scholarly journals Underwater Vehicle CFD Analyses and Reusable Energy Inspired by Biomimetic Approach

2018 ◽  
Author(s):  
Andra-Teodora Nedelcu ◽  
Cătălin Faităr ◽  
Liviu- Constantin Stan ◽  
Nicolae Buzbuchi
Keyword(s):  
High Speed ◽  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Underwater Vehicles ◽  
Accurate Information ◽  
Underwater Robots ◽  
Ocean Science ◽  
Biomimetic Robots ◽  
Starting Point ◽  
Biomimetic Approach

Over the last few decades, ocean research and exploration have made underwater mechanical systems a necessity. Underwater vehicles provide a new kind of marine platforms that could represent a great necessity in many areas of oceanographic research. Until now, the underwater vehicles come in a verity of shapes, sizes and means of propulsion. Depending on these characteristics, the type and mission of the vehicle are also determined. The underwater robots are used for different inspection and intervention missions in e.g. the oil and gas industry, ocean science research. Due to multiple applications to which the vehicle can participate, it can be successfully used and to determine methods of re-use of marine energy. Environmental mapping provides accurate information about the main areas of interest of the energy, as well as the exploitation possibilities of that. Most of the time, biomimetic robots were inspired their senso structure, from different kind of animals, such as insects, fish and birds. Nowadays, the concept of a underwater robotic vehicles capable to move independently, autonomously or remotely, has a great potential and a large application. This is the reason that the last studies have been directed on biomimetic robots. The fish and other underwater animals have evolved superior swimming capabilities in many ways and represent a starting point to explain the fluid-mechanical principles. Furthermore, the underwater animals develop and achieve extraordinary propulsion efficiencies, acceleration and maneuverability. They can also achieve high speed under water. Implanting and creating a vehicle through a biomimetic approach reduces the energy used to maneuver the vehicle as it can automatically correct its position and displacement. The paper presents an examination of the state of biomimetic robotic fishes, underlining the reason why bio-inspiration can help us in the underwater locomotion technology.

scholarly journals Development of Real-Time Time Gated Digital (TGD) OFDR Method and Its Performance Verification

Sensors ◽  
2021 ◽  
Vol 21 (14) ◽  
pp. 4865
Author(s):  
Kinzo Kishida ◽  
Artur Guzik ◽  
Ken’ichi Nishiguchi ◽  
Che-Hsien Li ◽  
Daiji Azuma ◽  
...  
Keyword(s):  
Real Time ◽  
Optical Fibers ◽  
High Speed ◽  
Oil And Gas ◽  
Scattered Light ◽  
Oil And Gas Industry ◽  
High Signal ◽  
Chirp Pulse ◽  
Sound Waves ◽  
Industry Applications

Distributed acoustic sensing (DAS) in optical fibers detect dynamic strains or sound waves by measuring the phase or amplitude changes of the scattered light. This contrasts with other distributed (and more conventional) methods, such as distributed temperature (DTS) or strain (DSS), which measure quasi-static physical quantities, such as intensity spectrum of the scattered light. DAS is attracting considerable attention as it complements the conventional distributed measurements. To implement DAS in commercial applications, it is necessary to ensure a sufficiently high signal-noise ratio (SNR) for scattered light detection, suppress its deterioration along the sensing fiber, achieve lower noise floor for weak signals and, moreover, perform high-speed processing within milliseconds (or sometimes even less). In this paper, we present a new, real-time DAS, realized by using the time gated digital-optical frequency domain reflectometry (TGD-OFDR) method, in which the chirp pulse is divided into overlapping bands and assembled after digital decoding. The developed prototype NBX-S4000 generates a chirp signal with a pulse duration of 2 μs and uses a frequency sweep of 100 MHz at a repeating frequency of up to 5 kHz. It allows one to detect sound waves at an 80 km fiber distance range with spatial resolution better than a theoretically calculated value of 2.8 m in real time. The developed prototype was tested in the field in various applications, from earthquake detection and submarine cable sensing to oil and gas industry applications. All obtained results confirmed effectiveness of the method and performance, surpassing, in conventional SM fiber, other commercially available interrogators.

