发明名称 |
Method and apparatus for generating acoustic signals for LWD shear velocity measurement |
摘要 |
An acoustic logging apparatus comprises a drill collar conveyed on a drilling tubular in a borehole within a formation. At least one transmitter is disposed in the drill collar. The transmitter includes at least one magnetostrictive actuator cooperatively coupled by a flexure ring to a piston for converting a magnetostrictive actuator displacement into a related piston displacement for transmitting an acoustic signal in the formation.
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申请公布号 |
US6909666(B2) |
申请公布日期 |
2005.06.21 |
申请号 |
US20040763740 |
申请日期 |
2004.01.24 |
申请人 |
BAKER HUGHES INCORPORATED |
发明人 |
DUBINSKY VLADIMIR;LEGGETT, III JAMES V.;PATTERSON DOUGLAS J.;BEIMGRABEN HERBERT W.;SLAUGHTER JULIE C.;HANSEN TOBY;CANNY DUANE E. |
分类号 |
E21B47/14;E02D1/00;G01V1/00;G01V1/40;G01V1/44;(IPC1-7):H04H9/00 |
主分类号 |
E21B47/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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