scholarly journals Environmental Dynamic Efficiency Of Onshore Oil Fields Located At The Brazilian Coastal Basin

2020 ◽  
Vol 8 (7) ◽  
pp. 135-151
Author(s):  
Marcus Vinicius Dantas de Assunção ◽  
Mariana Almeida ◽  
Prof. Dra. Marcela Marques Vieira
Keyword(s):  
Environmental Sustainability ◽  
Dynamic Models ◽  
Produced Water ◽  
Oil Industry ◽  
Oil Fields ◽  
Data Envelopment ◽  
Dynamic Efficiency ◽  
Exploration And Production ◽  
Coastal Basins ◽  
Dynamic Data Envelopment Analysis

One of the main environmental concerns associated with the exploration and production of oil fields is related to the generation of produced water, this is a strategic challenge for companies since is resposible for the largest share of waste genretared by the oil industry. This theme is presented as multidisciplinary since it is a study with dynamic models in an environmental area linked to the oil industry. Thus, the present work aims to evaluate the performance of dynamic environmental sustainability, from the generation of produced water from onshore oil fields located at the coastal basins of Brazil with higher oil production. The data were made available by the ANP (National Petroleum Agency) from its website, totalizing 67 fields during the years 2014, 2015 and 2016. In addition, dynamic Data Envelopment Analysis was used to determine dynamic efficiency. The results showed a positive effect of the variables directional wells, vertical wells and age, the first two variable showed a fundamental role in determining environmental efficiencies. Therefore, the results allowed to state that there is a poor management of the technological resources in onshore fields of the Brazilian coastal basins, generating excessive amounts of produced water.

scholarly journals Social Networks and Dynamic Firm Performance: Evidence from the Taiwanese Semiconductor Industry

2021 ◽  
Vol 24 (1) ◽  
pp. 62-74
Author(s):  
Wei-Kang Wang ◽  
Wen-Min Lu ◽  
Irene Wei Kiong Ting ◽  
Yu-Hsuan Chen
Keyword(s):  
Firm Performance ◽  
Semiconductor Industry ◽  
Data Envelopment Analysis Model ◽  
Data Envelopment ◽  
Dynamic Efficiency ◽  
Analysis Model ◽  
Redes Sociales ◽  
Dynamic Data Envelopment Analysis ◽  
La Red

Redes sociales y rendimiento dinámico de la empresa: Evidencia de la industria de semiconductores de Taiwán. Este estudio examina la relación entre la interconexión del consejo directivo y el rendimiento de la empresa. Utilizando datos de la industria de semiconductores de Taiwán de 2013 a 2015, este estudio utiliza la centralidad, los agujeros de la estructura y el número de interconexiones entre consejos directivos como proxies de la interconexión de los consejos directivos. Este estudio también evalúa el rendimiento de la empresa a largo plazo mediante un modelo de análisis envolvente de datos dinámicos. donde se concluye que la interconexión de los directivos mejora la eficiencia dinámica. Utilizando un análisis de la red social de los directivos, también identificamos las cinco mejores empresas con mejor interconexión del consejo directivo en términos de centralidad, agujeros estructurales, y el número de directores interconectados. En general, este trabajo es novedoso en la vinculación de la interconexión de los directivos con la eficiencia dinámica. El estudio enriquece la literatura contable existente sobre el papel de los directivos para influir en el rendimiento de la empresa y evaluar éste desde una perspectiva de eficiencia multidimensional. This study examines the relationship between board interlock and firm performance. Using the Taiwanese semiconductor industry’s dataset from 2013 to 2015, this study uses centrality, structure holes, and the number of interlocking boards as proxies of board interlock. This study also evaluates firm performance over a long-term period through a dynamic data envelopment analysis model. which concluded that board interlock improves dynamic efficiency. Using a directors’ social network analysis, we also identified the top five companies with the best board interlock in terms of centrality, structural holes, and the number of interlocking directors. Overall, this paper is novel in linking board interlock to dynamic efficiency. The study enriches the extant accounting literature regarding the role of directors in influencing firm performance and evaluate firm performance from a multidimensional efficiency perspective.

