Acoustics – Geophysical or subsurface exploration – Seismic source and detector
Reexamination Certificate
2007-05-01
2007-05-01
San Martin, Edgardo (Department: 2837)
Acoustics
Geophysical or subsurface exploration
Seismic source and detector
C181S113000, C181S122000, C181S207000
Reexamination Certificate
active
10882915
ABSTRACT:
An acoustic attenuator includes a housing having an inner side surface which defines an interior chamber and at least one dampening member both physically and acoustically coupled to the housing and projecting into the interior chamber. Acoustic energy propagating within the housing is deflected into the dampening members for acoustically dispersal within the interior chamber. In various aspects thereof, the dampening members may include one or a group of two or more generally cylindrical sleeves having one end both physically and acoustically coupled to the housing and a second end projecting into the interior chamber. Preferably, when a group of two or more cylindrical sleeves are employed, the sleeves are nested within one another. The dampening members may further include a second, oppositely disposed, group of two or more acoustic attenuators nested within one another and interdigitated with the first group of cylindrical sleeves.
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Chang, Dworak, Hsu, Lau, Masson, Mayes, Mcdaniel, Randall, Kostek, Plona “Sonic Compressional Measurements While Drilling”; SPWLA 35th Annual Logging Symp., Jun. 19-22, 1994.
Gardner Wallace R.
Kyle Donald G.
Linyaev Eugene J.
Shah Vimal V.
Conley & Rose, P.C.
Halliburton Energy Service,s Inc.
Martin Edgardo San
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