Shock-induced borehole waves and fracture effects

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

We perform wave experiments using a vertical shock tube setup. Shock waves are generated by the rupture of a thin membrane. In the test section the incident pressure waves generate borehole-guided waves along water-saturated samples. The tube is equipped with side wall gages and a mobile pressure probe, so that the attenuation and reflection of the wave can be measured. The computation for a single horizontal fracture intersecting a vertical borehole gives a quantitative prediction of reflection and transmission of borehole-guided waves. Three different fracture apertures are used for the calculation. Fracture aperture significantly affects both reflection and transmission coefficients. Large fractures increase reflectivity and decrease transmissivity. In the experiment, we found that both pressures above and below the fracture are influenced by the fracture aperture indeed, thus indicating the potential for fracture detection by borehole waves
LanguageEnglish
Pages263-270
JournalTransport in Porous Media
Volume93
Issue number2
DOIs
StatePublished - 2012

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Boreholes
Guided electromagnetic wave propagation
Shock tubes
Wave transmission
Shock waves
Gages
Experiments
Membranes
Water

Cite this

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abstract = "We perform wave experiments using a vertical shock tube setup. Shock waves are generated by the rupture of a thin membrane. In the test section the incident pressure waves generate borehole-guided waves along water-saturated samples. The tube is equipped with side wall gages and a mobile pressure probe, so that the attenuation and reflection of the wave can be measured. The computation for a single horizontal fracture intersecting a vertical borehole gives a quantitative prediction of reflection and transmission of borehole-guided waves. Three different fracture apertures are used for the calculation. Fracture aperture significantly affects both reflection and transmission coefficients. Large fractures increase reflectivity and decrease transmissivity. In the experiment, we found that both pressures above and below the fracture are influenced by the fracture aperture indeed, thus indicating the potential for fracture detection by borehole waves",
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Shock-induced borehole waves and fracture effects. / Fan, H.; Smeulders, D.M.J.

In: Transport in Porous Media, Vol. 93, No. 2, 2012, p. 263-270.

Research output: Contribution to journalArticleAcademicpeer-review

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T1 - Shock-induced borehole waves and fracture effects

AU - Fan,H.

AU - Smeulders,D.M.J.

PY - 2012

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AB - We perform wave experiments using a vertical shock tube setup. Shock waves are generated by the rupture of a thin membrane. In the test section the incident pressure waves generate borehole-guided waves along water-saturated samples. The tube is equipped with side wall gages and a mobile pressure probe, so that the attenuation and reflection of the wave can be measured. The computation for a single horizontal fracture intersecting a vertical borehole gives a quantitative prediction of reflection and transmission of borehole-guided waves. Three different fracture apertures are used for the calculation. Fracture aperture significantly affects both reflection and transmission coefficients. Large fractures increase reflectivity and decrease transmissivity. In the experiment, we found that both pressures above and below the fracture are influenced by the fracture aperture indeed, thus indicating the potential for fracture detection by borehole waves

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DO - 10.1007/s11242-012-9963-6

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SP - 263

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JO - Transport in Porous Media

T2 - Transport in Porous Media

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