发明名称 |
Method and apparatus for logging foam cement in cased boreholes |
摘要 |
An acoustic logging system that measures distribution of foam cement and other material in a casing-borehole annulus. The distribution is preferably displayed as map. A borehole tool utilizes at least one acoustic transducer with a known frequency response and mounted on a rotating scanning head that is pointed essentially perpendicular to the borehole wall. The response of the transducer is used to measure an original impedance map of material within the borehole-casing annulus. A fast Fourier transform is used to generate a FFT map from the data comprising the original impedance map. The original impedance map is then combined with the FFT map using logic rules to obtain a final impedance map that is indicative of material within the casing-borehole annulus.
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申请公布号 |
US7885142(B2) |
申请公布日期 |
2011.02.08 |
申请号 |
US20070866221 |
申请日期 |
2007.10.02 |
申请人 |
PRECISION ENERGY SERVICES, INC. |
发明人 |
TELLO LUCIO N.;MOLDER SARAH D. |
分类号 |
G01V1/00 |
主分类号 |
G01V1/00 |
代理机构 |
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代理人 |
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