TELEMETRY SYSTEM OF WELLBORE MONITORING Russian patent published in 2018 - IPC E21B47/12 E21B47/20 H04B5/00 H04B13/02 

FIELD: oil and gas industry.

SUBSTANCE: telemetry system of wellbore monitoring contains a measuring module that includes sensors, for example, the inclinometric ones, a power module, a transmitting module generating impulses for transmitting fluid pressure information via hydraulic connection. The surface equipment comprises a receiving device connected to the flushing fluid sensor installed in the mud flow line. All modules are installed in a sealed inner case centered in the outer body of the telemetry system, an annular gap is provided between the outer and inner bodies to enable passage of drilling mud. In the inner body there is a control board that connects the transmitting module and the measuring module. The power supply module contains batteries and a generator installed in a separate body having an upper coupling portion, the lower portion of the generator body is connected to the inner body and the outer body of the system. In the generator body there is a hole for passage of drilling mud. The generator has a wired connection to the control board. The transmitting module further comprises a cable transmission channel, for this purpose, a groove is provided in the wall of the generator body for laying the cable from the control board to the transmitting module, an inductive coil is arranged on the upper coupling portion for transmitting data from the generator body to the cable transmission channel by exciting electromagnetic induction.

EFFECT: increased data transmission rate, increased reliability of the system.

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