Scientific and technical journal

«Equipment and technologies for oil and gas complex»

ISSN 1999-6934

Equipment and technologies for oil and gas complex
Calculation technique for determining sensors placement when monitoring pipeline deformations

UDC: 622.691.4.004.53
DOI: 10.33285/1999-6934-2022-1(127)-91-95

Authors:

NIKULINA DARIA P.1

1 National University of Oil and Gas "Gubkin University", Moscow, Russia

Keywords: main gas pipeline, technical diagnostics, stress-strain state, fiber-optic sensors, automated monitoring

Annotation:

The development of continuous diagnostics methods and their implementation in order to monitor the technical state of gas pipelines requires the formation of a scientific-methodological base for the construction of automated monitoring systems. The unique character of each object survey requires a thorough analysis of all kinds of factors affecting its technical state, which prevents the creation of any unified approach. To date, the question of determining the measuring complexes which form the lower level of such automated systems remains open – the choice of methods and measuring devices, their installation at the object under monitoring in the volume that guarantees the construction of a correct adequate model for calculation, analysis and prediction of its stress-strain state. The article emphasizes the relevance of using point fiber-optic strain gauges and discusses the issue of determining measuring devices location that need to be installed on the above-ground section of the beam pipeline without compensation of elongation to monitor it. The main elements of the pipeline stress-strain state are described, which changes from the initial one arising during its installation to the operational one. The solution of the problem of installing the necessary and sufficient number of sensors is proposed in the form of determining the coordinates along the axis of the pipeline, where the deformation of the installed i sensor (socket) caused by possible critical displacement at the installation site of the adjacent (i + 1) sensor (socket) will be commensurate with its sensitivity.

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