scholarly journals Health Impact of Occupational Exposure to Noise – A Mixed Method Assessment

Author(s):  
Kennedy A. Osakwe

Introduction: Globally, activities in the oil and gas industry are accomplished with the aid of machinery with the potentials to generate high noise levels above 85 dB(A). A visit to a typical crude oil production facility in Sub-Saharan Africa(SSA) revealed noise-producing machinery such as generators, compressors, pumps, fluid, and gas flow, to mention but a few. This study assessed the health risks of exposure to noise in an offshore crude oil installation in Nigeria.

2020 ◽  
Vol 6 (3) ◽  
Author(s):  
Mark Burghardt ◽  
Gage Hart Zobell

Oil and gas production continues to be an important sector of Utah’s economy. Following a 25% loss in production between 2014 and 2015, Utah’s production continues to slowly rebound. Crude oil production in 2019 appears to be slightly ahead of 2018 production. Monthly production averages slightly over three million barrels, placing Utah among the top ten states in crude oil production. Along with the continuing increase in production, the state’s legal framework governing oil and gas continues to develop. This Article examines recent changes in Utah statutes and regulations along with new case law developments involving the oil and gas industry. In particular, this Article discusses a recent federal bankruptcy decision involving midstream agreements, the revision to a Utah statute that now requires mandatory reporting of unclaimed mineral interests, and recent revisions to Utah’s oil and gas regulations.


Author(s):  
Kimberly Reeve ◽  
Dami Kabiawu ◽  

The oil and gas industry is viewed as controversial because of its adverse impacts on the environment. This study draws on legitimacy theory to analyze how CSR factors (including GRI compliance, EITI membership, and internal and external factors of gender diversity on the board and management team, and spending on social projects in the host sub-Saharan countries,) correlate with an increase or decrease in stock prices from 2006 – 2019.


Author(s):  
Lisa M. Gieg ◽  
Mohita Sharma ◽  
Trevor Place ◽  
Jennifer Sargent ◽  
Yin Shen

Abstract Corrosion of carbon steel infrastructure in the oil and gas industry can occur via a variety of chemical, physical, and/or microbiological mechanisms. Although microbial corrosion is known to lead to infrastructure failure in many upstream and downstream operations, predicting when and how microorganisms attack metal surfaces remains a challenge. In crude oil transmission pipelines, a kind of aggressive corrosion known as under deposit corrosion (UDC) can occur, wherein mixtures of solids (sands, clays, inorganic minerals), water, oily hydrocarbons, and microorganisms form discreet, (bio)corrosive sludges on the metal surface. To prevent UDC, operators will use physical cleaning methods (e.g., pigging) combined with chemical treatments such as biocides, corrosion inhibitors, and/or biodispersants. As such, it necessary to evaluate the efficacy of these treatments in preventing UDC by monitoring the sludge characteristics and the microorganisms that are potentially involved in the corrosion process. The efficacies of a biocide, corrosion inhibitor, and biodispersant being used to prevent microbial corrosion in a crude oil transmission pipeline were evaluated. A combination of various microbiological analyses and corrosivity tests were performed using sludge samples collected during pigging operations. The results indicated that the combined treatment using inhibitor, biocide 1 and biodispersant was the most effective in preventing metal damage, and both growth-based and Next-Generation Sequencing approaches provided value towards understanding the effects of the chemical treatments. The efficacy of a different biocide (#2) could be discriminated using these test methods. The results of this study demonstrate the importance of considering and monitoring for microbial corrosion of crucial metal infrastructure in the oil and gas industry, and the value of combining multiple lines of evidence to evaluate the performance of different chemical treatment scenarios.


Author(s):  
Hugh Goyder

The offshore oil and gas industry uses pipes which are made flexible by means of a corrugated construction. Those pipes that run from a platform to the seabed are known as risers while those that connect two pipes on the seabed are known as jumpers. Gas flowing within the pipe interacts with the corrugations and generates noise. This noise is of concern because it is of sufficient amplitude to cause pipework vibration with the threat of fatigue and pipe breakages. This paper examines the conditions that give rise to the large noise levels. The conditions for the onset of noise are investigated using an eigenvalue approach which involves the effect of damping due to losses from the pipe boundaries and pipe friction. The investigation which is conducted in terms of reflection conditions shows why only few of the very many possible natural frequencies are selected. The conditions for maximum noise response are also investigated using a non-linear model of vortex shedding. Here an approach is developed in which the net power generated along a single wavelength is calculated.


