UOT 665.7
Bayramova A. R.
senior laboratory assistant
Azerbaijan State Oil and Industry University, Baku, Azerbaijan
SOLUTIONS TO THE PROBLEMS INCREASING THE RELIABILITY OF DRILLING PIPES IN THE OIL INDUSTRY
Abstract
The purpose of this article is to eliminate the problems that arise during the operation of drill pipes. The main purpose of improving the longevity of equipment used in the oil industry is to conduct fundamental research to improve the equipment used in this process. The reliability of machines and mechanisms depends on the nature and cost of the impact load, the materials and structures of the joint parts, the quality of workmanship, operating conditions, etc. depends.
Keywords
Oil industry, operation, drill pipes, problem, installation.
Introductıon
The quantities used to assess reliability are also random. Therefore, the main regularities that characterize the reliability of drill pipes are also based on the theory of probabilistic and mathematical statistical laws based on statistical data[1].
It is known that the main reasons for the failure of many working wells are various categories of accidents that occur in the productive stratum and in the wells in operation. In addition to various holding tools, pipe-laying tools are used to eliminate accidents in wells. There are two types of pipes: internal and external. The occurrence of each accident depends on the state of the accident. The pipe is threaded right and left. During the overhaul of oil and gas pipelines, holding tools are used for different purposes according to their size and properties. These tools are combined by threading the outside and inside of the damaged pipes in the well and riveting the pipes in the same directions. It is easy to work with pipes when the end of the accident is normal. However, in most cases, the accident ends for various reasons. The end of the accident is 50 cm, sometimes incisions are made in the trunk downwards. In such cases, it is not possible to lift and hold the emergency pipe with existing pipelines. Cuts in the body of the accident pipe for various reasons lead to the expansion of its body. Pipes are available to lift emergency pipes to the wellhead. This is because the length of the existing pipe stock is short. To overcome these shortcomings, sharp and very strong teeth should be drilled on the inner lips, and these teeth should be made in the form of a hook to prevent slipping when lifting the pipe[2-4].
It is recommended to use an electromagnetic holder on the inside of the gears made on the lips to eliminate these shortcomings. The electromagnetic holder is placed on the inner surface of the gears and an insulated wire is pulled from the inside of the pipe to the upper surface, which is connected to the power supply. After holding the emergency tube through the holder, an electric current is applied to the wire to prevent the lip from slipping, and the electromagnet is activated here. Magnetization is obtained in the compressed part. This prevents the teeth of the pipe from slipping.
Machine-building enterprises use oil production with various equipment: drilling, pump-compressor and safety pipes; axes; provides connecting elements. One of such parts is oilfield couplings. Couplings with tapered grooves are widely used in the connection of oil pipes and various parts[5].
The design and technological features of couplings are that they have the same or different constructions (lock couplings) conical threads of different directions on both sides. Couplings with threads of the same design on both sides are more widely used. It is known that in the enterprises of our republic the processing of conical threads in such couplings is carried out at two points of the coupling on both sides. However, in these cases, the conical grooves deviate from the roughness, and as a result, the load-carrying capacity of the couplings decreases during operation.
To overcome these shortcomings, it is advisable to use manipulators that base the couplings next to the machines that thread the coupling.
As we know, at present, pipe-rolling plants use obsolete equipment on couplings. They do not get high quality. This also causes some unpleasant situations during operation. For example, when the couplings are placed by hand on the machine cartridge, the base on the outer surface of the coupling does not work properly. As a result, the straightness is broken when you groove the inner surface of the coupling.
When the couplings are placed on the cartridge with the proposed manipulator, the non-axiality is not obtained because the sanga mechanism presses the coupling parallel to the axis. In this case, the cutting of threads is in accordance with the standard. The scheme of the manipulator, which transfers the couplings to the cartridge of the machine, is shown in Fig. 1.
The method of one-sided machining of the inner surfaces of the couplings, including conical threads, has been proposed. In this case, to ensure high machining accuracy and efficiency, it is recommended to carry out machining on special machines where the angle of inclination between the axis of the spindle and the guide is equal to the angle of inclination of the conical threads φ and use special equipment. The disadvantage of this proposed method is that when performing grinding operations at an oblique angle, the errors on the deviation surfaces increase, as well as the same axis is violated during operation. This leads to an imbalance during rotation. To overcome this shortcoming, the problems arising in increasing the reliability of drill pipes during operation, which are copied on the sharp handle of the bolts, and their elimination, the installation of capers allows for flawless groove processing of both front and rear surfaces of couplings.
Figure 1 — The manipulator that bases the couplings on the cartridge of the machine. 1) muftakasan bench; 2) manipulator; 3) monorels; 4) rope; 5) bevel gears; 6) kalon; 7) reducer; 8) electric motor; 9) ready detail chair; 10) reclining chair; 11) control panel.
Result. It can be concluded from the research that the following measures should be taken in advance to increase the reliability of drill pipes during operation and to eliminate the problems encountered:
1. To lift the drill pipe to the wellhead, it is necessary to open sharp and very strong teeth on the inner lips and to prepare these teeth in the form of a hook to prevent slipping when lifting the pipe. In addition, an electromagnet should be used to increase its reliability;
2. To maintain the axial parallelism of the couplings on the inner surface, ensure that they are machined on the same base by means of manipulators. Making these changes is cheap and economically viable.
References
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РЕШЕНИЯ ПРОБЛЕМ ПОВЫШЕНИЯ НАДЕЖНОСТИ БУРОВЫХ ТРУБ В НЕФТЯНОЙ ОТРАСЛИ
Целью данной статьи является устранение проблем, возникающих при эксплуатации бурильных труб.Основная цель повышения долговечности оборудования, используемого в нефтяной промышленности, — проведение фундаментальных исследований по совершенствованию оборудования, используемого в этом процессе. Надежность машин и механизмов зависит от характера и стоимости ударной нагрузки, материалов и конструкций соединений, качества изготовления, условий эксплуатации и т. Д. зависит от.
Ключевые слова: нефтяная промышленность, эксплуатация, бурильные трубы, проблема, установка.
© Bayramova A.R., 2021