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1

Determination of the location of the technological equipment on the chassis of the oil field aggregates

Hasanov Ramiz, Kazimov Musa

Nafta-Gaz

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2022

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R. 78, nr 4

269--273

EN

Currently, it is impossible to imagine the repair and drilling of any well without the use of modern mobile equipment. With technological progress, not only new development technologies in the branch of field exploitation appear, but also new equipment with which oil and gas wells are repaired and reconstructed. Today, oil production is mainly carried out by the operation of wells without a pumping derrick, which makes it possible to sharply reduce the cost of metal and funds. Operations of downhole equipment lifting and tripping in a well are carried out using self-propelled mobile units representing tracked or wheeled transport vehicles on which a derrick (mast) with a winch, transmission and hoisting system is mounted. Lifting units are equipped with a mechanism for raising the mast to the working position and lowering it to the transport position. Installations with a lifting capacity of up to 32 tons inclusive are designed for lifting operations during routine underground repair of wells, whereas over 32 tons minimal lift capacity are required during major repairs and well development. The mobile unit is subjected to oscillatory movements both during transportation along unpaved, semi - destroyed, muddy and snow-covered roads to the well (for development, repair), and during well drilling. The frequency of the oscillating movement depends on the state of the uneven road. The unevenness of the road is expressed by spectral functions. In this case, both the chassis and the body of the mobile unit, as well as the technological equipment located on it, are subjected to oscillatory movements. As a result, technological equipment, as well as devices and equipment located on it, lose their accuracy, which leads to accidents both during drilling and during operation. Therefore, in order to minimize the influence of oscillatory movements on the operability of technological equipment, a technique was developed for technological equipment positioning on the chassis of a mobile unit at an optimal scheme according to the proposed method.

PL

Obecnie nie można sobie wyobrazić naprawy i wiercenia otworów bez nowoczesnego sprzętu. Wraz z postępem technologicznym następuje nie tylko rozwój nowych technologii w zakresie eksploatacji złóż, ale także nowych urządzeń, za pomocą których dokonuje się napraw i rekonstrukcji odwiertów ropnych i gazowych. Obecnie wydobycie ropy naftowej odbywa się głównie poprzez eksploatację otworów bez wieży wydobywczo-obróbczej, co pozwala na znaczne obniżenie kosztów zakupu stali i innych nakładów finansowych. Operacje podnoszenia i zapuszczania wyposażenia wgłębnego w otworze wykonywane są za pomocą samobieżnych jednostek mobilnych, obejmujących gąsienicowe lub kołowe pojazdy transportowe, na których zamontowana jest wieża wiertnicza (maszt) z wciągarką, przekładnią i urządzeniem dźwigowym. Jednostki podnoszące wyposażone są w mechanizm podnoszenia masztu do pozycji roboczej i opuszczania go do pozycji transportowej. Instalacje o udźwigu do 32 ton włącznie przeznaczone są do operacji podnoszenia podczas bieżących napraw odwiertów, a powyżej 32 ton – do poważnych napraw i prac w odwiertach. Jednostka mobilna jest poddawana ruchom oscylacyjnym zarówno podczas transportu po nieutwardzonych, częściowo zniszczonych, błotnistych i zaśnieżonych drogach prowadzących do odwiertu (w celu wykonania prac, napraw), jak i podczas wiercenia otworu. Częstotliwość ruchu oscylacyjnego zależy od wysokości profilu nierówności drogi. Nierówności drogi wyrażają funkcje spektralne. W takim przypadku zarówno podwozie, jak i korpus jednostki mobilnej, a także usytuowane na niej wyposażenie technologiczne poddawane są ruchom oscylacyjnym. Powoduje to, że sprzęt technologiczny, jak również znajdujące się na nim urządzenia i wyposażenie tracą swoją precyzyjność, co prowadzi do wypadków zarówno podczas wiercenia, jak i podczas prac operacyjnych w odwiertach. Dlatego w celu zminimalizowania wpływu ruchów oscylacyjnych na sprawność urządzeń technologicznych opracowano technikę usytuowania urządzeń technologicznych na podwoziu jednostki mobilnej w optymalnym schemacie, zgodnie z proponowaną metodą.

