Improving the diagnostics of underground pipelines at oilandgas enterprises based on determining hydrogen exponent (PH) of the soil media applying neural networks
Journal Title: Восточно-Европейский журнал передовых технологий - Year 2019, Vol 4, Issue 5
Abstract
<p>A set of key parameters and information flows has been formed to simulate stages of probing the outside surface of underground metal pipelines (UMP) taking into account pH of the soil contacting with the pipe metal.</p><p>Specimens of 17G1S steel placed in acid, alkaline and neutral media were examined using a polarization potential meter in a complex with a contactless current meter. Principles of application of neural networks (NN) in processing experimental results were formulated. A database has been developed. It meets the initial conditions for controlling the soil pH at the boundary with the metal under real conditions.</p><p>Elements of the optimization approach for assessing pH of a coated UMP in the soil medium were proposed. The approach is based on the multiplicative qualimetric criterion of quality for the UMP section taking into account two groups of coefficients. The first group of coefficients refers to the internal coefficients and characterizes the metal pipeline and the second group refers to the external medium (i.e., soil electrolyte). Elements of the optimization approach for assessing pH of the coated pipeline in the soil medium were proposed.</p><p>An NN was presented for the "pipeline-coating" system, which:</p><p>1) is capable of solving the problem of cluster analysis and image classification;</p><p>2) makes it possible to process data without their prior spectral transformation operating with discrete counts of information signals.</p><p>The proposed NN type allows it to dynamically expand its own knowledge base of possible types of defects in controlled objects (pipelines) in the process of operation. With the help of the NN, soil pH was assessed for an UMP of 17G1S steel for three situations.</p>The above information is important for improving the methods for controlling oil-and-gas enterprise UMPs, in particular, the methods for a correct assessment of anode current density in metal defects taking into account nonlinear character of informative parameters.
Authors and Affiliations
Larysa Yuzevych, Ruslan Skrynkovskyy, Volodymyr Yuzevych, Vitalii Lozovan, Grzegorz Pawlowski, Mykhailo Yasinskyi, Ihor Ogirko
Keywords
Related Articles
- EP ID EP666846
- DOI 10.15587/1729-4061.2019.174488
- Views 63
- Downloads 0
Investigating the influence of volumetric hydrophobization on the formation of phase composition of cement stone and its physical-mechanical properties
<p>We have examined the influence of the most widely used silicon-organic surface water repellent GKZH-11K on the physical-mechanical properties and the phase structure formation of cement is the fact that the introducti...
Method of integral estimation of channel state in the multiantenna radio communication systems
<p>A method of integrated estimation of channel state in multiantenna radio communication systems was developed. The distinguishing feature of the proposed method is estimation for several indicators, namely the bit erro...
Method for determining elements of urban infrastructure objects based on the results from air monitoring
<p>The study proposes a two-stage method for determination of elements of urban infrastructure objects in images made by air monitoring systems. The first stage implies determining the contours of objects in images. The...
Developing a technology for making goat's cottage cheese using the preparation Yodkazeine
<p>In recent years, there has been a deficit of several essential components, with the iodine deficiency of varying degree, from mild to severe, relating to the most common phenomena and is observed in 90 % of the Ukrain...
Comparative assessment of the competence of experts in the field of higher education by different methods
<p class="a"><span lang="EN-US">The methods and means of assessing the competence of experts in the field of higher education are explored. An assessment of the competence of experts in the field of higher education usin...