scholarly journals Investment Projects in Oil and Gas Industry in Uzbekistan

2018 ◽  
Author(s):  
Dinora Ishmanova
Keyword(s):  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Petroleum Products ◽  
Gas Production ◽  
Gas Extraction ◽  
Mining Operations ◽  
Gas Industry ◽  
Industrial Enterprises ◽  
Starting Point ◽  
The Republic

In recent years, the oil and gas industry of Uzbekistan has been developing very fast, and oil and gas production has grown significantly. Uzbekistan achieved oil independence. Natural gas fields in the Republic are being exported to foreign countries as well as satisfying the needs of all types of industrial enterprises and population. Growth of oil and gas extraction is achieved by opening up of new oil and gas constructions and fields, increasing the efficiency of mining operations, and applying new methods of increasing the level of resource utilization. Determining the ultimate goal of socio-economic transformations in our country is the starting point of the current reform strategy. At the same time, the focus is on ensuring the dynamic development of the fuel and energy complex, increasing oil and gas extraction and processing, and gaining energy independence of the republic. LUKOIL is one of the world's largest vertically -Integrated companies engaged in the extraction and processing of oil and gas, manufacturing of petroleum products and petrochemicals. The main areas of its activity, the Company holds a leading position in the Russian and global markets.

On Quality 4.0 in project-based industries

2020 ◽  
Vol 32 (4) ◽  
pp. 725-739
Author(s):  
Jan Emblemsvåg
Keyword(s):  
Quality Management ◽  
Oil And Gas ◽  
Relevant Literature ◽  
Oil And Gas Industry ◽  
Theoretical Models ◽  
Future Contract ◽  
Total Quality ◽  
Content Type ◽  
Starting Point ◽  
Practical Implications

PurposeProject-based industries seem ignored in the quality management literature. These industries have some peculiarities that warrant attention, and the purpose of this paper is to discuss some of the critical aspects of project-based industries concerning quality management and particularly Quality 4.0.Design/methodology/approachThe approach is based on reviewing the literature and then developing the paper using basic definitions, literature, logic and experience. It should be noted that the type of literature review is so-called “integrative” due to the fact that the topic of this paper is new. Furthermore, for this paper, as for integrative literature reviews in general, the purpose is to create initial and preliminary conceptualizations and theoretical models, rather than review old models. Creative collection of data is therefore key to combine perspectives and insights from different sources. This paper is therefore more a discussion piece rather than a paper presenting results per se. The relevant literature is only a starting point from which the argument is developed.FindingsThe paper demonstrates that quality management in project-based industries is outdated, driven by adversarial and legalistic interpretations of contracts, which results in manual work and reactive quality management. Initially, this can be a stumbling block for Quality 4.0. However, the greater credibility and transparency of Quality 4.0 technologies can enable relational contracting such as partnering. This will subsequently result in major improvements in total quality.Research limitations/implicationsThe research was initially triggered by industry experience over years. The empirical aspect of the paper is therefore related to the construction, shipbuilding and the oil and gas industry. Because contracting regimes are similar across these industries, the findings are arguably applicable to other project-based industries. However, this is not demonstrated. Furthermore, as the topic is new to both literature and practice it is likely that the paper has not covered all relevant aspects that will emerge as the ideas are implemented.Practical implicationsThe paper supports the argument for developing the contracting into a relational approach away from the adversarial and legalistic approach of today. It is illustrated how Quality 4.0 technologies can help in this transition. Therefore, the practical implications can become substantial in how industry works and the research about it.Social implicationsIf the ideas were implemented, they could change contract management in project-based industries from the adversarial approach of today to genuine cooperation. It would therefore be relevant for teaching future contract managers. The project outcomes would also result in improved quality and reduce the loss to society.Originality/valueThe combination of Quality 4.0, new contracting regimes and project-based industries is according to the knowledge of this author, an original contribution that can help people improve the management of quality in project-based industries. With these industries constituting a large and growing share of an economy, the value can also become significant once practical issues concerning implementation are sorted out.

