发明名称 |
DISTRIBUTED SENSORS TO MEASURE CEMENT STATE |
摘要 |
A system for determining a curing state for cement disposed in a borehole penetrating the earth that includes a transceiver that includes a transmitting coil and that is configured to provide an input signal to the coil that sweeps through a frequency range and to measure the magnitude of the voltage across the coil. The system also includes a plurality of sensor nodes disposed in the concrete. The sensor nodes include a receiving coil and a capacitor coupled to the receiving coil to form a receiving circuit and that has a capacitance that changes as one of pressure or strain in the cement changes. |
申请公布号 |
WO2013003152(A3) |
申请公布日期 |
2013.02.28 |
申请号 |
WO2012US43322 |
申请日期 |
2012.06.20 |
申请人 |
BAKER HUGHES INCORPORATED;KUMAR, SUNIL;LEHR, JOERG |
发明人 |
KUMAR, SUNIL;LEHR, JOERG |
分类号 |
E21B47/09;E21B47/13 |
主分类号 |
E21B47/09 |
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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