| 摘要 |
FIELD: oil and gas production. ^ SUBSTANCE: group of inventions may be used to establish wireless communication between device located inside casing string (CS) and sensor located outside CS in oil, gas wells, and also on surface or underground pipelines. Well device is located inside CS and is used to generate magnetic flow with the possibility of magnetic saturation of CS. Electromagnet signal is sent from well device via CS. Sent signal is received in reservoir sensor outside CS. Then electromagnet signal is detected in well device from space outside CS. At the same time to transmit electromagnet waves, electromagnetic signal is superimposed onto magnetic flow. System for provision of communication through CS comprises device for provision of communication via CS and reservoir sensors arranged outside CS. Specified device includes well device body, device for generation of magnetic flow with the possibility of magnetic saturation of CS, transmitter for transfer of electromagnetic signal via magnetic flow from specified well device through CS for reception in reservoir sensor, and detector for detection of electromagnet signal in well device. ^ EFFECT: improving reliability, stable operation of wireless communication. ^ 26 cl, 4 dwg |
