TRANSMISSION OF TELEMETRY DATA FROM OFFSHORE WELL BOTTOM TO SEA PLATFORM

摘要

FIELD: mining.;SUBSTANCE: proposed method comprises the steps whereat well data is generated as an electromagnetic signal to ne radiated by radiator to receive telemetry info as the electromagnetic signal. Note here that said telemetry info is received by cable antenna with negative buoyancy. Note also that cable antenna comprises active two-electrode section and symmetric feeder composed by twisted pair of wires. Note that feeder length is selected to be at least sea depth at the point of submersion of cable antenna on shelf. Besides, signal received by antenna can be amplified by amplifier incorporated with said antenna and arranged between active two-electrode section and symmetric feeder. Additionally, received signal is filtered by rejection filter incorporated with cable antenna between two-electrode section and amplifier.;EFFECT: higher reliability, sensitivity, lower power potential of electromagnetic channel of telemetry data transmission.;3 cl, 2 dwg