AN ELECTRODE HEATER ON A CABLE FOR RESTORING THE FLOW SECTION OF TUBING IN WELLS

As part of the study, a new method was developed to restore the throughput capacity of pump and compressor pipes (PCP) in oil and gas wells, based on the use of specialized equipment for electrochemical heating. This device is a downhole tool with a diameter of 30 mm, equipped with special interchangeable blades and scrapers located at the bottom of the device. The tool is lowered using a geophysical cable, which allows for effective heating and removal of deposits from the walls of the pipes, thereby increasing the flow area of the tubing string. The operating principle of the device involves transferring thermal energy from heated electrolyte inside the tool to the lower scraper. Through this process, it is possible to effectively clean the inner surface of the pipes from various types of contaminants and sediments. During the project, complete design documentation was created, based on which an experimental sample of the downhole tool and ground power source were subsequently manufactured. In addition, extensive research was conducted to select the optimal composition and concentration of the electrolyte, as well as to determine the most suitable electrode material to ensure maximum cleaning efficiency. The article provides a detailed description of experiments aimed at determining the ideal parameters for achieving the best results when cleaning the internal surfaces of tubing strings. It also presents a diagram of a regulated ground power supply that ensures stable operation of the downhole tool, and a detailed design of the lower part of the device. The scientific results obtained are reflected in patent number 2821484, confirming the uniqueness of the proposed technical solutions and their high practical value. Thus, the developed method and equipment can significantly increase the efficiency of oil and gas well operations by improving the flow capacity of the tubing string, which helps reduce maintenance costs and increase hydrocarbon production.