Published August 2025, Pg. 39-44
Section: Oil and gas preparing and transportation
UOT: 621.646.8
DOI: 10.37474/0365-8554/2025-08-39-44
Identification of stress concentration zones in underground pipelines using modern software
F.G. Seyfiyev PhD in Tech. Sc. - Oil-Gas Research and Project InstituteThis abstract presents a review of magnet memory method inspection for oil and gas pipelines. Magnet memory inspection is an advanced technique employed in the maintenance and safety monitoring of oil and gas pipelines. This method leverages magnetic flux leakage (MFL) to detect and evaluate anomalies such as corrosion, metal loss, and structural defects within pipeline walls. It is known that stress concentration (SC) zones, in which corrosion, fatigue and creep processes develop most intensively, are the main sources of damages occurrence in operating structures. Consequently, detecting SC zones is one of the most important tasks of equipment and structures diagnostics. By applying a magnetic field to the pipeline and analyzing the resultant flux variations, inspectors can identify areas of stress concentration (SC) zones. The gathered data is analyzed using complex algorithms to identify and quantify defects, assess their potential impact, and predict future deterioration trends.
The implementation of MMM technology enhances pipeline safety by enabling early detection of issues that could lead to failures, thus allowing for timely repairs and preventive measures. Magnet memory inspection is crucial for proactive maintenance, reducing the risk of catastrophic failures, and extending the operational lifespan of pipelines. This abstract highlights the significance of magnet memory inspection in ensuring pipeline integrity, its methodology, and its impact on the oil and gas industry’s safety and efficiency standards.
In the article, the issues of determining the Stress Concentration Zones (SZZ) and determining the operational feasibility of the pipeline using the Magnetic Memory Method (MMM) were considered. Initially, the pipeline was diagnosed by non-contact magnetic examination based on the Magnetic Memory Method. The diagnostic work carried out using the software was analyzed and the coordinates of GKZs were determined. In the zones that can be considered a potential danger for the future operation of the pipeline, trenches are opened and those zones are inspected. After inspectionof of anomalies, the group of anomalies is identified and based on the established group some preventive measures are taken.
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