The Switch Sub is a multi-conductor device that enables the tractor conveyance of non-rigid downhole seismic geophone arrays into highly deviated and horizontal wells. The Switch Sub is positioned at the top of the toolstring (between the cable head and geophone array) and the PowerTrac® tractor is placed below the seismic tools.
The device has two positions controllable via surface command:
Switch Sub 371
Tool body outer diameter
Minimum restriction ID
15,000 psi/1,034 bar
177 °C/350 °F
Electrical feed through
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