Performance evaluation of LoRa based sensor node and gateway architecture for oil pipeline management

These days, the oil industrial industry is leaning toward employing smart field improvements to streamline various activities in the midstream area. Oil transportation over large distances via pipelines has a cheap cost and high efficiency in this sector. If pipelines are not properly maintained, they may fail, potentially causing catastrophic, long-term, and irreversible consequences on both natural and human conditions. Low power wide area networks (LPWANs) are without a doubt one of the domains that cause the most from industrial fields when it comes to realizing the vision of the internet of things (IoT). Long-range (LoRa) is an emerging LPWAN technology that is particularly useful for transmitting data over long distances. The goal of this work is to offer a methodology for managing oil pipelines over long distances utilizing the LoRa communication protocol and the installation of sensor nodes and LoRa gateways along the pipeline. We also used the optimized network engineering tools (OPNET) simulator to examine various simulation findings of LoRa performance.

Simulation model for assessing the risks of accidental oil spills based on cluster

The paper proposes a new risk-oriented approach to the implementation of control and supervision activities in the field of regional environmental control. The issues of building a simulation model of oil spill risks assessment, implemented in the form of a digital mapof the region based on a combination of clustering methods and spatial data analysis are considered. The analysis is based on data on accidents at field oil pipelines in the license areas of Khanty-Mansi Autonomous Okrug for the period from 2014 to 2020. The result of the analysis is a digital mappublished on the Internet with authorized access and reflecting 5 levels of risk for the districts of the study area.

Analysis of Induced Voltage on Pipeline Located Close to Parallel Distribution System

Gas and oil pipelines are widely used to supply customers. They are often laid in parallel with high voltage power lines, sharing right of way. When the pipeline is located near overhead high-voltage power, corrosion caused by induced voltages from AC power lines can occur in utility pipelines. Therefore, the calculation of induced voltage is always required for both interference and maintenance workers as well as pipeline facility safety. For parallel distribution lines, the calculation method for the induced voltage is not suitable due to the excessive error caused by using the screening factors of the neutral current. For a more practical analysis of the induced voltage, a new analysis is needed using the actual neutral current and which also considers the overhead ground conductor and the neutral conductor. This paper analyzed the induced voltage from a parallel distribution system using Carson’s formula and vector analysis. Simulation analysis results are verified by separate Electromagnetic Transient Program (EMTP) simulation.

Experimental determination of the critical depth of cutting of blocked soil cutting by cutters and the length of the ploughshare of chain excavators

The development of civil and industrial construction and the growing trend of construction of underground communications have led to an increase in the volume of work on the laying of gas and oil pipelines, water mains, sewerage systems, power cables and communication cables. Much of the excavation work in the construction of these communications is performed by trench excavators.

Совершенствование методов планирования ремонтных работ на основе анализа надежности нефтепроводной системы

The author presents the methodology for identifying risks in operation of main oil pipelines, which can be based upon in improvement of methods for planning overhauls of the main pipelines. A method for calculating reliability indicators of the system is reviewed, including analysis of the type distributions of the system elements failures pattern. The reliability of the system is determined by purely mathematical operations on the obtained distributions. Such an approach is typical for the system (structural, mathematical) theory of reliability, the key task thereof being the transition from the elements reliability indicators to the system reliability indicators. It is advisable to resolve the problems of calculating the actual reliability of a complex technical system taking for consideration the dependencies of its elements, based on the approach assuming that reliability of the elements and the system shall be calculated in the general multi-level simulation process wherein both physical and structural models are used. Physical models of elements reliability are used at lower levels, while structural models are used at higher ones. Установлена своевременность и актуальность идентификации и формализации структурно-логических связей показателей эксплуатации линейной части магистральных нефтепроводов. Представлена методология идентификации рисков при эксплуатации магистральных нефтепроводов, которая может быть положена в основу совершенствования методов планирования их капитальных ремонтов. Рассмотрен метод для расчета показателей надежности технической системы, предусматривающий анализ типовых распределений отказов ее элементов. Надежность системы находится чисто математическими операциями над полученными распределениями. Подобный подход характерен для системной (структурной, математической) теории надежности, основной задачей которой является переход от показателей надежности элементов к показателям надежности системы. Задачи расчета реальной надежности сложной технической системы с учетом зависимостей ее элементов целесообразно решать на основе подхода, который состоит в том, что расчет надежности элементов и системы проводится в общем многоуровневом имитационном моделирующем процессе с применением физических и структурных моделей. Физические модели надежности элементов используются на низших уровнях, а структурные модели – на высших.

Assessment of Seismogeodynamic Activity of Mining Areas on the Basis of 3D Geoinformation Modeling

The article deals with the creation of an information and analytical platform for assessing external causes of technogenic (man-made) accidents and for improving methods of their predication and prevention on the territories of long-term geological, mining, and engineering activities on the Southeastern (SE) Transbaikal region example — one of the key areas for mining and extraction of the strategic raw minerals in Russia. 3D modeling of active geological structures and hazardous seismogeodynamic processes on GIS-based technologies is a key instrument for forecasting dangerous natural and technogenic events and risk reduction of their occurrence. A matter of minimizing consequences of natural and technogenic disasters for such facilities of increased technological and environmental hazards as minefields, radiochemical facilities, sites for spent nuclear material disposal, dams, gas and oil pipelines, etc. has become essential. It is necessary to assess modern geodynamic territory’s activity on a unified geoinformation platform applying the newest integrated geological-geophysical researches’ methods for these objects, to select seismically active fault-fracture zones, to determine the rate and direction of surface displacement, to establish patterns of subsoil stressed-strained state natural component influence on behavior of local technogenic processes. Taking into account the specificities of geotectonic structure of mining territories, the structure of monitoring seismogeodynamic processes network on multifunctional geodynamic test sites should be developed. Observations made on test sites form the information basis for forecasting of lithosphere condition, taking decisions on rational subsurface management and providing ecological safety of the territory.

Governance failure and the formation of Anti-State Organisations: The Impact of the Amnesty Policy on the Development of Nigeria’s Niger-Delta, Nigeria

The Amnesty policy was devised by the Nigerian government to take-off militants from attacking oil pipelines in Niger-Delta. This was with the view to promoting development in the region. While studies have examined the influence of the Amnesty policy on the empowerment of repentant militants, little is known about how governance failure in the implementation of the policy provokes the formation of anti-state organizations and its contributions to development in the region. This research addresses this gap by examining the role of the Nigerian government in the implementation of the amnesty policy, and identify, if any, failure in the implementation of the policy, provokes the resurgence of anti-state organizations in the region. The study used a qualitative research design and findings indicated that the formation of the Niger-Delta Avengers; an anti-state organisation, was due to the government's inaction to effectively implement the amnesty policy as expected. Furthermore, results showed that the Nigerian government was more interested in protecting its oil pipelines and wells than the development of the area. The paper concludes that the Amnesty policy is a conduit pipe for corruption by successive representatives of Nigerian government.