发明名称 |
Method of interpreting induction logs in horizontal wells |
摘要 |
An induction logging tool is used in an inclined borehole for determining properties of subsurface formations formation away from the borehole. Measurements are made at a plurality of transmitter-receiver (T-R) distances. After correction of the data for skin effects and optionally correcting for eddy currents within the borehole, the shallow measurements (those from short T-R spacing or from high frequency data) are inverted to give a model of the near borehole (invaded zone resistivity and diameter) and the resistivity of the formation outside the invaded zone. Using this model, a prediction is made of the data measured by the mid-level and deep sensors (long T-R spacings). A discrepancy between these predicted values and the actual measurements made by the midlevel and deep sensors is indicative of additional layer boundaries in the proximity of the wellbore.
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申请公布号 |
US6308136(B1) |
申请公布日期 |
2001.10.23 |
申请号 |
US20000519029 |
申请日期 |
2000.03.03 |
申请人 |
BAKER HUGHES INCORPORATED |
发明人 |
TABAROVSKY LEONTY A.;RABINOVICH MICHAEL BORIS;BEARD DAVID R. |
分类号 |
G01V3/28;G01V3/38;(IPC1-7):G01V3/38 |
主分类号 |
G01V3/28 |
代理机构 |
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地址 |
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