发明名称 |
Closed-loop downhole resonant source |
摘要 |
An apparatus for generating seismic body waves in a hydrocarbon reservoir includes a closed-loop borehole source having a resonant cavity for generating resonant energy, a drive source and a control unit. The drive source injects pressure pulses to the resonant cavity at a predetermined or selectable pressure and frequency. The fluid circulates between the cavity and the drive source in a closed-loop fashion. In another embodiment, the borehole source utilizes a smart or controllable material that is responsive to an applied excitation field. The cavity includes an excitation coil for providing an excitation field that changes a material property of the smart fluid. The control unit is programmed to adjust operating parameters to produce seismic waves having a selected frequency and amplitude. In one embodiment, a control unit adjusts operating parameters in response to measured parameters of interest or surface commands.
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申请公布号 |
US7823689(B2) |
申请公布日期 |
2010.11.02 |
申请号 |
US20030643030 |
申请日期 |
2003.08.18 |
申请人 |
BAKER HUGHES INCORPORATED |
发明人 |
ARONSTAM PETER S.;WATKINS LARRY;FINCHER ROGER;GOODSON, JR. JAMES E.;CARMODY MICHAEL |
分类号 |
E21B23/04;E21B33/1295;E21B34/00;F15B21/06;G01V1/133;G01V1/42 |
主分类号 |
E21B23/04 |
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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