Durability and Reliability of Electro-Mechanical Relays for Oil and Gas

2017 ◽  
Vol 2017 (1) ◽  
pp. 000536-000541
Author(s):  
Saeed Rafie ◽  
Youssef Boulaknadal
Keyword(s):  
Thermal Stresses ◽  
Failure Modes ◽  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Gas Industry ◽  
Limited Life Expectancy ◽  
Limited Life ◽  
Structural Durability ◽  
Measurement While Drilling ◽  
Testing Instruments

Abstract Electro-mechanical relays (EMRs) are widely used in variety of manufacturing industries including oil and gas. One of their applications in the oil and gas industry is in the design of downhole logging wireline and measurement-while-drilling/logging-while-drilling (MWD/LWD) instruments such as magnetic resonance instruments, formation testing instruments, cement bond tools, etc. EMRs are mainly electrically operated switches that multiplex high-powered circuits using a low-power signal. Typically, EMRs consist of one or two wire coils wrapped around magnetic cores, a movable armature, and a set of contact(s) that reside inside a sealed vacuum compartment. The structural durability and reliability of EMRs has been the subject of research for many years, and these characteristics are considered a prime reliability concerns in the oil and gas industry. Their poor reliability has been documented by their several inherent failure modes, e.g., limited life expectancy due to shock, vibration, temperature and moisture, thermal stresses caused by soldering, contact wear, contact bouncing, and contact arcing/welding. This paper presents results from a reliability study and an engineering assessment to determine the applicability and functionality of EMRs in electromagnetic-acoustic sensors. The discussion includes steps to improve and minimize the risk.

scholarly journals Identification and Prioritization of Risk Factors in an Electrical Generator Based on the Hybrid FMEA Framework

Energies ◽  
2019 ◽  
Vol 12 (4) ◽  
pp. 649 ◽  
Author(s):  
Moath Alrifaey ◽  
Tang Sai Hong ◽  
Eris Supeni ◽  
Azizan As’arry ◽  
Chun Ang
Keyword(s):  
Failure Modes ◽  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Analytic Network Process ◽  
Gas Industry ◽  
Effect Analysis ◽  
Gas Leakage ◽  
Network Process ◽  
Electrical Generator ◽  
Hybrid Distribution

The oil and gas industry is looking for ways to accurately identify and prioritize the failure modes (FMs) of the equipment. Failure mode and effect analysis (FMEA) is the most important tool used in the maintenance approach for the prevention of malfunctioning of the equipment. Current developments in the FMEA technique are mainly focused on addressing the drawbacks of the conventional risk priority number calculations, but the group effects and interrelationships of FMs on other measurements are neglected. In the present study, a hybrid distribution risk assessment framework was proposed to fill these gaps based on the combination of modified linguistic FMEA (LFMEA), Analytic Network Process (ANP), and Decision Making Trial and Evaluation Laboratory (DEMATEL) techniques. The hybrid framework of FMEA was conducted in a hazardous environment at a power generation unit in an oil and gas plant located in Yemen. The results show that mechanical and gas leakage FM in electrical generators posed a greater risk, which critically affects other FMs within the plant. It was observed that the suggested framework produced a precise ranking of FMs, with a clear relationship among FMs. Also, the comparisons of the proposed framework with previous studies demonstrated the multidisciplinary applications of the present framework.

Fouling Effects on Wet Gas Compressor Performance: An Experimental Investigation

2021 ◽  
Author(s):  
Dagfinn Mæland ◽  
Lars E. Bakken
Keyword(s):  
Oil Recovery ◽  
Failure Modes ◽  
Oil And Gas ◽  
High Reliability ◽  
Oil And Gas Industry ◽  
Successful Implementation ◽  
Gas Industry ◽  
Wet Gas ◽  
Dry Conditions ◽  
Compressor Performance

Abstract Achieving profitability in mature areas such as the Norwegian continental shelf forces the oil and gas industry to apply innovative solutions to increase oil recovery and to reduce both operational and investment costs. Wet gas compressors are promising machines for increasing oil recovery from existing fields and to allow for production from small satellite fields in the proximity of existing infrastructure. A prerequisite for successful implementation of subsea wet gas compressors high reliability. Knowledge of possible failure modes is important. The effect of performance degradation due to fouling has been observed during wet gas compressor testing at K-Lab and has initiated further work to better understand and quantify the effects of fouling in wet conditions compared to dry conditions. A test campaign was conducted at the Norwegian University of Science and Technology (NTNU) to investigate the effect of fouled centrifugal compressor performance in both wet and dry conditions. The results documenting these effects are presented together with a proposed model for correcting the effects of fouling between dry and wet conditions.

