INCREASING THE FLUSHING SAFETY OF THE DRILLING PROCESS AND THE PERFORMANCE OF SEALING ELEMENTS OF BLOW OUT PROTECTION EQUIPMENT

Volume 13 (1), February 2023, Pages 74-82

Zenfira Huseynli1, Konul Aliyeva2


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.

2Master, "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 choice of the most effective control of technological processes for the prevention and elimination of gas, oil and water intrusions based on establishing the reliability, performance and durability of blowout control equipment. In this regard, the technical condition of the sealing elements of rams preventers, which generally meet all the requirements for the normal performance of blowout safety tasks, is of paramount importance.In order to evaluate and predict the performance and durability of the ram preventer's sealing elements, the basis for conducting experimental studies of their technical condition should be developed.To develop the basis for conducting experimental studies of the technical condition of the sealing elements of ram preventers in order to assess and predict their performance and durability. In this regard, for research, the main parts and components of the stand for testing standard drilling oilfield equipment were developed and manufactured. Structurally, the stand consists of two test wells with a depth of 2000 and 2500 meters, respectively. The structure of the wellhead equipment of each well includes a casing head with installed anti-blowout equipment (ram and annular hydraulic preventers together with a hydraulic drive station). A standard drilling rig and a rig for running a drill string into a pressurized well are installed at the test wellheads. In addition, the stand includes specially designed and manufactured additional components and assemblies: pumping units, suction and discharge manifolds, a circulation system equipped with a number of additional devices and mechanisms, etc. Moreover, an integrated hardware and software complex has been developed specifically for the stand for monitoring and recording information during experimental studies. This complex ensured fast processing of the results of experimental studies on a computer, reliable storage and retrospective access to data, quick readjustment and the possibility of parallel work with several test objects. It is a guide for the experimental study of the productivity and durability of the sealing elements of ram preventers and provides a set of measures for determining the technical condition of BOP during operation based on objective indicators.

Keywords: Blowout preventer, ram, preventer, sealing element, heavy-duty.


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IMPLEMENTATION AND RESEARCH OF INTELLIGENT INFORMATION RETRIEVAL AND DATA ANALYSIS IN WEB APPLICATIONS

Volume 13 (1), February 2023, Pages 65-73

 Nijat Babayev


PhD student on Systematic analysis, management and information processing specialization, Azerbaijan State Oil and Industry University. Email id: This email address is being protected from spambots. You need JavaScript enabled to view it.  https://orcid.org/0000-0001-5302-4338


ABSTRACT

 The main stages of Web-Mining were described, the main difference between information extraction and information retrieval was highlighted in the article. The contents of Web Content Mining (extraction of Web content), Web Structure Mining (extraction of Web structures), and Web Usage Mining (analysis of the use of Web resources) have been clarified separately.

 In the section entitled “Information systems for Data Mining and processes in Web Applications”, it was shown that when using Web Mining, developers face several types of challenges.

Also, the main approaches to conducting intelligent search of information and data analysis in web applications were discussed in the article. The components of the Data Mining model and the stages of its application was considered. As a practical example of the implementation of a software product for research, Russian development - the program PolyAnalyst was considered.

It was also noted that the professional version of the system - PolyAnalyst Pro allows us to analyze various data formats and optimize business processes. The system performs a full range of data analysis tasks: loading, combining, cleaning and transforming data, deep text analysis, extracting information, visualizing results and creating reports.

In the conclusion part it was noted that to improve the efficiency of work in real time, the creation of new software tools using Web Mining can bring maximum benefits. Building such intelligent analyzers can help analyze log files efficiently.

Keywords: Web Mining, Data Mining, Web applications, information retrieval, Web resources.


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STUDY OF SELF-DRYING EFFECT OF PACKER INSTALLATIONS IN EXPLOITATION WELLS

Volume 13 (1), February 2023, Pages 57-64

 Zenfira Huseynli1, Hamid Popal2


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.

