发明名称 |
INTERFEROMETRIC PROCESSING METHOD TO IDENTIFY BED BOUNDARIES |
摘要 |
A method and apparatus are disclosed for identifying boundaries between thin beds having different resistivities. In one embodiment, the method includes (a) transmitting an oscillatory signal from a first transmitter; (b) determining a first phase difference between signals induced in two receivers by the oscillatory signal from the first transmitter; (c) transmitting an oscillatory signal from a second transmitter; (d) determining a second phase difference between signals induced in the two receivers by the oscillatory signal from the second transmitter; and (e) calculating a interferometric difference between the first and second phase differences. When the transmitters are symmetrically located with respect to the receivers, the interferometric difference exhibits a maximum or minimum value near the boundary location. This low-complexity method provides good boundary detection results when the bed thickness is larger than the transmitter-receiver spacing. In a second method embodiment, the interferometric difference is calculated from the logarithm of the measured attenuation. |
申请公布号 |
EP1242963(A4) |
申请公布日期 |
2012.11.28 |
申请号 |
EP20000971069 |
申请日期 |
2000.08.29 |
申请人 |
HALLIBURTON ENERGY SERVICES, INC. |
发明人 |
HAGIWARA, TERUHIKO |
分类号 |
G06F19/00;G01V3/18;G01V3/30 |
主分类号 |
G06F19/00 |
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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