SYSTEM FOR REMOTE SAFETY MONITORING DURING WIRELINE WELL SERVICES IN EXISTING GAS WELLS Russian patent published in 2023 - IPC E21B47/00 

FIELD: gas industry.

SUBSTANCE: devices that ensure safety during wireline well services (WWS) in production wells with excess pressure at the wellhead using devices and instruments lowered into the well on a geophysical cable or scraper wire. A remote monitoring system using a lubricator unit, a logging rig, and a logging hoist as geophysical equipment. The system contains a set of control sensors that record the current values of the process parameters of the said geophysical equipment and are installed on the downhole lubricator and actuators of the downhole lubricator control station to monitor the current process parameters of the lubricator installation; on a logging rig to control: the magnitude of the traction force on the hook suspension, the magnitude of the wind load of the mast; in the logging hoist: to control tension of the logging cable, the speed of movement of the downhole tool, and the depth of descent of the downhole tool, and the control panel. Moreover, the control panel is designed with the ability to process, visualize, store, and manage the data received from the set of control sensors in real time, while these control sensors are wireless with the ability to transmit information to the dispatch console via a radio channel. The set of control sensors additionally contains a sensor for monitoring the angle of inclination of the rig, installed on the rig jib, a sensor for monitoring pressure in the hydraulic drive, installed at the outlet of the hydraulic tank containing the working fluid, a sensor for monitoring the limitation of the lifting height of the hook block, installed on the head of the jib of the logging rig, each designed with the ability to transmit data to the control panel.

EFFECT: safety of the WWS process and reliability of the logging equipment are ensured by providing control and objective assessment of the technical condition of its main functional units in real time.

5 cl, 6 dwg