2

Comparative analysis of multi-criteria decision making methods for the assessment of optimal SVC location

Aydin Faruk, Gümüş Bilal

Bulletin of the Polish Academy of Sciences. Technical Sciences

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2022

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Vol. 70, nr 2

art. no. e140555

EN

The goal of multi-criteria decision making (MCDM) is to select the most appropriate of the alternatives by evaluating many conflicting criteria together. MCDM methods are widely available in the literature and have been used in various energy problems. The key problems studied in electrical power systems in recent years have included voltage instability and voltage collapse. Different flexible alternating current transmission systems (FACTS) equipment has been used for this purpose for decades, increasing voltage stability while enhancing system efficiency, reliability and quality of supply, and offering environmental benefits. Finding the best locations for these devices in terms of voltage stability in actual electrical networks poses a serious problem. Many criteria should be considered when determining the most suitable location for the controller. The aim of this paper is to provide a comparative analysis of MCDM techniques to be used for optimal location of a static VAR compensator (SVC) device in terms of voltage stability. The ideal location can be determined by means of sorting according to priority criteria. The proposed approach was carried out using the Power System Analysis Toolbox (PSAT) in MATLAB in the IEEE 14-bus test system. Using ten different MCDM methods, the most appropriate locations were compared among themselves and a single ranking list was obtained, integrated with the Borda count method, which is a data fusion technique. The application results showed that the methods used are consistent among themselves. It was revealed that the integrated model was an appropriate method that could be used for optimal location selection, providing reliable and satisfactory results to power system planners.

3

Maximization of injected power and efficiency based optimal location of DPFC using iterative procedure

Gupta Satosh Kumar, Tripathi Jayant Mani, Ranjan Marinal, Gupta Ravi Kumar, Kumar Dheeraj

Archives of Electrical Engineering

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2022

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Vol. 71, nr 1

91--108

EN

Among the FACTS device, the distributed power flow controller (DPFC) is a superior device. This can be evaluated after eliminating the dc capacitor between shunt and series convertors of the unified power flow controller (UPFC) and placing a number of low rating single phase type distributed series convertors in the line instant of using single large rating three phase series convertors as in the UPFC. The power flow through this dc capacitor as in the UPFC now takes place through the transmission line at a third harmonic frequency in the DPFC. The DPFC uses the D-FACTS that allows the replacement of a large three-phase converter as in the UPFC by several small-size series convertors present in the DPFC. The redundancy of several series convertors increases the system’s reliability of the power system. Also, there is no requirement for high voltage isolation as series convertors of the DPFC are hanging as well as single-phase types. Consequently, the DPFC system has a lower cost than the UPFC system. In this paper, the equivalent ABCD parameters of the latest FACTS device DPFC have been formulated with the help of an equivalent circuit model of the DPFC at the fundamental frequency component. Further, the optimal location in the transmission line and maximum efficiency of the DPFC along with Thyristor Controlled Series Compensator (TCSC), Static Synchronous Shunt Compensator (STATCOM) and UPFC FACTS devices have been investigated using an iteration program developed in MATLAB under steady-state conditions. The results obtained depict that the DPFC when placed slightly off-center at 0.33 fraction distance from the sending end comes up with higher performance. Whereas, when the TCSC, STATCOM and UPFC are placed at 0.16, 0.2815, 0.32 fraction distances from sending end respectively give their best performance.

4

An approach to the location of a warehouse distribution centre in the international environment: a Slovenian perspective

Muha R., Sever D., Sokolovskij E.

Zeszyty Naukowe Akademii Morskiej w Szczecinie

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2018

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nr 55 (127)

79--85

EN

The article identifies the optimal location of the warehouse distribution centre for Slovenian companies in the international environment. The process of location selection takes into account a series of interconnected factors, including flows of goods between countries; the level of development of the transport system and transport infrastructure; the number of transport companies; labour costs and labour productivity; and the tax benefits existing in each country. Scientific literature mentions various methods for choosing a warehouse location, which differ in complexity and in the use of different qualitative and quantitative factors. However, the methods discussed have a disadvantage in that they use the current input variables when defining the optimal location. Choosing the optimal warehouse location is an important long-term logistics process, which should consider the fact that the environment in which companies operate is constantly changing. Using the proposed approach, future trends in the international environment are presented, which enables a better choice of warehouse location in the long run. Through this approach, companies can save on logistic costs, while also providing better quality logistics services. The analysis represents a starting point for deciding the location of a warehouse, but does not constitute a complete set of guidelines for companies to follow, as the choice of a particular location is dependent upon the complexity of the international environment in which a company operates.

5

The cost minimizing solution of the transportation problem for the location of the building machinery yard along the road under construction

Anysz H.