Managing Sulphate Reducing Bacteria (SRB) Problem Associated With Produced Water In One Of The Oil Fields Of Oil India Limited (Oil) - A Case Study

2010 ◽  
Author(s):  
Mool Chand Nihalani ◽  
S. Verma ◽  
J. Kumar ◽  
H. Dubey ◽  
Nripendra Kumar Bharali ◽  
...  
Keyword(s):  
Produced Water ◽  
Oil Fields ◽  
Sulphate Reducing Bacteria ◽  
Reducing Bacteria

scholarly journals A REVIEW OF NANOTECHNOLOGY APPLICATIONS IN THE OIL AND GAS INDUSTRIES

2019 ◽  
pp. 1-14
Author(s):  
B.M. Das ◽  
D. Dutta
Keyword(s):  
Oil Recovery ◽  
Oil And Gas ◽  
New Technology ◽  
Minimum Cost ◽  
Gas Production ◽  
Oil Fields ◽  
Drilling Fluids ◽  
Oil And Gas Production ◽  
Exploration And Production ◽  
Exploration Drilling

Nanotechnology encompasses the science and technology of objects with sizes ranging from 1 nm to 100 nm. Today, exploration and production from conventional oil and gas wells have reached a stage of depletion. Newer technologies have been developed to address this problem. Maximum oil production at a minimum cost is currently a huge challenge. This paper reviews nanotechnology applications in the oil and gas production sector, including in the fields of exploration, drilling, production, and waste management in oil fields, as well as their environmental concerns. The paper reviews experimental observations carried out by various researchers in these fields. The effect of various nanoparticles, such as titanium oxide, magnesium oxide, zinc oxide, copper oxide, and carbon nanotubes in drilling fluids and silica nanoparticles in enhanced oil recovery, has been observed and studied. This paper gives a detailed review of the benefits of nanotechnology in oil exploration and production. The fusion of nanotechnology and petroleum technology can result in great benefits. The physics and chemistry of nanoparticles and nanostructures are very new to petroleum technology. Due to the greater risk associated with adapting new technology, nanotechnology has been slow to gain widespread acceptance in the oil and gas industries. However, the current economic conditions have become a driving force for newer technologies.

Improving the Quality of Electricity for Consumption in the Oil Industry

2021 ◽  
Vol 1 (42) ◽  
pp. 23-28
Author(s):  
Irina Pospelova ◽  
◽  
Tatiana A. Shirobokova ◽  
Vyacheslav Kuzmin ◽  
Tatiana Sterkhova ◽  
...  
Keyword(s):  
Power Consumption ◽  
Oil And Gas ◽  
Reactive Power ◽  
Oil Industry ◽  
Gas Condensate ◽  
Oil Fields ◽  
Variable Nature ◽  
Compensating Devices ◽  
Electric Centrifugal Pump

Currently, 50-60 percents of power consumption in oil fields falls on mechanized oil production. The specificity of the operation of a submersible electric centrifugal pump (ESP), powered by a submersible electric motor (SEM) as consumers of electricity, is due to their operation at a considerable distance from the earth’s surface, the variable nature of the load, the aggressiveness of the produced fluid, and the presence of an extended cable line. (Research objective) To study devices for improving the quality of electricity in the oil industry. (Materials and methods) The results of the survey of the parameters of power consumption of the Novoportovskoe oil and gas condensate field of the PREO «Yamal» Network district No. 1 Kust 18 KTP 10 / 0.4 kV No. 1 input-2. (Results and discussion) The results of studies of the parameters of electricity at the Novoportovskoye oil and gas condensate field have shown that it is advisable to use devices that improve the quality of electricity. Devices can be different, both in design and in scope. Such as voltage stabilizers, phase voltage balancing devices, reactive power compensation devices, filter compensating devices, active mains filters. (Conclusions) Having considered the variety of devices on the market that improve the quality of electricity, as well as devices that compensate for reactive power, it is advisable to use static thyristor reactive power compensators manufactured by JSC Electrointer, Serpukhov.

Dynamic Modal Analysis of a Passenger Bus: Theoretical and Numerical Studies

2021 ◽  
pp. 036119812110288
Author(s):  
Rogério Lopes ◽  
Behzad V. Farahani ◽  
Francisco Q. de Melo ◽  
Nuno V. Ramos ◽  
Pedro M. G. P. Moreira
Keyword(s):  
Modal Analysis ◽  
Environmental Sustainability ◽  
Dynamic Models ◽  
Dynamic Assessment ◽  
Elastic Behavior ◽  
Fem Modeling ◽  
Simplified Approach ◽  
Safety Standards ◽  
The Road ◽  
Deformation Models

The dynamic assessment of a passenger bus is of the highest importance when aiming at high safety standards and low emissions for environmental sustainability. This work studies the dynamic response of a bus considering its modal analysis, for which simple dynamic models were developed for fast determination of the lowest frequencies, mainly arising from the suspension flexibility. In addition, complex natural vibration modes, impossible to determine using simplified models, were calculated via finite element method (FEM) modeling. To study the tire elastic behavior, as the key link between the vehicle and the road, specific deformation models, leading to a stiffness matrix to be combined with that of the vehicle spring suspension at each wheel/axis, were developed. This study aims at proposing a set of mathematical formulations to describe the modal behavior of passenger buses in detail, which could be applicable in any other long vehicle with similar conditions. Two main factors are studied, namely the suspension and the tire deformation effect. An acceptable agreement was verified between the simplified approach and FEM model results for the evaluation of natural frequencies and associated modes.

