发明名称 |
RESISTIVITY LOGGING SYSTEMS AND METHODS EMPLOYING RATIO SIGNAL SET FOR INVERSION |
摘要 |
Electromagnetic resistivity logging systems and methods yielding formation anisotropy and dip from a signal set that closely approximates the response of a idealized tool. One illustrative method embodiment derives from an azimuthally-sensitive tool's measurements a full set of orthogonal direct couplings (Vxx, Vyy, Vzz) and a cross-coupling sum (Vxz+Vzx) or (Vyz+Vzy). These values are converted into a signal set as a function of borehole position, the set including: a first signal representing a ratio between Vzz coupling components at different spacing distances, a second signal representing a ratio between Vxx and Vzz coupling components, a third signal representing a ratio between Vyy and Vzz coupling components, a fourth signal representing a ratio between Vxx and Vyy coupling components, and a fifth signal representing a ratio between a cross-coupling sum and a sum of the direct couplings. From this signal set, formation parameters can be accurately determined by inversion. |
申请公布号 |
WO2014003701(A1) |
申请公布日期 |
2014.01.03 |
申请号 |
WO2012US43937 |
申请日期 |
2012.06.25 |
申请人 |
HALLIBURTON ENERGY SERVICES, INC.;WU, HSU-HSIANG;BITTAR, MICHAEL, S.;DONDERICI, BURKAY |
发明人 |
WU, HSU-HSIANG;BITTAR, MICHAEL, S.;DONDERICI, BURKAY |
分类号 |
G01V3/38 |
主分类号 |
G01V3/38 |
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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