Przegląd Naukowy Inżynieria i Kształtowanie Środowiska

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2018

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Vol. 27, No. 1

19--27

EN

This paper presents costs arisen from every-day transport of building machinery from the yard located by the road being constructed to the place of work. These costs are not directly associated with the income creating. The optimal choice of the place for the machinery yard can substantially lower these costs. The following two methods of finding the optimal place were proposed: based on the shortest distance and based on the lowest cost of building machinery self-transport. They were calculated for the exemplary data. Applying the method based on the lowest cost allows finding more than one location of machinery yard. The cost of applying more than one yard can reduce much more the costs of construction site.

6

Wyznaczanie optymalnego położenia obiektu logistycznego

Kijek A., Mitkow S.

Logistyka

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2014

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nr 6

PL

W artykule przedstawiono zastosowanie metody euklidesowej do określenia położenia obiektu logistycznego przy możliwie najniższych kosztach przewozu. Ukazane zostały jej założenia oraz metodyka postępowania. Ponadto przedstawiono jej praktyczne wykorzystanie za pomocą arkusza kalkulacyjnego Ms Excel. Dla porównania wyników wyznaczono także współrzędne nowego obiektu logistycznego wykorzystując metodę współrzędnych prostokątnych.

EN

The article shows the euclidean method to determine the position of the logistics object at the lowest possible cost of transport. Article shown assumption and methology of the proceedings. In addition, it presents the practical use of the method by using the Ms Excel spreadsheet. For comparison the results, in article also determined the coordinates of the new logistics facility using the rectangular coordinates method

7

Operational comparison of a new FACTS controller (RHFC) with other FACTS devices considering modified steady-state model

Kazemi A., Rezaeipour R., Tayebi M.

Przegląd Elektrotechniczny

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2012

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R. 88, nr 7a

54-58

EN

In this paper, optimal power flow (OPF) is applied to optimally locate Rotary Hybrid Flow Controller (RHFC) and three other Flexible AC Transmission System (FACTS) devices to optimize the total fuel cost, power losses and system loadability as objective functions. The steady-state model of FACTS controllers are developed as a power injection model. A quantitative comparison of them are also investigated from economical and technical point of view. Simulations are performed on IEEE 14-bus and 118-bus test systems using Matlab and GAMS software environments.

PL

W artykule opisano strategię optymalnego przepływu mocy OPF uzyskaną przez zastosowanie układu RHFC (Rptary Hybrid Flow Controller) oraz urządzeń systemu FACTS. Osiągnięto optymalne: koszt paliw, straty mocy i obciążalność.

8

Suppression of vibration with optimal actuators and sensors placement

Starek L., Starek D., Solek P., Starekova A.

Archives of Control Sciences

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2010

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Vol. 20, no. 1

99-120

EN

It is proposed to place the actuators to maximize the mean value of energy transmitted from or dissipated by the actuators, while the sensor location should maximize the mean square value of system output, which also maximizes the signal-to-noise ratio. By using explicit expressions for controllability and observability grammians as well as modal energies, it is shown that the approaches based on the system responses to transient and persistent disturbances are closely related, and are equivalent for structures which damping is small and the natural frequencies of which are well spaced. The method of actuator and sensor optimal location via grammians was proposed and compared it with results given by the method of matrix norms.

9

Optymalne usytuowanie kolektora słonecznego

Basińska M., Bobryk Ł., Koczyk H.

Ciepłownictwo, Ogrzewnictwo, Wentylacja

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2007

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R. 38, nr 1

26-30

PL

Celem artykułu jest określenie optymalnej lokalizacji kolektora słonecznego opisanej poprzez kąt jego pochylenia i kierunek względem stron świata, przy zastosowaniu metody nieba izotropowego i anizotropowego. Podstawą analiz są dane całkowitego promieniowania słonecznego na powierzchnię poziomą uzyskane na stanowisku pomiarowym klimatu zewnętrznego Politechniki Poznańskiej w roku 1997 [1].

EN

The aim of the paper is to found the optimal location of a solar collector. The location is determined by the direction and inclination angle of the collector, in relation to the four cardinal points, by using the method of isotropic sky and aniso-tropic sky. The basis of the analyses is the data, concerning the total solar radiation on a horizontal surface, obtained in 1997at a measuring stand of external climate in Poznan University of Technology [1].

10

Combination and genetic algorithms for the locations and tuning of robust power system stabilizers

Sebaa K., Boudour M.

Archives of Control Sciences

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2007

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Vol. 17, no. 2

145-162

EN

Combinations and Genetic Algorithms for the Locations and tuning of Robust Power System Stabilizers (PSS's) is presented in this paper. The PSS parameters and locations are computed to assure maximum damping performance under different operating conditions. The efficacy of this technique in damping local and inter-area modes of oscillations in multimachine power systems is confirmed through nonlinear simulation results and eigenvalues analysis.