FIELD: oil industry.
SUBSTANCE: invention relates to detection of position of plunger during its movement along well. System 182 for identifying position of plunger 110, which moves along well 100, includes a source of sound waves, which is transferred into well, configured to transmit acoustic signal, when plunger 110 reaches point detection in well 100. Acoustic receiver 184 is installed on mouth 116 of well 100 and is configured to receive an acoustic signal. Conductor of acoustic signal is a column of tubing string. Electronic data processing circuit processes received acoustic signal and creates at output an indication of plunger reaching point of detection.
EFFECT: longer life cycle of well.
23 cl, 5 dwg
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