IMPROVING THE EFFICIENCY AND RELIABILITY OF OPERATION OF TURBO-GAS COMPRESSOR EQUIPMENT FOR PETROLEUM ASSOCIATED GAS COMPRESSION

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Published: Sunday, 12 February 2023 18:00
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Volume 13 (1), February 2023, Pages 28-34

Arzu Gasanova1, Natella Sadikhova2, Tebib Temurov3

1Senior research associate, Institute of Control Systems Ministry of Science and Education of A.R. Candidate of Technical Science, Azerbaijan. Email id:  This email address is being protected from spambots. You need JavaScript enabled to view it.

2Research associate, Institute of Control Systems Ministry of Science and Education of A.R. Azerbaijan. Email id:  This email address is being protected from spambots. You need JavaScript enabled to view it.

3Oil production engineer, SOCAR “Azneft” production union. Operation department and gas reservoirs. Azerbaijan. Email id:  This email address is being protected from spambots. You need JavaScript enabled to view it.

ABSTRACT   

 In recent years, the oil and gas and other industries have been increasingly used turbo-gas compressors (TGC). Prospects for use of TGC at compression stations (CS) is associated with their large motor resource, energy consumption and autonomy that do not require additional energy supply.

The present paper is devoted to the creation of booster compressor stations with high reliability to ensure uninterrupted operation that meets high standards. In this connection, the collection of associated low-pressure petroleum gas for compressing and transporting it to the shore was the most urgent task in the acute shortage of natural gas. The performed analysis of the literature published showed that a significant number of works were devoted to the problem of ensuring a high level of reliability of compressor units. At the same time, there are no statistical data on failures necessary for deep analysis, the reasons causing certain equipment failures have not been sufficiently studied.

This does not allow to provide the necessary level of reliability when upgrading the existing and designing new compressor units.

It also requires the solution of a number of other problems related to ensuring reliability at the stages of design and manufacture of units. When developing and creating a new generation of TGC at the design stage it is necessary to carry out appropriate calculations to ensure the future safe operation of CS. To carry out these calculations, it is necessary to develop new scientific approaches and mathematical models on the basis of which it is possible to obtain more reliable results about the behavior of TGC in future operation.

Similar calculations should be carried out for both existing and operating TGC in order to assess their suitability for work and to predict the life of the main working elements of TGC and CS in general.

Keywords: reliability, boost compressor stations (BCS), gas turbines, compressor units, operating time, failure.       

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ANALYSIS OF THE DESIGN OF THE SWELLING PACKER AND RESEARCH OF DAMAGE TO THE SEALING UNIT

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Published: Sunday, 12 February 2023 17:57
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Volume 13 (1), February 2023, Pages 19-27

Lale Haciyeva1, Nijat Mirzazada2

1Dosent, department of “Industrial Machines”, Azerbaijan State Oil and Industry University, candidate of technical sciences, Azerbaijan. E-mail: lala.hacıThis email address is being protected from spambots. You need JavaScript enabled to view it.

2Gas turbine and steam turbine units operator, Azerenerji OJSC, graduate student, Azerbaijan State Oil and Industry University, Azerbaijan.  E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.   

ABSTRACT

 The article provides a distinctive analysis of swelling packers used in different countries, considers the classification of packers. The principles of functioning of both mechanical packers and hydraulic packers, as well as swelling packers, are briefly considered, and their difference in functioning, opening time and holding time relative to swelling packers is also described. The advantages of swelling packers over other packages are presented. The superiority and key aspects of sealing elements of specifically swelling packers relative to mechanical and hydraulic packers are described, since some rubber materials included in the sealing element have the ability to self-repair sealing properties. The stages of development, properties of elastomers, which are used in the sealing elements of the packer, are given. Protective anti-extrusion rings are described, which protects the sealing units and elements from the indentation of the elastomer. The description of the varieties of swelling packers, the process of swelling, the advantages and disadvantages of swelling packers is given. The damage to the rubber of the sealing assembly of the swelling packer after testing in the well was analyzed. The elastomer of the sealing unit has been tested using various methods. The method of infrared spectroscopy revealed the approximate type of material and a change in the structure. Changes in the physicomechanical values of the rubber seal before and after thermo-oxidative aging are determined. The strength of the rubber polymer part of the packer from the effects of aggressive media was determined.

Keywords: swelling packer, sealing unit, elastomer element, damage, mechanical packer, destruction, hydraulic packer, pressure, temperature.

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THE STUDY OF THE CAUSE OF FAILURE OF THE MAIN ELEMENTS OF THE CHIRTMAS TREE AND EFFECTIVE SOLUTION WAYS

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Published: Sunday, 12 February 2023 17:53
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Volume 13 (1), February 2023, Pages 10-18

Zenfira Huseynli1, Calal Babazade2

1Associate professor, department of “Industrial Machines”, Azerbaijan State Oil and Industry University, phd in technical sciences, Azerbaijan. Email id: This email address is being protected from spambots. You need JavaScript enabled to view it.

2Mechanical Engineer, Wellmechs Electromechanical Company. Master, "Industrial machinery" Department, Azerbaijan State Oil and Industry University, Azerbaijan. Email id: This email address is being protected from spambots. You need JavaScript enabled to view it.         

ABSTRACT

 The article is devoted to the study of the causes of failures of fountain fittings in the process of operation, the measures taken to eliminate failures, increase efficiency and increase the overhaul period. İn order to improve the efficiency of the fountain fittings, the works that can be performed during major and current repairs are investigated. The main purpose of this article is to increase the reliability of the design of the fountain fittings.

