Shock-induced wave propagation over porous and fractured borehole zones: Theory and experiments

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Borehole waves are strongly affected by adjacent porous zones or by fractures intersecting the borehole. A theoretical description for both porous and fracture zones is possible based on the introduction of an effective borehole fluid bulk modulus, characterizing the wave attenuation via borehole wall impedance. This impedance can be calculated for both porous and fracture zones adjacent to the borehole, thus predicting borehole wave attenuation, transmission, and reflection over such zones. A shock tube setup generates borehole tube waves that are used for porous and fracture zone characterization. A PVC sample is used to introduce and vary fractures in a cylindrical sample. Shock wave experiments show that attenuation in boreholes adjacent to porous zones can be predicted by theory. The transmittivities of a borehole tube wave over 1 and 5 mm fractures are correctly predicted, thus showing the potential of borehole wave experiments for fracture detection and characterization. (C) 2013 Acoustical Society of America.
Originele taal-2Engels
Pagina's (van-tot)4792-4800
TijdschriftJournal of the Acoustical Society of America
Volume134
Nummer van het tijdschrift6
DOI's
StatusGepubliceerd - 2013

Vingerafdruk

boreholes
wave propagation
shock
wave attenuation
Waves
Experiment
impedance
tubes
shock tubes
bulk modulus
shock waves
attenuation
Attenuation
fluids

Citeer dit

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abstract = "Borehole waves are strongly affected by adjacent porous zones or by fractures intersecting the borehole. A theoretical description for both porous and fracture zones is possible based on the introduction of an effective borehole fluid bulk modulus, characterizing the wave attenuation via borehole wall impedance. This impedance can be calculated for both porous and fracture zones adjacent to the borehole, thus predicting borehole wave attenuation, transmission, and reflection over such zones. A shock tube setup generates borehole tube waves that are used for porous and fracture zone characterization. A PVC sample is used to introduce and vary fractures in a cylindrical sample. Shock wave experiments show that attenuation in boreholes adjacent to porous zones can be predicted by theory. The transmittivities of a borehole tube wave over 1 and 5 mm fractures are correctly predicted, thus showing the potential of borehole wave experiments for fracture detection and characterization. (C) 2013 Acoustical Society of America.",
author = "H. Fan and D.M.J. Smeulders",
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Shock-induced wave propagation over porous and fractured borehole zones: Theory and experiments. / Fan, H.; Smeulders, D.M.J.

In: Journal of the Acoustical Society of America, Vol. 134, Nr. 6, 2013, blz. 4792-4800.

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

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AB - Borehole waves are strongly affected by adjacent porous zones or by fractures intersecting the borehole. A theoretical description for both porous and fracture zones is possible based on the introduction of an effective borehole fluid bulk modulus, characterizing the wave attenuation via borehole wall impedance. This impedance can be calculated for both porous and fracture zones adjacent to the borehole, thus predicting borehole wave attenuation, transmission, and reflection over such zones. A shock tube setup generates borehole tube waves that are used for porous and fracture zone characterization. A PVC sample is used to introduce and vary fractures in a cylindrical sample. Shock wave experiments show that attenuation in boreholes adjacent to porous zones can be predicted by theory. The transmittivities of a borehole tube wave over 1 and 5 mm fractures are correctly predicted, thus showing the potential of borehole wave experiments for fracture detection and characterization. (C) 2013 Acoustical Society of America.

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