发明名称 |
ELECTROMAGNETIC FIELDS USING A CONDUCTIVE CASING |
摘要 |
A method for efficiently calculating a subsurface distribution of electrical resistivity or conductivity generated by an electromagnetic (EM) source is provided wherein a significant fraction of the electric current produced by a source flows along a casing of a borehole. The method is comprised of two steps: calculating EM fields produced by the casing in the background lithology; and calculating EM fields caused by a resistivity anomaly in the presence of an EM field produced by the casing within a subsurface or survey model that does not include the casing. |
申请公布号 |
WO2015127211(A1) |
申请公布日期 |
2015.08.27 |
申请号 |
WO2015US16831 |
申请日期 |
2015.02.20 |
申请人 |
GROUNDMETRICS, INC. |
发明人 |
MORRISON, H., FRANK;SCHENKEL, CLIFFORD, J.;HIBBS, ANDREW, D. |
分类号 |
G01V3/08;G01V3/18;G01V3/20 |
主分类号 |
G01V3/08 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|