Effect of Wetting Hysteresis on Fluid Flow in Shale Oil Reservoirs

Gao, Yin; Wu, Keliu; Chen, Zhangxin; Zhou, Taofa; Li, Jing; Feng, Dong; Gao, Yanling; Tian, Weibing

doi:10.1021/acs.energyfuels.1c01697

Cited by 10 publications

(5 citation statements)

References 29 publications

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“…Therefore, the wall surface should be smoothened in the production process (e.g., injection of an acidic dissolved solution [Song et al, 2014]) to ensure the smoothness of the migration space. Besides, the capillary pressure model (Gao et al, 2021) where the dynamic contact angle replaces the static contact angle can better reflect the flow process in the shear structure.…”

Section: Experimental Results and Analysismentioning

confidence: 99%

Visualizing experimental investigation on gas–liquid replacements in a microcleat model using the reconstruction method

Chen

Zhang

Yin

et al. 2023

Deep Underground Science and Engineering

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Cleats are the main channels for fluid transport in coal reservoirs. However, the microscale flow characteristics of both gas and water phases in primary cleats have not been fully studied as yet. Accordingly, the local morphological features of the cleat were determined using image processing technology and a transparent cleat structure model was constructed by microfluidic lithography using the multiphase fluid visualization test system. Besides, the effect of microchannel tortuosity characteristics on two‐phase flow was analyzed in this study. The results are as follows: (1) The local width of the original cleat structure of coal was strongly nonhomogeneous. The cleats showed contraction and expansion in the horizontal direction and undulating characteristics in the vertical direction. (2) The transient flow velocity fluctuated due to the structural characteristics of the primary cleat. The water‐driven gas interface showed concave and convex instability during flow, whereas the gas‐driven water interface presented a relatively stable concave surface. (3) The meniscus advanced in a symmetrical pattern in the flat channel, and the flow stagnated due to the influence of undulation points in a partially curved channel. The flow would continue only when the meniscus surface bypassed the stagnation point and reached a new equilibrium position. (4) Enhanced shearing at the gas–liquid interface increased the gas‐injection pressure, which in turn increased residual liquids in wall grooves and liquid films on the wall surface.

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Section: Experimental Results and Analysismentioning

confidence: 99%

Visualizing experimental investigation on gas–liquid replacements in a microcleat model using the reconstruction method

Chen

Zhang

Yin

et al. 2023

Deep Underground Science and Engineering

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“…The experimental patterns of pressure transfer to shale from five types and three concentrations of salt solutions were tested using the PTE pressure transfer device. Experimental data were recorded every 1 min [31,32].…”

Section: Experimental Methods Of Chemical Inhibitionmentioning

confidence: 99%

Experimental Water Activity Suppression and Numerical Simulation of Shale Pore Blocking

Shan,

Zhao,

Liu

et al. 2023

Processes

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The nanoscale pores in shale oil and gas are often filled with external nanomaterials to enhance wellbore stability and improve energy production. And there has been considerable research on discrete element blocking models and simulations related to nanoparticles. In this paper, the pressure transmission experimental platform is used to systematically study the influence law of different water activity salt solutions on shale permeability and borehole stability. In addition, the force model of the particles in the pore space is reconstructed to study the blocking law of the particle parameters and fluid physical properties on the shale pore space based on the discrete element hydrodynamic model. However, the migration and sealing patterns of nanomaterials in shale pores are unknown, as are the effects of changes in particle parameters on nanoscale sealing. The results show that: (1) The salt solution adopts a formate system, and the salt solution is most capable of blocking the pressure transmission in the shale pores when the water activity is 0.092. The drilling fluid does not easily penetrate into the shale pore space, and it is more capable of maintaining the stability of the shale wellbore. (2) For the physical blocking numerical simulation, the nanoparticle concentration is the most critical factor affecting the shale pore blocking efficiency. Particle size has a large impact on the blocking efficiency of shale pores. The particle diameter increases by 30% and the pore-blocking efficiency increases by 13% when the maximum particle size is smaller than the pore exit. (3) Particle density has a small effect on the final sealing effect of pore space. The pore-plugging efficiency is only increased by 4% as the particle density is increased by 60%. (4) Fluid viscosity has a significant effect on shale pore plugging. The increase in viscosity at a nanoparticle concentration of 1 wt% significantly improves the sealing effectiveness, specifically, the sealing efficiency of the 5 mPa-s nanoparticle solution is 16% higher than that of the 1 mPa-s nanoparticle solution. Finally, we present a technical basis for the selection of a water-based drilling fluid system for long horizontal shale gas drilling.

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“…Although there is supportive theoretical and experimental evidence for both reaction pathways, the prevailing consensus currently favors the first reaction path as the main view. [ 190 ]…”

Section: Applicationsmentioning

confidence: 99%

Evolution of Metal Tellurides for Energy Storage/Conversion: From Synthesis to Applications

Ahmad,

Nawaz,

Hussain

et al. 2024

Small

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Metal telluride (MTe)‐based nanomaterials have emerged as a potential alternative for efficient, highly conductive, robust, and durable electrodes in energy storage/conversion applications. Significant progress in the material development of MTe‐based electrodes is well‐sought, from the synthesis of its nanostructures, integration of MTes with supporting materials, synthesis of their hybrid morphologies, and their implications in energy storage/conversion systems. Herein, an extensive exploration of the recent advancements and progress in MTes‐based nanomaterials is reviewed. This review emphasizes elucidating the fundamental properties of MTes and providing a systematic compilation of its wet and dry synthesis methods. The applications of MTes are extensively summarized and discussed, particularly, in energy storage and conversion systems including batteries (Li‐ion, Zn‐ion, Li‐S, Na‐ion, K‐ion), supercapacitor, hydrogen evolution reaction (HER), oxygen evolution reaction (OER), oxygen reduction reaction (ORR), and CO2 reduction. The review also emphasizes the future prospects and urgent challenges to be addressed in the development of MTes, providing knowledge for researchers in utilizing MTes in energy storage and conversion technologies.

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Effect of Wetting Hysteresis on Fluid Flow in Shale Oil Reservoirs

Cited by 10 publications

References 29 publications

Visualizing experimental investigation on gas–liquid replacements in a microcleat model using the reconstruction method

Visualizing experimental investigation on gas–liquid replacements in a microcleat model using the reconstruction method

Experimental Water Activity Suppression and Numerical Simulation of Shale Pore Blocking

Evolution of Metal Tellurides for Energy Storage/Conversion: From Synthesis to Applications

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