Development of a new method of geophysical surveys for modern systems of bottomhole parameters monitoring of well operation

UDK: 622.245 + 550.8.08 + 65.011.56 + 65.018.2

DOI: 10.24887/0028-2448-2025-5-114-118

Key words: pulse method, sealed cement stone, crack prevention, continuous monitoring

Authors: A.I. Blotskaya (Gubkin University, RF, Moscow); A.S. Kulkova (Gubkin University, RF, Moscow); D.S. Seleznev (Gubkin University, RF, Moscow); V.V. Sledkov (Gubkin University, RF, Moscow); V.V. Ulanov (Gubkin University, RF, Moscow); M.A. Karavaev (National Research University Moscow Power Engineering Institute, RF, Moscow); V.O. Revin (Gubkin University, RF, Moscow)

This article explores the application of the acoustic technology to assess the integrity of the well casing. The pressing needs of businesses and government agencies are to enhance and refine existing methods for evaluating the condition of structures and their digital simulations. One of the challenges in assessing the integrity of well connections is the absence of a method that enables real-time monitoring during operation, with minimal energy and financial resources for subsurface users. Current research requires interruptions in work and the deployment of specialized equipment, and it is limited to measuring a small portion of the well. Considering the limitations of current technologies, a novel approach is being created that can enhance existing solutions and improve the efficiency of production processes. This approach will also enable the incorporation of new ultrasonic systems for monitoring the structural integrity of extended objects made of ring-shaped cement stone into the standard well construction model. The article outlines the findings of applying the method of pulsed acoustic wave transmission to extended objects up to 8 meters in length, with the aim of detecting longitudinal channels and transverse fractures. The data obtained were compared with the results of simulations conducted using the specialized COMSOL Multiphysics software and tests performed using the AKC-48 geophysical cement meter. The samples were tested with and without insulating material, allowing for a comprehensive assessment of the method's ability to detect cracks and gaps at the interface between the casing and the cement stone.

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