Path Following of Underactuated Marine Underwater Vehicles in the Presence of Unknown Ocean Currents

2014 ◽  
Author(s):  
Signe Moe ◽  
Walter Caharija ◽  
Kristin Y. Pettersen ◽  
Ingrid Schjølberg
Keyword(s):  
Oil And Gas ◽  
Autonomous Underwater Vehicle ◽  
Autonomous Underwater Vehicles ◽  
Path Following ◽  
Oil And Gas Industry ◽  
Underwater Vehicle ◽  
Underwater Vehicles ◽  
Ocean Currents ◽  
The Arctic ◽  
Ocean Current

The use of autonomous marine vehicles, and especially autonomous underwater vehicles, is rapidly increasing within several fields of study. In particular, such vehicles can be applied for sea floor mapping, oceanography, environmental monitoring, inspection and maintenance of underwater structures (for instance within the oil and gas industry) and military purposes. They are also highly suitable for operations below ice-covered areas in the Arctic. However, there are still many challenges related to making such underwater vehicles autonomous. A fundamental task of an autonomous underwater vehicle vessel is to follow a general path in the presence of unknown ocean currents. There exist several results for underwater vehicles to follow a general path when no ocean currents are present [1] and to follow a geometrically simple path such as a straight line when ocean currents affect the vehicle [2, 3], but the problem of general path following in the presence of unknown ocean currents has not been solved yet. This paper presents a method to achieve this. The results are an extension of the results in [1], and introduce a virtual Serret-Frenet reference frame that is anchored in and propagates along the desired path. The closed-loop system consists of an ocean current observer, a guidance law, a controller and an update law to drive the Serret-Frenet frame along the path, and is shown to be asymptotically stable given that certain assumptions are fulfilled. This guarantees that the autonomous underwater vehicle will converge to the desired path and move along it with the desired velocity. Simulation results are presented to verify and illustrate the theoretical results.

Human Factors in Domain Adaptation Within the Oil and Gas Industry

2021 ◽  
Author(s):  
Iraj Ershaghi ◽  
Milad A. Ershaghi ◽  
Fatimah Al-Ruwai
Keyword(s):  
Decision Making ◽  
Large Scale ◽  
Oil And Gas ◽  
Deep Understanding ◽  
Digital Technologies ◽  
Oil And Gas Industry ◽  
Petroleum Engineering ◽  
Gas Industry ◽  
Starting Point ◽  
Domain Expertise

Abstract A serious issue facing many oil and gas companies is the uneasiness among the traditional engineering talents to learn and adapt to the changes brought about by digital transformation. The transformation has been expected as the human being is limited in analyzing problems that are multidimensional and there are difficulties in doing analysis on a large scale. But many companies face human factor issues in preparing the traditional staff to realize the potential of adaptation of AI (Artificial Intelligence) based decision making. As decision-making in oil and gas industry is growing in complexity, acceptance of digital based solutions remains low. One reason can be the lack of adequate interpretability. The data scientist and the end-users should be able to assure that the prediction is based on correct set of assumptions and conform to accepted domain expertise knowledge. A proper set of questions to the experts can include inquiries such as where the information comes from, why certain information is pertinent, what is the relationship of components and also would several experts agree on such an assignment. Among many, one of the main concerns is the trustworthiness of applying AI technologies There are limitations of current continuing education approaches, and we suggest improvements that can help in such transformation. It takes an intersection of human judgment and the power of computer technology to make a step-change in accepting predictions by (ML) machine learning. A deep understanding of the problem, coupled with an awareness of the key data, is always the starting point. The best solution strategy in petroleum engineering adaptation of digital technologies requires effective participation of the domain experts in algorithmic-based preprocessing of data. Application of various digital solutions and technologies can then be tested to select the best solution strategies. For illustration purposes, we examine a few examples where digital technologies have significant potentials. Yet in all, domain expertise and data preprocessing are essential for quality control purposes

scholarly journals NANOTRANSFORMATIONS IN THE BLANKET OF MATERIALS AT THE COMBINED PROCESSING BY UNTIED GRANULES

2018 ◽  
Vol 1 (2) ◽  
Author(s):  
V. P. Smolentsev ◽  
A.V. Kuzovkin
Keyword(s):  
Electric Field ◽  
High Speed ◽  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Gas Industry ◽  
Liquid Environment ◽  
Processing Zone ◽  
To Receive ◽  
Required Quality

