Experimental Confirmation of the Existence of the Lag in the Hydraulic Fracture

Trimonova, Mariia; Zenchenko, E. V.; Zenchenko, Petr; Turuntaev, S. B.; Baryshnikov, N. A.

doi:10.1007/978-981-13-7127-1_182

Cited by 2 publications

(2 citation statements)

References 5 publications

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“…A slight pressure drop may be caused by the influx of pore fluid from the surrounding massif into the expanding fracture. The lag of the fluid front from the fracture tip (a lag) was also observed earlier in the experiments conducted at the described installation [21]. After reaching the maximum fracture opening, its value is at an approximately constant level and begins to decrease after stopping the injection.…”

Section: Main Experimentssupporting

confidence: 74%

Study of the Interaction of a Hydraulic Fracture with a Natural Fracture in Laboratory Experiment Based on Ultrasonic Transmission Monitoring

Zenchenko,

Turuntaev,

Nachev

et al. 2023

Preprint

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This paper presents the results of experiments on the study of a hydraulic fracture interaction with a preliminary created fracture that simulates a natural fracture. A distinctive feature of the conducted experiments is the ability to use an ultrasonic sounding to measure the fracture propagation and opening simultaneously with the fluid pore pressure measurements at the several points of the porous saturated sample. It allows to obtain the pressure distributions at various experiment stages and to establish a relation between the pore pressure distribution and the hydraulic fracture propagation and its interaction with macroscopic natural fracture. The possibilities of active ultrasonic monitoring have been expanded due to preliminary calibration experiments, which make it possible to estimate the fracture opening value by attenuation of ultrasonic pulses. The experiments show that the fracture propagation is limited by the natural fracture. This is caused by the hydraulic fracturing fluid leaks into the natural fracture, so both hydraulic fracture and natural fracture compose united hydraulic system.

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Section: Main Experimentssupporting

confidence: 74%

Study of the Interaction of a Hydraulic Fracture with a Natural Fracture in Laboratory Experiment Based on Ultrasonic Transmission Monitoring

Zenchenko,

Turuntaev,

Nachev

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…The observation of this feature was accidental, to some extent, due to the accidental positions of the fracture and the measuring pressure point. The lag of the fluid front from the fracture tip was also observed earlier in the experiments conducted at the described installation [21,34]. After reaching the maximum fracture opening, its value remained at an approximately constant level, but began to decrease after stopping the injection.…”

Section: Main Experimentssupporting

confidence: 71%

Study of the Interaction of a Hydraulic Fracture with a Natural Fracture in a Laboratory Experiment Based on Ultrasonic Transmission Monitoring

Zenchenko,

Turuntaev,

Nachev

et al. 2024

Energies

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This paper presents the results of experiments on the study of a hydraulic fracture’s interaction with a preexisting fracture. A distinctive feature of the conducted experiments is the ability to use ultrasonic transmitting monitoring to measure the fracture propagation and opening simultaneously with the pore pressure measurements at several points of the porous saturated sample. It allows us to obtain the pressure distributions at various experiment stages and to establish a relation between the pore pressure distribution and hydraulic fracture propagation and its interaction with macroscopic natural fractures. The possibilities of active ultrasonic monitoring have been expanded due to preliminary calibration experiments, which make it possible to estimate the fracture opening via attenuation of ultrasonic pulses. The experiment demonstrated the most complex scenario of fracture interactions when a hydraulic fracture intersected with a natural fracture and the natural fracture in the vicinity of the intersection was also opened. The additional complications arise from fracture arrangement: the hydrofracture was normal with respect to the base plane, while the natural fracture was slanted. This led to gradual growth of the intersection zone as the hydrofracture propagated. The experiments show that the natural fracture limited the fracture’s propagation. This was caused by the hydraulic fracturing fluid leaking into the natural fracture; thus, both the hydraulic fracture and natural fracture compose a united hydraulic system.

show abstract

Experimental Confirmation of the Existence of the Lag in the Hydraulic Fracture

Cited by 2 publications

References 5 publications

Study of the Interaction of a Hydraulic Fracture with a Natural Fracture in Laboratory Experiment Based on Ultrasonic Transmission Monitoring

Study of the Interaction of a Hydraulic Fracture with a Natural Fracture in Laboratory Experiment Based on Ultrasonic Transmission Monitoring

Study of the Interaction of a Hydraulic Fracture with a Natural Fracture in a Laboratory Experiment Based on Ultrasonic Transmission Monitoring

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