Results 21 to 30 of about 3,088 (253)
Geofluids, 2021 With low porosity and low permeability, shale reservoirs cannot be mined economically without large-scale hydraulic fracturing operation. However, abundant fracturing fluid will enter the reservoirs during the process of fracture.
Sidong Fang +4 more
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Avalanche dynamics in fluid imbibition near the depinning transition [PDF]
Physical Review E, 2009 We study avalanche dynamics and local activity of forced-flow imbibition fronts in disordered media. We focus on the front dynamics as the mean velocity $\bar{v}$ of the interface is decreased and the pinning state is approached. Scaling arguments allow us to obtain the statistics of avalanche sizes and durations, which become power-law distributed due
Pradas, Marc +2 more
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Journal of Petroleum Exploration and Production Technology, 2020 Understanding spontaneous imbibition helps to determine the fracturing fluid volume and optimize the flowback design. At present, many studies have mainly focused on shale, but few on igneous rocks.
Changlin Zhou +4 more
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Energies, 2022 Tight oil and gas resources are widely distributed and play an important role in the petroleum industry. Due to its nanoscale pore-throat characteristics, the capillary effect is remarkable, and spontaneous imbibition is very beneficial to the ...
Hui Li +5 more
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Forced imbibition in stratified porous media: Fluid dynamics and breakthrough saturation [PDF]
Physical Review Fluids, 2021 Imbibition, the displacement of a nonwetting fluid by a wetting fluid, plays a central role in diverse energy, environmental, and industrial processes. While this process is typically studied in homogeneous porous media with uniform permeabilities, in many cases, the media have multiple parallel strata of different permeabilities.
Nancy B. Lu +2 more
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Water imbibition and water sealing in water-driven gas reservoirs development
Energy Exploration & Exploitation, 2023 To improve the poor understanding of the mechanism of spontaneous water imbibition in water invasion in gas reservoirs and overcome the difficulty in quantifying imbibed water and its impact on reservoir development, a study is carried out based on ...
Xuan Xu +6 more
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Imbibition and Oil Recovery Mechanism of Fracturing Fluids in Tight Sandstone Reservoirs [PDF]
ACS Omega, 2021 The fracturing fluid residing in a reservoir undergoes spontaneous imbibition. Here, to explore the mechanism of fracturing fluid imbibition and oil displacement, experiments on the spontaneous imbibition of fracturing fluid under different influencing factors were conducted on a core sample from the Ordos Basin of the Chang 8 formation.
Hui Gao +6 more
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Energies, 2020 In shale gas formations, imbibition is significant since the tight pore structure causes a strong capillary suction pressure. After hydraulic fracturing, imbibition during the period of shut-in affects the water recovery of flowback.
Zhou Zhou +3 more
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Microscopic imbibition characterization of sandstone reservoirs and theoretical model optimization
Scientific Reports, 2021 Traditional porous media imbibition models deviate from the actual imbibition process in oil and gas reservoirs. Experimental studies on gas–water imbibition in reservoirs were carried out to describe the dynamic profile variation process of wet phase ...
Xuan Xu +7 more
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Fluid imbibition in paper fibers: Precursor front
Physical Review E, 2008 We employ nuclear magnetic resonance imaging to study water penetration in cylindrical blocks of unsized paper prepared under different molding pressures. From the measured kinetics of the imbibition profiles, we determine the dependence of the effective transport diffusivity upon degree of saturation of the pores by the penetrating fluid.
Eduardo N. de Azevedo +4 more
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