Well logging apparatus having a cylindrical housing with antennas formed in recesses and covered with a waterproof rubber layer
摘要
A well logging apparatus is disclosed including a cylindrical housing with a transmitting antenna and first and second receiving antennas. The antennas are formed on insulating material in recesses in the housing and have a waterproof rubber covering. The receiving antennas have adjacent compartments containing signal conditioning circuits.
申请公布号
US4949045(A)
申请公布日期
1990.08.14
申请号
US19890369584
申请日期
1989.06.20
申请人
SCHLUMBERGER TECHNOLOGY CORPORATION
发明人
CLARK, BRIAN;JUNDT, JACQUES;LULING, MARTIN;ROSS, MICHAEL O.