Replaceable antennas for wellbore apparatus

Details Replaceable antennas for wellbore apparatus Replaceable antennas for wellbore apparatus

H - Electricity

01

Q

H01Q 1/12 (2006.01) G01V 3/28 (2006.01) G01V 3/30 (2006.01) H01Q 1/20 (2006.01) H01Q 1/22 (2006.01) E21B 47/12 (2006.01)

Patent

CA 2435351

An antenna structure is separately and independently formed with respect to a downhole tool. The antenna is adapted for easy and rapid deployment on the tool. An independently formed 'partial ring section' (or arcuate shaped member) contains an antenna coil. In one embodiment, two or more of the independently formed partial ring sections are placed in a recess on the tubular forming the downhole tool. In another embodiment, the partial ring sections can also be placed in one or more longitudinally distributed sections about the tool. Another embodiment includes partial ring sections forming an antenna with multiple coils of differing orientation to provide directional sensitivity.

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