发明名称 |
AN EFFICIENT AND ACCURATE PSEUDO 2-D INVERSION SCHEME FOR MULTICOMPONENT INDUCTION LOG DATA |
摘要 |
A fast, efficient and accurate pseudo 2-D inversion scheme (Fig. 4) for resistivity determination of an anisotropic formation (Fig. 3) uses data from a tool (3DEX) (10) comprising three transmitters (101, 103, 105) and three corresponding receivers (107, 109, 111) sampling the formation in a plurality of spatial directions. An initial model (311) of the formation including invasion zones is obtained using a conventional multifrequency and/or multispacing logging tool. A pseudo 2-D inversion scheme combines an accurate full 2-D forward solution (313) of the synthetic responses of the earth model with a 1-D approximation (323) of the sensitivity matrix (317) of the horizontally layered anisotropic background model. The timesaving compared to a regular 2-D inversion scheme can be tremendous.
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申请公布号 |
WO02071099(A1) |
申请公布日期 |
2002.09.12 |
申请号 |
WO2002US05797 |
申请日期 |
2002.02.27 |
申请人 |
BAKER HUGHES INCORPORATED |
发明人 |
KRIEGSHAUSER, BERTHOLD;MCWILLIAMS, STEVEN;FANINI, OTTO, N.;YU, LIMING |
分类号 |
G01V3/28;G01V11/00;(IPC1-7):G01V3/18 |
主分类号 |
G01V3/28 |
代理机构 |
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主权项 |
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地址 |
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