3D Modeling of Hydraulic Fracturing in Tight Gas Reservoirs by Using of FLAC3D and Validation through Comparison with FracPro

Zhou, Lei; Guo, Jian Chun

doi:10.4028/www.scientific.net/amr.524-527.1293

Cited by 3 publications

(1 citation statement)

References 2 publications

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“…Consequently, DFN models can hide important fracture features. To achieve the goal, the FLAC3D model was chosen, which can simulate an irreversible behavior of the rock mass stimulated by HF [18,19]. FLAC3D simulates flow in parallel with the mechanical modeling, in order to capture the effects of fluid/solid interaction.…”

Section: Mathematical Representation and Description Of Using The Airflow Energymentioning

confidence: 99%

Investigation of the dissipative structures following microseismic diffusion during hydraulic fracturing of methane-hydrate-bearing sand

Nazimko¹,

Pidgurna

Kusen³

2021

E3S Web of Conf.

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Hydraulic fracturing is a prospective technology for methane hydrate deposit exploitation. The evolution of hydraulically stimulated fractures around the point of liquid injection is simulated. For this purpose, the FLAC3D computer model is used because of its explicit calculation cycle that imitates real physics, prevents numerical instability, and reproduces a realistic path during simulation of the nonlinear rock massif behavior. The results of the simulation provide for new findings, namely, the spatial asymmetry and synchronism violation, spatial deviation, discontinuity, and recurrence during microseismic diffusion, which follow the process of hydraulic fracturing. In addition, dissipative structures were developed due to entropy production, since gas hydrate strata are an open thermodynamic system, which transforms and dissipates the energy of the injected liquid. The process of dissipative structure evolution should be controlled to enhance the gas yield from the hydrates.

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Section: Mathematical Representation and Description Of Using The Airflow Energymentioning

confidence: 99%

Investigation of the dissipative structures following microseismic diffusion during hydraulic fracturing of methane-hydrate-bearing sand

Nazimko¹,

Pidgurna

Kusen³

2021

E3S Web of Conf.

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Numerical simulation of microseismicity induced by hydro-fracturing and its interpretation in terms of dissipative structures

Nazimko¹,

Zacharova²,

Pidgurna³

2021

Arab J Geosci

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Experimental and Simulation Studies of Energized Fracturing Fluid Efficiency in Tight Gas Formations

Wilk

2019

Energies

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The use of water-based fracturing fluids during fracturing treatment can be a problem in water-sensitive formations due to the permeability damage hazard caused by clay minerals swelling. The article includes laboratory tests, analyses and simulations for nitrogen foamed fracturing fluids. The rheology and filtration coefficients of foamed fracturing fluids were examined and compared to the properties of conventional water-based fracturing fluid. Laboratory results provided the input for numerical simulation of the fractures geometry for water-based fracturing fluids and 50% N2 foamed fluids, with addition of natural, fast hydrating guar gum. The results show that the foamed fluids were able to create shorter and thinner fractures compared to the fractures induced by the non-foamed fluid. The simulation proved that the concentration of proppant in the fracture and its conductivity are similar or slightly higher when using the foamed fluid. The foamed fluids, when injected to the reservoir, provide additional energy that allows for more effective flowback, and maintain the proper fracture geometry and proppant placing. The results of laboratory work in combination with the 3D simulation showed that the foamed fluids have suitable viscosity which allows opening the fracture, and transport the proppant into the fracture, providing successful fracturing operation. The analysis of laboratory data and the performed computer simulations indicated that fracturing fluids foamed by nitrogen are a good alternative to non-foamed fluids. The N2-foamed fluids exhibit good rheological parameters and proppant-carrying capacity. Simulated fracture of water-based fracturing fluid is slightly longer and higher compared to foamed fluid. At the same time, when using a fluid with a gas additive, the water content in fracturing fluid is reduced which means the minimization of the negative results of the clay minerals swelling.

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3D Modeling of Hydraulic Fracturing in Tight Gas Reservoirs by Using of FLAC3D and Validation through Comparison with FracPro

Cited by 3 publications

References 2 publications

Investigation of the dissipative structures following microseismic diffusion during hydraulic fracturing of methane-hydrate-bearing sand

Investigation of the dissipative structures following microseismic diffusion during hydraulic fracturing of methane-hydrate-bearing sand

Numerical simulation of microseismicity induced by hydro-fracturing and its interpretation in terms of dissipative structures

Experimental and Simulation Studies of Energized Fracturing Fluid Efficiency in Tight Gas Formations

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