Dynamic Efficiency and Productivity

2018 ◽  
pp. 182-210
Author(s):  
Rolf Färe ◽  
Shawna Grosskopf ◽  
Dimitris Margaritis ◽  
William L. Weber
Keyword(s):  
Dynamic Models ◽  
Distance Functions ◽  
Data Envelopment ◽  
Supply Chain Networks ◽  
Dynamic Framework ◽  
Future Production ◽  
Productivity Indices ◽  
Bad Outputs ◽  
Time Substitution ◽  
Efficiency And Productivity

The focus of this chapter is to move the measurement of efficiency and productivity from a static to a dynamic approach using distance functions. Since distance functions represent technology, the authors first specify that technology in a dynamic framework is amenable to data envelopment analysis (DEA)–type estimation, explicitly allowing current (or past) decisions to affect future production possibilities. This includes notions of intermediate products, investment, time substitution, supply chain, networks and possible reallocations across time. The chapter shows how to estimate dynamic distance functions and specify a multi-period dynamic model in the spirit of Ramsey (1928), as well as an adjacent-period model familiar from the Malmquist productivity literature, providing an empirical illustration of the former. Extensions of these dynamic models is relatively straightforward for other distance function–based productivity indices, both parametric and nonparametric, as well as for production in the presence of good and bad outputs.

scholarly journals Treatment of produced water from Niger Delta oil fields using simultaneous mixture of local materials

2020 ◽  
Author(s):  
S. G. Udeagbara ◽  
S. O. Isehunwa ◽  
N. U. Okereke ◽  
I. U. Oguamah
Keyword(s):  
Heavy Metals ◽  
Niger Delta ◽  
Produced Water ◽  
Palm Kernel ◽  
Oil Fields ◽  
Distilled Water ◽  
Treatment Techniques ◽  
Group A ◽  
C 30 ◽  
Group B

Abstract Produced water (PW) from petroleum reservoirs often contains heavy metals and other contaminants that are harmful to the environment. Most of the commonly used treatment techniques have been reported to be ineffective in reducing some of the contaminants’ concentrations to recommended disposal levels. This study evaluated the effectiveness of four selected bio-adsorbents combined for treating PW from Niger Delta oil fields. In this study, orange peels (I), banana peels (II), sponge gourd (Luffa cylindrica) (III) and palm kernel fibers (IV) were washed with distilled water, sun-dried (24 h) and dried in the oven at 105 ± 5 °C (3 h, I and II), 150 °C (30 min, III) and 80 °C (3 h, IV). They were ground into powder, sieved (150 μ, Group A) and (300 μ, Group B), washed with 0.4 mol/L HNO3, filtered and rinsed with distilled water. Samples of PW were obtained from fields R, X, and Y in the Niger Delta and analysed for heavy metals using an atomic absorption spectrophotometer (AAS). Samples were treated in adsorption column over 6 h using the adsorbents simultaneously. Treated samples were analysed with AAS and characterised. Adsorption of heavy metals were assessed using Langmuir and Freundlich models. Data were analysed using regression and other statistical methods. For the 150 μ size of sample R, the percentage reductions for the metal concentrations (Pb, Ni, Cd, Cu, Fe, Mg, Cr, Zn, Mn, Ca, Ar, B, Sn and Ba) were found to be 100%, 52.7%, 100%, 100%, 85.87%, 19.48%, 100%, 92.8%, 17.74%, 98.86%, 22.32%, 29.56%, 78.06% and 44.74%, respectively, while the reduction in 300 μ size were 1.52%, 97.2%, 71.4%, 17.1%, 43.8%, 45.6%, 7.04%, 89.6%, 35.4%, 99.6%, 0.0001%, 1.19%, 14.19% and 0.002%, respectively. The finer adsorbents were more effective. Similar results were obtained for PW samples from the other fields. Produced water from Niger Delta oil fields was effectively treated of contaminants using four selected bio-adsorbents mixed simultaneously.

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