Influence of the Thread Profile Accuracy on Contact Pressure in Oil and Gas Pipes Connectors

Onysko, Oleh; Kopei, Volodymyr; Medvid, Iuliia; Pituley, Lolita; Lukan, Tetiana

doi:10.1007/978-3-030-50794-7_42

Cited by 21 publications

(11 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The problems of stress concentration in shell systems under conditions of contact interaction while complex loading were considered in [49][50][51]. When designing such equipment, engineers pay special attention to the accuracy and tightness of threaded joints [52][53][54], increasing thread [55][56][57] and preventing self-unscrewing of threaded joints [58,59].…”

Section: State Of the Current Development Of The Problem And Formulating A Research Taskmentioning

confidence: 99%

Strategy of Compatible Use of Jet and Plunger Pump with Chrome Parts in Oil Well

et al. 2021

View full text Add to dashboard Cite

During oil fields operation, gas is extracted along with oil. In this article it is suggested to use jet pumps for utilization of the associated oil gas, burning of which causes environmental degradation and poses a potential threat to the human body. In order to determine the possibility of simultaneous application of a sucker-rod pump, which is driven by a rocking machine, and a jet pump (ejector) in the oil well, it is necessary to estimate the distribution of pressure along the borehole from the bottomhole to the mouth for two cases: when the well is operated only be the sucker-rod pump and while additional installation of the oil-gas jet pump above its dynamic level. For this purpose, commonly known methods of Poettman-Carpenter and Baksendel were used. In addition, the equations of high-pressure and low-pressure oil-gas jet pumps were obtained for the case, when the working stream of the jet pump is a gas-oil production mixture and the injected stream is a gas from the annulus of the well. The values which are included in the resulting equations are interrelated and can only be found in a certain sequence. Therefore, a special methodology has been developed for the practical usage of these equations in order to calculate the working parameters of a jet pump based on the given independent working parameters of the oil well. Using this methodology, which was implemented in computer programs, many operating parameters were calculated both for the well and for the jet pump itself (pressures, densities of working, injected and mixed flows, flow velocities and other parameters in control sections). According to the results of calculations, graphs were built that indicate a number of regularities during the oil well operation with such a jet pump. The main result of the performed research is a recommendation list on the choice of the oil-gas jet pump location inside the selected oil well and generalization of the principles for choosing the perfect location of such ejectors for other wells. The novelty of the proposed study lays in a systematic approach to rod pump and our patented ejector pump operation in the oil and chrome plating of pump parts. The result of scientific research is a sound method of determining the rational location of the ejector in the oil well and the calculation of its geometry, which will provide a complete selection of petroleum gas released into the annulus of the oil well. To ensure reliable operation of jet and plunger pumps in oil wells, it is proposed to use reinforcement of parts (bushings, plungers, rods, etc.) by electrochemical chromium plating in a flowing electrolyte. This has significantly increased the wear resistance and corrosion resistance of the operational surfaces of these parts and, accordingly, the service life of the pumps. Such measures will contribute to oil production intensification from wells and improve the environmental condition of oil fields.

show abstract

Section: State Of the Current Development Of The Problem And Formulating A Research Taskmentioning

confidence: 99%

Strategy of Compatible Use of Jet and Plunger Pump with Chrome Parts in Oil Well

et al. 2021

View full text Add to dashboard Cite

show abstract

“…The dependences of the contact pressure and the fatigue safety factor on the major diameter of the pin thread were studied in [22]. In [23], the contact pressures at the time of insertion of the pin into the box are investigated based on theoretical assumptions about the effect of the weight of the drill pipe stand. There are no studies of the influence of the working height of the profile h on the strength indicators.…”

Section: Literature Reviewmentioning

confidence: 99%

Influence of Working Height of a Thread Profile on Quality Indicators of the Drill-String Tool-Joint

Kopei

Onysko

Panchuk

et al. 2021

Lecture Notes in Mechanical Engineering

Self Cite

View full text Add to dashboard Cite

Drilling oil and gas wells is always accompanied by the process of screwing and unscrewing the drill-pipe connector. Its effectiveness largely depends on the accuracy and quality of the thread profile, including the profile height's accuracy. Studies show a decrease in the contact pressures and stresses between the threaded surfaces of the box and the pin of the drill string tool-joint as the working height of the profile increases. It is a positive factor influencing the durability and reliability of the drill pipe connector. On the other hand, the same increase of the working height leads to the improvement of the screwing process itself, which is an integral part of lowering and lifting operations during the operation of drill strings. The increased contact area allows the joint to handle high make-up torques without damaging the thread profile. It is also advisable to consider the design of the roots not of around but of an elliptical profile. To ensure leak-tightness and fatigue strength, the operation of joints with a reduced value of h should be avoided.

show abstract

“…Для покращення експлуатаційних властивостей бурильного інструмента застосовують низку методів. До конструкторських методів відносять удосконалення конфігурації бурильних труб [3,4], нарізних з'єднань [5][6][7], забезпечення точності нарізей [8][9][10] та запобігання самовідгвинчуванню [11], раціональний вибір матеріялів шляхом проведення корозійних досліджень і вивчення структурних змін металів [12][13][14], параметричну оптимізацію озброєння, опор і вузлів промивання доліт [15][16][17] тощо. Серед технологічних методів заслуговують на увагу раціональне армування сталевих деталей [18], оптимізація формоутворення гвинтових поверхонь та поверхонь складної топології [19,20], нанесення гнучких [21,22], металевих [23][24][25] та функціонально ´радієнтних [26][27][28] покриттів, зокрема оксидних [29], а також шліфування і лазерна обробка робочих поверхонь нарізей [30,31].…”

Section: вступ і постановка задачі дослідженняunclassified

Experimental Estimation of Design and Drilling Regime Option Influence on Drilling Tool Dynamics

Moysyshyn¹,

Lyskanych²,

Borysevych³

et al. 2021

Metallofiz. Noveishie Tekhnol.

View full text Add to dashboard Cite

За результатами експериментальних досліджень, проведених на буровому стенді, встановлено емпіричну залежність між коливаннями сталевого бурильного інструмента та його конструктивними і режимними чинниками. За досліджуваний параметр коливань вибрано середнє квадратичне відхилення (стандарт) вібропришвидшення, що реєстрували на траверсі стенда, тобто після пристрою зміни жорсткості та демпфування, який входить до складу компонування бурильного інструмента. До конструктивних чинників віднесено жорсткість та коефіцієнт демпфування згаданого пристрою, а до режимних чинників віднесено осьове статичне навантаження та частоту обертання сталевого тришарошкового долота. Постійними факторами під час проведення експерименту були тип і діаметр сталевого тришарошкового долота та витрата промивальної рідини. Для одержання емпіричних залежностей обрано метод раціонального планування експериментів, відповідно до якого кожна комбінація змінних чинників під час досліджень зустрічається тільки один раз. Планований факто-

show abstract

Influence of the Thread Profile Accuracy on Contact Pressure in Oil and Gas Pipes Connectors

Cited by 21 publications

References 17 publications

Strategy of Compatible Use of Jet and Plunger Pump with Chrome Parts in Oil Well

Strategy of Compatible Use of Jet and Plunger Pump with Chrome Parts in Oil Well

Influence of Working Height of a Thread Profile on Quality Indicators of the Drill-String Tool-Joint

Experimental Estimation of Design and Drilling Regime Option Influence on Drilling Tool Dynamics

Contact Info

Product

Resources

About