METHOD FOR DETECTING UNSANCTIONED TIE-INS IN A PIPELINE AND APPARATUS FOR IMPLEMENTATION THEREOF Russian patent published in 2021 - IPC F17D5/02 

FIELD: pipeline transport.

SUBSTANCE: method and apparatus relate to the field of pipeline transport and can be used for identifying the location in the field, with the accuracy applied by a differential GPS, of unsanctioned tie-ins in a pipeline due to the implemented technical solutions. The method for detecting unsanctioned tie-ins in a pipeline includes continuous measuring of the vertical component of the magnetic induction above and along the pipeline, determining the modulus of the vertical vector of magnetic induction resulting in a magnetogram and recording the read magnetogram to a solid-state memory, wherein an alternating magnetic field directed towards the pipeline is excited and the section of the pipeline with an unsanctioned tie-in is determined by a change in the configuration of the magnetic field caused by a defect in the geometry of the pipe wall. The substance of the invention amounts to implementation of a possibility of identifying a tie-in by a change in the image of the magnetic field excited by the antenna unit of the apparatus upon exposure to a magnetic field of a defect in the geometry of the pipe wall in form of a fitting or a clamp with a fitting. The method is implemented in an apparatus comprising a body with an electronic unit and an antenna unit, a generator, a preamplifier, a controller, a differential GPS-Glonass, an indication unit, a random access memory unit and an induction sensor unit, an antenna, ensuring identification and determination of the coordinates of the location of the tie-in on the processing area using a program of a personal computer of the indication unit.

EFFECT: implementation of a possibility of identifying a tie-in by a change in the image of the magnetic field excited by the antenna unit of the apparatus upon exposure to a magnetic field of a defect in the geometry of the pipe wall.

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