This article explores the causes of failure that may occur in wellhead christmas trees, their causes and solutions. The general design of x-mas trees is shown. Basically, christmas tree fittings are cross-shaped, three-necked and, depending on the design, for a working pressure of 21, 35, 70, 105, 140 MPa.

x-mas trees perform the main and most important work, such as hanging tubing, shutting off the wellhead, providing the necessary pressure on the wellhead, and regulating oil production. As is known, during the operation of oil and gas wells, along with the main product, clay, sand and abrasive particles are removed from the well. Among these impacts, christmas trees are exposed to the corrosive attack of sand flowing with oil, gas and water during operation. It is the cross and the connecting elements of the x-mas tree - closing valves, the cross, the christmas tree, a pair of gates - saddles, the sealing elements that are most susceptible to eating (wear). Due to the fact that these processes occur under high pressure, a number of important requirements are imposed on the design of x-mas trees. İmproving the design of x-mas trees, which is wellhead equipment, is always one of the most important tasks in operation. In order to improve the efficiency of x-mas trees, the works that can be performed during major and current repairs have been studied. The main purpose of this article is to study the improvement of the reliability indicators of the x-mas tree design, increase the overhaul period.

Key words: Christmas tree, stem, valve, globe valve,packing element, shut-off valve, disc - saddle pair.

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ENSURING ACCURACY OF PLASTIC DETAILSOF OILFIELD EQUIPMENT

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Published: Saturday, 12 November 2022 09:26
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Volume 12.1 (4), November 2022, Pages 33-32

Naila Gasanova

Assistant professor, doctor of technical sciences, Azerbaijan State Oil and Industry University, Azerbaijan. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

ABSTRACT

Inthe manufacture of details from plastic, progressive technological processes are in most cases applied: pressing, casting under pressure, injection pressing, etc. Plastic details are widely used in oilfield equipment. Plastic details are used for the manufactureof bearing sleeves, flywheels, connecting rods, gears and other parts. The ever-increasing application of plastic details in oilfield equipment necessitates the fullest possible coverage of all issues related to the actual accuracy of manufacturingdetails of plastic.

Keywords:details from plastic, pressing, casting under pressure, injection pressing, summary error, technological regimes.

SYNERGETIC EFFECT OF STRENGTHENING POLYMER NANOCOMPOSITES

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Published: Sunday, 12 February 2023 17:49
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Volume 13 (1), February 2023, Pages 04-09

Oleg Dyshin1, Ibrahim Habibov2, Arzu Suleymanova3

1Senior Researcher, Research Institute "Geotechnological Problems of Oil, Gas and Chemistry", Azerbaijan.

Email id: This email address is being protected from spambots. You need JavaScript enabled to view it. ORCID: https://orcid.org/0000-0003-1530-8481

2Professor, Director of the design center “Engineer”, Azerbaijan State Oil and Industry University, Doctor of technical sciences, Azerbaijan. Email id: This email address is being protected from spambots. You need JavaScript enabled to view it.. https://orcid.org/0000-0003-3393-7812

3Teacher, Department of Industrial Machines, Azerbaijan State Oil and Industry University, Azerbaijan.

Email id:  This email address is being protected from spambots. You need JavaScript enabled to view it. ORCID: http://orcid.org/0000-0002-0679-1865

 

ABSTRACT

 According to the cluster model of glassy polymers, in the amorphous state they are natural nanocomposites of two components of a loosely packed matrix and nanoclusters immersed in it, respectively playing the role of a matrix and filler in a natural composite. In this interpretation of the polymer, an important role is played by the dimensional effect of nanoclusters, identical to the specified effect of a nanofiller in an artificial nanocomposite, namely, a decrease in the size of both nanoclusters and dispersed particles leads to a sharp increase in the degree of amplification (modulus of elasticity) of the nanocomposite.

In this paper, using parallel and sequential microcomposite models, upper and lower fractal estimates for the elastic modulus of the matrix are obtained and the synergistic effect of strengthening the elastic modulus of the nanocomposite as a whole as a superposition of the amplification effects from inorganic filler and from nanoclusters playing the role of filler of the loosely packed matrix is quantified.

The object of research in this work is a packer - a device designed to disconnect two zones of the borehole and isolate the internal space of the production column from the impact of the borehole environment. The tightness of the packages is achieved thanks to sealing elements (SE), for the manufacture of which a composite with the composition is used: a mixture of synthetic butadiene nitrile and hydrogenated butadiene nitrile rubber (BNC + HBNC), vulcanizer, stabilizer, technological additives and copper nanoparticles.

For the class of polymers under consideration, a rule has been developed for choosing the most preferred model from the above two micromechanical models at a given temperature.

Keywords: oilfield equipment, synergetic effect, cluster model, natural nanocomposite, interfacial region, inter-component adhesion, loosely packed matrix.

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ENSURING ACCURACY OF PLASTIC DETAILSOF OILFIELD EQUIPMENT

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Published: Saturday, 12 November 2022 09:26
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Volume 12.1 (4), November 2022, Pages 33-32

Naila Gasanova

Assistant professor, doctor of technical sciences, Azerbaijan State Oil and Industry University, Azerbaijan. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

ABSTRACT

Inthe manufacture of details from plastic, progressive technological processes are in most cases applied: pressing, casting under pressure, injection pressing, etc. Plastic details are widely used in oilfield equipment. Plastic details are used for the manufactureof bearing sleeves, flywheels, connecting rods, gears and other parts. The ever-increasing application of plastic details in oilfield equipment necessitates the fullest possible coverage of all issues related to the actual accuracy of manufacturingdetails of plastic.

Keywords:details from plastic, pressing, casting under pressure, injection pressing, summary error, technological regimes.

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