Implementation of wireless data transmission method on wells equipped with sucker-rod pumping units

Abstract

When operating wells equipped with SRP units, the parameters of the products are monitored mainly via a wired communication channel in close proximity to the bottom by means of sensors. In the course of the work, it was found that, despite the large number of proposed scientific and engineering solutions, the objective of creating a reliable wireless electromagnetic channel connecting to the well bottom along with a configuration for its implementation is urgent, especially as far as the practical implementation is concerned. A distinguishing feature of the engineering solution proposed is data transmission via a galvanic communication channel in the course of well operation, involving the electric current excitation in the metal string in a well using the ground generator with one terminal connected to the ground part of the metal string and the other one to the pickup electrode on the well surface; switching dielectric loading, splitting the metal string in the downhole into the top and bottom parts, and data receipt from the well bottom depending on the ripple caused by the switching of the dielectric loading, where the data transfer phase synchronized with the upward lift of the rod string providing the possibility to use the feedback in order to track the cycle duration with a constant voltage on the dielectric splitter.