3D Printing of natural sandstone at pore scale and comparative analysis on micro-structure and single/two-phase flow properties

Song, Rui; Wang, Yao; Tang, Yu; Peng, Jinrong; Li, Jianjun; Yang, Chunhe

doi:10.1016/j.energy.2022.125226

Cited by 34 publications

(14 citation statements)

References 59 publications

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“…According to the Cambridge Energy Information Agency, the annual production of tight oil in the United States will reach 160 million tons in 2025 and 300 million tons in 2030, accounting for one-third of the total domestic oil production (Figure ). − …”

Section: Current Status Of Tight Oil Development In the United Statesmentioning

confidence: 99%

“…In 2011, directional wells in the United States produced more oil than gas for the first time, and the number of horizontal wells exceeded that of vertical wells. − In 2012, the daily production of tight oil in the United States was 280000 tons. According to the Cambridge Energy Information Agency, the annual production of tight oil in the United States will reach 160 million tons in 2025 and 300 million tons in 2030, accounting for one-third of the total domestic oil production (Figure ).…”

Section: Current Status Of Tight Oil Development In the United Statesmentioning

confidence: 99%

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Review of the Development Status and Technology of Tight Oil: Advances and Outlook

Liu

2023

Energy Fuels

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Tight sandstone and shale oil reservoirs are one of the most promising and realistic important oil exploration fields in the 21st century. The research on the development technology of tight sandstone and shale oil reservoirs has important theoretical and practical significance for the exploration and development of tight sandstone and shale oil reservoirs in China. First, this article introduces the distribution of tight oil in the world and calculates the recoverable reserves of tight oil technology worldwide. The review also introduces the current status of tight oil exploration and development in major countries such as the United States, Canada, and China, including the distribution of tight oil resources, the main parameters of tight oil basins, and tight oil production. Second, it analyzes the current development status of tight oil in the United States, summarizes the four main factors that led to the success of tight oil exploration and development in the United States, and points out the impact of the successful development of tight oil in the United States on the global oil supply and demand relationship. Third, in the review of the main development technologies for tight oil, the current status, application, and progress of the main development technologies for tight oil are summarized and analyzed, including horizontal well drilling, fracturing and transformation technology, microscale seismic diagnosis, gas injection, and other technologies. Finally, the development examples of tight oil such as the Bakun shale in the United States are analyzed, and the application effects and experiences of horizontal well volume fracturing in regions such as the United States are summarized.

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Section: Current Status Of Tight Oil Development In the United Statesmentioning

confidence: 99%

Section: Current Status Of Tight Oil Development In the United Statesmentioning

confidence: 99%

Review of the Development Status and Technology of Tight Oil: Advances and Outlook

Liu

2023

Energy Fuels

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“…In order to quantitatively describe their relationship with CBM flow characteristics, the complex fracture networks in natural coal seams were simplified for subsequent Frontiers in Earth Science frontiersin.org modeling analysis. In the past, researchers often used CT imaging to reconstruct the network model (Song et al, 2020;Song et al, 2021;Song et al, 2022) present a novel pore scale modeling on dissociation and transportation mechanism of MH in porous sediments. But the reconstructed model was too complex and not targeted.…”

Section: Reconstruction Of the Geometric Model Of Bifurcation Fractur...mentioning

confidence: 99%

Study on coalbed methane flow characteristics based on fractal bifurcation fracture network model

Jiang

Xia²,

Peng³

et al. 2023

Front. Earth Sci.

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The geometric structure and distribution of the fracture network significantly impact the coalbed methane flow characteristics. The indoor optical microscope test is utilized to analyze the distribution and structural characteristics of natural fractures in coal. The results indicate that the fracture network in coal consists primarily of irregular bifurcated fractures, but the influence of the bifurcation fracture network’s structural characteristics on permeability remains unclear. Therefore, the fracture network geometric structure characteristic parameters are considered in accordance with the fractal theory, and the analytical formula of the bifurcation fracture network permeability is established. Meanwhile, the bifurcation fracture network geometric model with varied structural parameters is reconstructed using the pixel probability decomposition algorithm. Finally, the influence of the key parameters of the reconstructed bifurcation fracture network on the coal seam permeability is analyzed through numerical simulation. The results indicate that the permeability of the bifurcated fracture network increases with the increase of fracture porosity φf, aperture ratio χ, and proportionality coefficient η, and decreases with the increase of tortuosity fractal dimension DT, bifurcation angle θ, fractal dimension Df, and bifurcation level n. Among them, fracture porosity and proportionality coefficient have the greatest influence on permeability, followed by tortuosity fractal dimension, aperture ratio.

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“…Both tight sandstone gas and shale gas belong to low-porosity and low-permeability gas reservoirs . At present, it is generally necessary to implement industrial exploitation by means of reservoir reconstruction measures such as large-scale volume fracturing or multistage fracturing of horizontal wells. , Therefore, it is of great engineering significance to explore the percolation law of fractured horizontal wells in tight gas reservoirs for efficient development of tight gas reservoirs. , Lymberopoulos and Payatakes, Vogel and Roth, Tomutsa and Radmilovic, Tomutsa and Silin, and Tomuta et al established a digital core model by using the sequence imaging method, X-CT, FIB-SEM, etc. and analyzed the pore structure of the core.…”

Section: Introductionmentioning

confidence: 99%

Cross-Scale Seepage Characteristics of Fractured Horizontal Wells in Tight Gas Reservoirs

Li,

Zhou,

Liu

et al. 2023

ACS Omega

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Tight gas reservoirs are rich in microscale pores and fractures. The effect of microscale gas seepage in tight sandstone matrix on gas well productivity cannot be ignored. At present, the effect of microscale gas flow on the well testing model of fractured horizontal wells has not been systematically studied. In this paper, first, the coupling influence mechanism of "multicomponent gas effect−fracture geometry characteristics" is expounded, second, a seepage model coupling the flow in the fracture and the flow in the gas reservoir is established on the fracture wall surface, and third, an unsteady pressure analysis model for fractured horizontal wells in tight gas reservoirs is established. Results show that (a) when the microscale fracture is at a quite small level, the Knudsen diffusion plays a dominant role at a wide range of pressures; (b) the mass transfer rate of multicomponent shale gas through macrofractures increases with increasing CO 2 fraction; (c) the unsteady flow process is divided into six stages in turn: microscale diffusion stage, linear flow stage in fractures, linear flow stage between fractures, early radial flow stage in gas reservoirs, linear flow stage in gas reservoirs, and late radial flow stage in gas reservoirs; and (d) with an increase of dimensionless bottom-hole storage coefficient, the second and third stages of flow are gradually covered up.

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3D Printing of natural sandstone at pore scale and comparative analysis on micro-structure and single/two-phase flow properties

Cited by 34 publications

References 59 publications

Review of the Development Status and Technology of Tight Oil: Advances and Outlook

Review of the Development Status and Technology of Tight Oil: Advances and Outlook

Study on coalbed methane flow characteristics based on fractal bifurcation fracture network model

Cross-Scale Seepage Characteristics of Fractured Horizontal Wells in Tight Gas Reservoirs

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