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发明名称
Guard electrode type method and apparatus for logging boreholes with switch means foraltering the effective depth of penetration of the current from the measuring electrode
摘要
申请公布号
US3262050(A)
申请公布日期
1966.07.19
申请号
US19630259999
申请日期
1963.02.20
申请人
THE BRITISH PETROLEUM COMPANY LIMITED
发明人
THREADGOLD PHILIP;THOMAS GODFREY STUART
分类号
G01V3/20;G01V3/22
主分类号
G01V3/20
代理机构
代理人
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