发明名称 |
Electromagnetic Surveying |
摘要 |
A method of analysing results from an electromagnetic survey of an area that is thought or known to contain a subterranean resistive or conductive body within a background strata configuration is described. The method comprises providing a set of electromagnetic field data obtained using at least one electromagnetic receiver and at least one electromagnetic source for a range of source-receiver separations, e.g. providing conventional controlled-source electromagnetic survey data. A subset of the electromagnetic field data is identified that comprises data obtained for source-receiver separations greater than a selected threshold offset. The threshold offset is chosen so that data beyond this offset are characteristic of magnetotelluric data. Thus the subset of data is then processed in accordance with a first technique to obtain information on the background strata configuration. Other electromagnetic field data obtained for source-receiver separations less than the threshold offset may then be processed in accordance with a second technique to obtain information on any subterranean resistive or conductive body within the background strata configuration.
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申请公布号 |
US2009082970(A1) |
申请公布日期 |
2009.03.26 |
申请号 |
US20070858239 |
申请日期 |
2007.09.20 |
申请人 |
OHM LTD |
发明人 |
ANDREIS DAVID;MACGREGOR LUCY;GOLUBEV NIKOLAY |
分类号 |
G01V3/38;G01V3/12;G06F9/455;G06F19/00 |
主分类号 |
G01V3/38 |
代理机构 |
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