Nanotransformations of a blanket at the fair dimensional combined processing with imposing of electric field the tool in the form of untied metal granules are considered. An object of researches are the figurine details applied in aviation, the missile and space equipment and in the oil and gas industry: driving wheels and a flowing part of cases of turbo-pump units, screws, krylchatka where there are sites of variable curvature with limited access of the tool in a processing zone.It is shown that the combination in the combined process of two-component technological environments of current carrying granules and the electroconductive liquid environment given with a high speed to a processing zone allows to receive the required quality of a blanket; action of electric field from a source with the increased tension allows to create at fair dimensional processingthe required peening from blows of firm granules. It gives the chance to raise a resource and durability of responsible knots of the aerospace equipment and oil and gas equipment, to expand the field of use of the combined processing with untied granules on a detailwith the sitesnot available to processing by a profile electrode.

High-Speed Permanent-Magnet Motors for the Oil and Gas Industry

2007 ◽  
Author(s):  
K. Weeber ◽  
C. Stephens ◽  
J. Vandam ◽  
A. Gravame ◽  
J. Yagielski ◽  
...  
Keyword(s):  
Permanent Magnet ◽  
High Speed ◽  
Recent Progress ◽  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Induction Machines ◽  
Permanent Magnet Motors ◽  
Gas Industry ◽  
Fully Integrated ◽  
Process Gas

Recent years have seen an increase in high-speed electric compression for Oil & Gas applications where high-speed electric motors drive compressors directly without intermediate gears. To date induction machines have been the predominant workhorse of the industry. The permanent-magnet machine technology provides an alternative that promises a highly reliable and robust system design, especially in applications where motor and compressor are fully integrated and share the same process gas environment. This paper provides an update on the recent progress in developing the permanent magnet technology for Oil & Gas applications in which the process gas may contain corrosive elements.

Industrial Trent Development and Application

1996 ◽  
Author(s):  
J. A. Roberts
Keyword(s):  
Power Generation ◽  
Gas Turbine ◽  
High Speed ◽  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Current Status ◽  
Combustion System ◽  
Gas Industry ◽  
Aero Engine ◽  
Engine Testing

The industrial Trent is the largest aeroderivative gas turbine available, at 50+ MW, and the most efficient gas turbine available to industrial and marine operators, at 42%. Its Dry Low Emissions combustion system embodies the features of the similar combustor on the industrial RB211, which is enjoying very successful service experience. Its design features and derivation from the aero engine are reviewed, together with an assessment of the maintenance aspects of the engine. The current status of the engine validation programme is discussed, covering both component rig testing and progress on the full engine testing being carried out in Montreal, Canada. The applications of the industrial Trent are considered by reviewing the major markets and examining its suitability, both technically and economically, for several existing and emerging sectors. Launched as a power generation machine, the industrial Trent is shown to be well suited to those sectors which have resulted from the growing deregulation of this industry worldwide. In addition it is shown to be attractive for certain applications in the oil and gas industry and, in the marine market, for some large high speed vessel concepts.

scholarly journals Chip Formation and Machinability of Nickel-Base Superalloys

2011 ◽  
Vol 278 ◽  
pp. 460-465 ◽  
Author(s):  
Carsten Siemers ◽  
Badya Zahra ◽  
Dawid Ksiezyk ◽  
Pawel Rokicki ◽  
Zdeněk Spotz ◽  
...  
Keyword(s):  
Formation Process ◽  
Chip Formation ◽  
High Speed ◽  
Oil And Gas ◽  
Elevated Temperatures ◽  
Orthogonal Cutting ◽  
Oil And Gas Industry ◽  
Alloy 625 ◽  
Nickel Base Superalloys ◽  
Nickel Base

Nickel-base superalloys like Alloy 625 are widely used in power generation applications and in the oil and gas industry due to their unique properties especially at elevated temperatures. The chip formation process of Alloy 625 is not yet well understood. Therefore, the cutting process of this alloy has been studied in detail by means of orthogonal cutting experiments at conventional cutting speeds and in the high-speed cutting regime. Alloy 625 shows a cutting parameter dependent change in the chip formation process from continuous to segmented chips. Silver has been added to Alloy 625 to improve the machinability. During machining of these modified alloys short breaking chips develop so that cutting processes are eased and can be automated.

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