Deployment of Digital NDT Solutions in the Oil and Gas Industry

2020 ◽  
Vol 78 (7) ◽  
pp. 861-868
Author(s):  
Casper Wassink ◽  
Marc Grenier ◽  
Oliver Roy ◽  
Neil Pearson
Keyword(s):  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Gas Industry

What Does Rent Give to Federal Budget (on the Russia's Budget Dependence upon "Oil Dollars")

2004 ◽  
pp. 51-69 ◽  
Author(s):  
E. Sharipova ◽  
I. Tcherkashin
Keyword(s):  
Oil And Gas ◽  
Strong Dependence ◽  
Oil Prices ◽  
Federal Budget ◽  
Oil And Gas Industry ◽  
Gas Industry ◽  
Resource Rent ◽  
Tax Legislation ◽  
Russian Economy ◽  
The Government

Federal tax revenues from the main sectors of the Russian economy after the 1998 crisis are examined in the article. Authors present the structure of revenues from these sectors by main taxes for 1999-2003 and prospects for 2004. Emphasis is given to an increasing dependence of budget on revenues from oil and gas industries. The share of proceeds from these sectors has reached 1/3 of total federal revenues. To explain this fact world oil prices dynamics and changes in tax legislation in Russia are considered. Empirical results show strong dependence of budget revenues on oil prices. The analysis of changes in tax legislation in oil and gas industry shows that the government has managed to redistribute resource rent in favor of the state.

The Political Economy of Power: Approaches to the Analysis of Relationships between the State and Business in Russia

2011 ◽  
pp. 19-33
Author(s):  
A. Oleinik
Keyword(s):  
Oil And Gas ◽  
Road Construction ◽  
Oil And Gas Industry ◽  
Retail Trade ◽  
Business Community ◽  
The Political ◽  
Economic Power ◽  
Gas Industry ◽  
The Road ◽  
Ruling Elites

The article deals with the issues of political and economic power as well as their constellation on the market. The theory of public choice and the theory of public contract are confronted with an approach centered on the power triad. If structured in the power triad, interactions among states representatives, businesses with structural advantages and businesses without structural advantages allow capturing administrative rents. The political power of the ruling elites coexists with economic power of certain members of the business community. The situation in the oil and gas industry, the retail trade and the road construction and operation industry in Russia illustrates key moments in the proposed analysis.

Consideration of Geopolitical Challenges within the Analysis of Geoenvironmental Risks for Oil and Gas Development of the Russian Arctic

2019 ◽  
Vol 16 (6) ◽  
pp. 50-59
Author(s):  
O. P. Trubitsina ◽  
V. N. Bashkin
Keyword(s):  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Optimal Operation ◽  
The Arctic ◽  
Stage Model ◽  
Oil And Gas Development ◽  
Gas Industry ◽  
The Impact ◽  
Further Development ◽  
Geopolitical Risks

The article is devoted to the consideration of geopolitical challenges for the analysis of geoenvironmental risks (GERs) in the hydrocarbon development of the Arctic territory. Geopolitical risks (GPRs), like GERs, can be transformed into opposite external environment factors of oil and gas industry facilities in the form of additional opportunities or threats, which the authors identify in detail for each type of risk. This is necessary for further development of methodological base of expert methods for GER management in the context of the implementational proposed two-stage model of the GER analysis taking to account GPR for the improvement of effectiveness making decisions to ensure optimal operation of the facility oil and gas industry and minimize the impact on the environment in the geopolitical conditions of the Arctic.The authors declare no conflict of interest

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