Patent ID: 6691779
Filing Date: 2004-02-17
Classification: E21B

Abstract:
A wellbore tool for obtaining data from a subsurface formation, comprising:an antenna; a RF power amplifier coupled to the antenna for providing RF power to a remote sensing unit; modulation circuitry for modulating control commands and for superimposing the modulated control commands on an RP power signal output by the RF power amplifier, the modulation circuitry coupled to the antenna; demodulation circuitry coupled to the antenna for demodulating communication signals transmitted by the remote sensing unit; and logic circuitry for controlling the modes of operation of the wellbore tool, the logic circuitry for controlling whether the wellbore tool is in a receiving mode of operation or in transmitting mode of operation, the logic circuitry being operably connected to the modulation and demodulation circuitry.