Pore fractal characteristics

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, ... 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

Pore structure, fractal characteristics and permeability prediction of ...

WebApr 5, 2024 · To disclose the pore distribution characteristics of different lithofacies lacustrine shales, ten samples collected from the Shahejie Formation, Dongying Sag, Bohai Bay Basin, China, were examined using argon ion beam milling–scanning electron microscopy (SEM). A quantitative method was adopted to characterize shale pore … 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 … dheas elecsys https://tgscorp.net

Filling characteristics of the micropores in coals with different ...

Webpores showed typical three-stage fractal characteristics at boundary points of 1 nm and 9 nm (7 nm of coal samples from Zhaozhuang Colliery), and the fractal dimension with 1–9 nm (or 1–7 nm), as being significantly larger than those measured outside the given ranges. Pores in samples from WebApr 20, 2024 · In this study, various testing methods were used to analyze the mineral characteristics, reservoir storage types and pore-throat network characteristics of the Permian tight sandstone in the Upper Paleozoic of the Ordos Basin. A fractal method was applied to evaluate the reservoirs’ microscopic heterogeneity. According to the results, the … 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. cigarettes manufacturers in united states

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

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Pore fractal characteristics

Filling characteristics of the micropores in coals with different ...

WebApr 12, 2024 · Abstract Wetting and drying (WD) cycles have a strong influence on the structure of soil, especially on the pore distribution, which can significantly affect soil quality and crop growth. Most studies have conducted the controlled cycles effects on soil pores at the laboratory. However, the effects of natural wetting and drying cycles (NWD) on the … WebPore 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, ...

Pore fractal characteristics

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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 … 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

WebMar 28, 2024 · The evaluation of pore characteristics in lacustrine shales is of significance for shale oil and ... WebAug 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.

WebNov 15, 2024 · Fractal analysis was performed on carbonate core plug samples from the Ordovician Majiagou carbonate reservoirs in the Ordos Basin using mercury intrusion capillary pressure (MICP), nuclear magnetic resonance (NMR), and the x-ray computed tomography (CT) measurements to improve our understanding of the pore structure … WebApr 14, 2024 · On the other hand, the pore size is concentrated in the range of 0.1–1 μm in tight oil reservoirs, and the pore characteristics of such reservoirs show obvious micro-nano scale effects. 7 7. T. M. Koper Marc, “ Structure sensitivity and nanoscale effects in electrocatalysis,” Nanoscale 3(5), 2054– 2073 (2011).

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 …

WebChuck Speicher has been a visionary leader in every endeavor he has chosen to pursue over a career that spans more than 3 decades. First in the wireless industry where his accomplishments lead an ... dheas dehydroepiandrosterone sulphateWebWith 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 dheas elevated meansWebMar 2, 2024 · The contributions of key pore geometry parameters, including the maximum pore diameter, minimum pore diameter, porosity, and fractal dimensions, to the initial permeability were investigated. A numerical analysis showed that the influence of fractal dimension on the permeability is finally reflected in the influence of pore structure … dheas and fertilityWebFractal 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 cigarette smell out of clothesWebThe 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 ... cigarettes lowest in nicotineWebThe geometry parameters of roundness and shape index were adopted to study the pore morphology characteristics, and the relationship between geometry parameters and pore fractal dimension of the RAS were established by regression analysis method. cigarette smell on clothesWebSep 15, 2014 · CT X-ray was used to image surface features of biofilm and permeability pathways within the micron-scale pore networks of an oil-reservoir sandstone core (depth 4,796.2 ft), Eutaw Formation ... dheas dehydroepiandrosterone sulfate