发明名称 |
MULTIMODE ACOUSTIC IMAGING IN CASED WELLS |
摘要 |
A well casing is insonified with a first acoustic wave in a first mode that may be any mode of a set including: extensional mode, thickness mode, flexural mode. A first echo is received at a first acoustic transducer for receiving, a first signal is produced and a first measurement is extracted from the first signal. The casing is then insonified with a second acoustic wave in a second mode that may be any mode of the set of modes but is distinct from the first mode. A second echo is received at a selected second acoustic transducer for receiving and a second signal is produced. A second measurement is extracted from the second signal. The zone behind the casing of the well is evaluated from a combination of the first measurement and the second measurement.
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申请公布号 |
CA2534301(C) |
申请公布日期 |
2011.12.20 |
申请号 |
CA20042534301 |
申请日期 |
2004.08.02 |
申请人 |
SCHLUMBERGER CANADA LIMITED |
发明人 |
FROELICH, BENOIT;LE CALVEZ, JEAN-LUC;LEGENDRE, EMMANUEL;ZEROUG, SMAINE |
分类号 |
E21B47/14;E21B47/00;G01V1/46;G01V1/50 |
主分类号 |
E21B47/14 |
代理机构 |
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主权项 |
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地址 |
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