2Credit specialist, Global Leasing ASC. 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 considers the effect of self-compacting of packer structures in production wells. In order to reduce the high costs of oil and gas companies, the issues of self-compacting packers in producing production wells are being studied. The design used here is centered in the open hole, and the rubber elements of the packers prevent leakage in the event of a pressure drop.

In general, the sealing assembly consists of a sealing surface, sealing elements, an auxiliary protective structure and a power mechanism. Under downhole conditions, the operating pipeline is not part of the seal assembly and varies from well to well. For this reason, the principle of operation of the packer's sealing unit cannot be justified from the point of view of the roughness of the sealing surface and the specified limits on the nature of the gas-liquid medium to be separated. This indicates that the operating conditions of the well packer are significantly different from the operating conditions of other sealing structures.

Despite the effectiveness of the use of packers, the low manufacturability of the sealing elements does not allow them to be widely used. Most often, this manifests itself in special difficult conditions, at the same time, in operating conditions, when the sealing material is broken, the rubber material flows onto the metal part of the packer, the rubber sticks to the wall of the production string, in some cases, tubing is captured. The performance of packer equipment is determined by the performance of its sealing elements. Since the sealing elements are mainly rubber-like construction materials, their design is unreliable in mountain conditions.

The packer is released into the well by tubing. When the required depth is reached, water is pumped into the packer barrel (through the NCU). In this case, the valve is connected to the fluid pressure in the packer hydraulic cylinder, and the piston moves, compresses the rubber cuffs through the support washer and delivers them to the inner surface of the working belt. He pushes the cone under the plates and thus shrinks the packer.

To drive the lower layer into the packer, the pressure is increased by an additional 3.5 MPa (23 ... 25 MPa from the landing pressure) and the mortise screws are cut off, the ball and seat are released from the packer. The packer channel opens. At this time, under the pressure of the well product (oil or gas), the round plates in the anchor are pressed against the belt, which prevents the packer from slipping upwards. To release the packer from the well, just pull it up. The packer consists of the mechanisms of the upper and lower devices, the clamping collar assembly, the saddle valve, the hydraulic cylinder, the circulation valve.

Relevance. The study of the shaping units of packer structures and the choice of criteria that provide the shaping effect is a topical issue.

Keywords: conditioning elements, wellbore, packer assembly, horizontal well, open hole staged fracturing.


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QUALITY STUDIES OF PLASTIC PARTS OILFIELD EQUIPMENT

Volume 13 (1), February 2023, Pages 45-50

Naila Gasanova1, Elmira Khalilova2


1Assistant professor, Azerbaijan State Oil and Industry University. Doctor of technical sciences, Azerbaijan Republic. Email id:  This email address is being protected from spambots. You need JavaScript enabled to view it.

2Master, Azerbaijan State Oil and Industry University.  Email id:  This email address is being protected from spambots. You need JavaScript enabled to view it.


ABSTRACT

 The article considers the quality of plastic parts of oilfield equipment depending on the modes of manufacturing their various designs and the composition of press materials. By adjusting the regime parameters in the manufacture of parts, quality indicators are determined: tensile strength, hardness of parts, and others. The use of parts made of plastic materials for the development of the oil field equipment industry can be considered efficient from a technical and economic point of view. Also, in order to improve the quality, strength and longevity, plastic masses, which are an alternative product to metals and non-metals, have started to be used. Studying the performance indicators of the used plastic materials is considered mandatory. The quality of details made of plastic masses depends on many factors, and the indicators of these factors appear during operation. The quality indicators of products made of plastic materials in oil field equipment are distinguished by the presence of unlimited possibilities, greater than structural materials. Parts made of such materials have high performance indicators and are used in the preparation of parts with different constructions using uncomplicated processing methods. For the development of the oil industry, ways to increase the durability and longevity of the equipment used in this industry should be investigated. Based on the results, an experimental-theoretical method for determining the main quality criteria (shrinkage deformation and other quality indicators, strength, hardness, surface roughness) of plastic parts is proposed. The developed technique for the design of plastic parts makes it possible to estimate the expected life of parts, taking into account their operating conditions.

