shale Reservoir in the Ordos Basin, NW China Energy & Fuels 2016-05-03 姜福杰姜福杰姜福杰，陈迪，陈健，李倩文，刘莹，邵新荷，胡涛，代进雄 30（6） 113 是 2 Pore characteristic analysis of a lacustrine shale: A case study in the Ordos Basin, NW

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WebMay 27, 2024 · It is important to control and predict the macroscopic properties through pore structure parameters of cement-based materials. Microscopic pore structure of concrete has many characteristics, such as sizes and disordered distribution. It is necessary to use fractal theory to describe the pore structure of concrete. In order to establish the … WebAug 30, 2024 · When quantifying the complexity of shale pores, the fractal dimension is between 2 and 3. The larger the fractal dimension is, the more complex the shale pore structure. The object does not have fractal characteristics if the fractal dimension is less than 2 or greater than 3 (Tang et al., 2024). Results Pore types and characteristics of shale

WebBi-fractal characterizatio n of the pore network of tight sandstone 论文 2024 年作者排序：第一作者；期刊名称： Frontiers in Earth Science；系统收录情况： SCI；发布当年影响因子：2.273； Song-Bi-Fractal Characterization of the Pore N.pdf 3 Dynamic reconstruction of the hydrocarbon generation ...

WebEvaluation of carbonate heterogeneity, closely related to pore geometry and connectivity, is important in oil and gas field production and reservoir prediction 掌桥科研一站式科研服务平台 WebMay 27, 2024 · Further, with the help of mercury intrusion porosimetry (MIP) data and the MATLAB programming, the pore and SEM photos fractal dimensions of AACGS mortar specimens were obtained, respectively, and the relationship between the microscopic fractal dimensions and the macroscopic strength and the structural characteristics of pores was …

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WebDec 14, 2024 · The total pore volume of PH lignite increases rapidly in the pore size range of 0.46–25 nm, the growth rate changes steeply in the pore size range of 25–147.5 nm, and then, it gradually becomes flat and stable, indicating that the cumulative pore volume contribution of PH lignite mainly comes from the pore volumes of ultra-micropores, … how to spell the name evelynWebApr 1, 2024 · DOI: 10.1016/j.energy.2024.127470 Corpus ID: 258047069; Experimental study of effect of liquid nitrogen cold soaking on coal pore structure and fractal characteristics @article{2024ExperimentalSO, title={Experimental study of effect of liquid nitrogen cold soaking on coal pore structure and fractal characteristics}, author={}, journal={Energy}, … how to spell the name elaineWebPore Fractal Characteristics of Hydrate-Bearing Sands and Implications to the Saturated Water Permeability 1 Introduction. Gas hydrates are crystalline compounds composed of water and gas molecules, and they are mainly found in... 2 Theory and Experimental Method. In nature, the cumulative number of ... how to spell the name eileenWebSeveral parameters such as size, shape and orientation of pores have been evaluated. In parallel, the mechanical properties such as fracture toughness and Weibull modulus were directly measured. In order to appreciate the relevance of the use of QIA, the mechanical parameters have also been deduced from the microstructural features, and a comparison … rdw count low meaningWebFractal Characteristics of Coal Pores Based on Classic Geometry and Termodynamic models Acta Geologica Sinica-English Edition 2011 年 6 月 15 日 To better understand the characteristics of coal pores and their influence on coal reservoirs, coal pores in … how to spell the name febeeWebAug 17, 2024 · The present work is closely related to two streams of literature: coal pore structure characteristics and coal fractal characteristics. In the study of Guo et al. (2024), low quality blended coal is used as raw material to prepare gasified-coke under different residence time, and the changes of pore structure and fractal dimension are investigated. rdw countWebApr 8, 2024 · Relationship of Fractal–Multifractal Characteristics and Pore-Throat Structure. Figure 10 shows the relationships between D box and pore-throat parameters of the 11 non-fractured igneous rock samples. For the same type of pores, there was a significant positive correlation between D box and porosity (Fig. 10a). how to spell the name ewan