2010 ◽  
Vol 132 (4) ◽  
Author(s):  
Hugh Goyder

The offshore oil and gas industry uses corrugated pipes because of their flexibility. Gas flowing within these pipes interacts with the corrugations and generates noise. This noise is of concern because it is of sufficient amplitude to cause pipework vibration with the threat of fatigue and pipe breakages. This paper examines the conditions that give rise to the large noise levels. These conditions, for the occurrence of noise, are investigated using an eigenvalue approach, which involves the effect of damping due to losses from the pipe boundaries and pipe friction. The investigation is conducted in terms of reflection conditions and shows why only few of the very many possible natural frequencies are selected. The conditions for maximum noise response are also investigated by means of a nonlinear model of vortex shedding. Here, an approach is developed in which the net power generated by each wavelength is calculated.


2020 ◽  
Vol 8 (1) ◽  
pp. 126-130
Author(s):  
Camila Weisman

The oil and gas industry remains for Russia the most important source of income, a strategic industry. According to official figures of the Ministry of Finance of the Russian Federation, income from the oil and gas sector, according to the results of 2019, is 40% of the total budget of the country. A large volume of crude oil and gas is exported from the country. The tax burden on raw materials reaches up to 60% of the initial cost, which makes oil production at new fields extremely unprofitable. The most important direction for the country is the transition from a strategy for the sale of crude oil products to refined ones, which have an additional cost. The article discusses the features of domestic oil production, analyzes the reasons for overpriced in comparison with competitive raw materials from other oil producing leader countries. The strategy of ensuring the economic security of the industry is noted, the main tools are listed and the mechanisms for ensuring the economic security of petrochemical industry enterprises are presented.


Author(s):  
Sofia KAFKA

The article deals with the key issues concerning the system of security of fixed assets at the enterprises of the oil and gas industry. The purpose of the article is to investigate the fixed assets features and composition at the the enterprises of oil and gas industry, to determine the approaches to their assessment at the stage of their receipt by the enterprise. The state, dynamics of value and the degree of depreciation of fixed assets in Ukraine for the year 2017 have been analyzed, their features have been distinguished at the enterprises of different branches of the economy. To ensure the effective operation of the enterprises of the oil and gas industry, significant assets are required, and the results of their activities to a large extent depend on the availability and condition of fixed assets that ensure economic sustainability of economic entities. Oil and gas companies include pipelines and related equipment in fixed assets, oil and gas assets, machinery and equipment, buildings, buffer gas, drilling and reconnaissance equipment and other fixed assets. Among the assets of NJSC "NAFTOGAZ OF UKRAINE" for the year 2017, non-current assets occupied 86% of the total assets of the company, of which 94% were fixed assets, what determines the reliability of their accounting as an important element of effective management of enterprises. The dynamics of value and composition of fixed assets of enterprises of the oil and gas industry of Ukraine for 2016-2017 have been determined according to separate economic segments. The cost of fixed assets of NJSC "NAFTOGAZ OF UKRAINE" as of December 31, 2017 amounted to UAH 491 482 million, respectively, according to economic segments, it is structured in such a way that their largest share is concentrated in the system of transportation and distribution of natural gas - almost 48%, for storage of natural gas - 34%, production and sale of natural gas - 12%, and the rest belongs to the economic activities related to oil: the production of crude oil and gas condensate, transportation of crude oil. The composition of fixed assets of extractive enterprises differs from their composition in refineries. Industrial features of mining industry with significant volumes of work related to the disclosure of layers of minerals are characteristic to chemical production with a significant cost of equipment. The main approaches to the evaluation of fixed assets objects at the stage of their entrance to the enterprise have been investigated. The reliability of the accounting information on fixed assets depends on their assessment. When they are received, they are valued at their original cost, that is, by the amount of cash paid or their equivalents or fair value, another form of indemnity granted to obtain the asset at the time of its acquisition or creation, or, if accepted, the amount that is distributed to that asset in the original recognized in accordance with the specific requirements of other IFRSs. After recognition, the entity should choose either a cost model or a revaluation model in its accounting policies and should apply this policy to the entire group of fixed assets. A cessation of recognition occurs after the release of an object or when it does not expect future economic benefits from its use or disposal. In this case, it is recognized as profit or loss.


Author(s):  
H. G. D. Goyder

Corrugated pipes are used in the oil and gas industry because they are flexible. Such pipes may generate large levels of noise when carrying a gas flow. The noise source is due to the cavities in the corrugations in which vortices form and interact with acoustic waves. The resulting flow-acoustic interaction may result in noise levels sufficient to cause structural vibration which may lead to pipework failure due to fatigue. The interaction between the vortex shedding and the acoustic wave is that of a self-sustained oscillation. The objective of the paper is to attempt to produce an analytical model of these oscillations starting from first principles. Although the model does require some experimental input much information is obtained concerning the details of the mechanism and factors controlling how it scales with the geometry, flow velocity and other relevant parameters. The model requires three constants to complete its formulation. These three constants describe the source strength at low acoustic amplitudes, the nonlinearity as the amplitude is increased and a delay term that relates the vortex shedding to the local acoustic velocity. It emerges that the nonlinear parameter is the most important for determining the maximum acoustic amplitude.


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