Keywords: quality, plastic parts, press materials, performance, shrinkage.


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INVESTIGATION OF THE SEALING UNIT OF THE ANNULAR PREVENTER

Volume 13 (1), February 2023, Pages 51-56

Tamilla Khankishiyeva1, Musfiq Omarov2


1Assistant, "Industrial machinery" Department, Azerbaijan State Oil and Industry University, Candidate of technical sciences, Azerbaijan. Email id: This email address is being protected from spambots. You need JavaScript enabled to view it.

2Magistr, "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

In this article, different kinds of sealing aspects for something like an annular тpreventer are looked at. It was looked at how spherical and cone-shaped sealing elements are made. The advancement of spherical seals has been looked into based on what other countries were doing. The sealing parts that are presently used for spherical circumferential preventers aren't really universal and only work with a small number of drill pipes. They also can't completely seal the well mouth when there are no drilling tools in the well. A seal for a annular-type preventer is considered. The sealer includes a large number of metal inserts embedded in the elastomeric body. The inserts are arranged radially at equal distances from each other around the longitudinal axis of the seal. They support the elastomeric body under radial compression, which ensures the sealing of the annular space. When the sealing assembly is compressed around the drill pipe, the elastomeric body is compressed radially in the direction of the longitudinal axis. Metal inserts move in the same direction. The disadvantage of this design is that in the closed position, the pressure in the borehole can affect the elastomeric body, which leads to a change in its stress state. As a result, significant stresses develop in certain areas of the elastomeric body, acting on the sealing assembly in two directions: radially to the center and along the longitudinal axis upwards. At significant pressures of the reservoir fluid, stresses can lead to the destruction of the seal. An annular sealing element placed between the lid and the plunger of a spherical annular preventer has been studied. The element is installed in the spherical cavity of the lid and consists of an elastic material reinforced with rigid inserts. This design has a disadvantage associated with the wear of the working surfaces. When the tool is axially moved through a closed sealing element, a narrow belt of elastic material near the inner upper edge of the sealing element first wears out. Then, as it wears out, the width of the belt increases, reaching full height at the end.

Keywords: circular sealing element, cylindrical sealing element, strengthened metal inserts, elastomeric body, annular preventer.


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DEVELOPMENT OF RECOMMENDATIONS FOR IMPROVING THE INSTALLATION SUITABILITY OF PUMPING UNITS USED IN THE REPAIR AND RESTORATION WORK OF WELLS

Volume 13 (1), February 2023, Pages 35-44

 Farid Mammadov1, Lala Aliyeva2


1Master, Azerbaijan State Oil and Industry University, Azerbaijan. Email id: This email address is being protected from spambots. You need JavaScript enabled to view it.,

2Training master, department of “Industrial Machines”, Azerbaijan State Oil and Industry University, Azerbaijan.


ABSTRACT

 Oilfield pumping units are often subjected to a periodic full cyclein the performance of technological operations, namely: transportation., installation, operation of equipment and dismantling, for transportation and repetition of the entire cycle. For equipment located on mobile vehicles, periodic installation is characteristic.

At the same time, during the installation of oilfield equipment, deviations from technical conditions are characteristic, which lead to accelerated failures, their reliability and resources decrease.

To ensure a high level of installation suitability, it is required to have a specific concept, which is the concept of installation suitability.

The purpose of the work is to develop recommendations for improving the installation suitability of pumping units used in the repair and restoration work of wells.

Based on the results of the work carried out, it was concluded that the suitability for installation and manufacturability of installation are among the important indicators of processing oil and gas field equipment, significantly affecting reliability, labor productivity during maintenance, current and aggregate-node repairs; operating costs and efficiency of equipment use.

Keywords: installation suitability, testing, production, indicator, oilfield equipment.


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