The task of increasing the reliability of well surface equipment at the stage of secondary production methods has been considered to increase operational reliability, the problems of which are key in the energy security of the state and which is considered as a complex property of the oil and gas industry system and is defined as the ability to prevent dangerous situations to human health and the environment. The purpose of the study is to find general patterns in the development of methods for calculating the local value of the intensity of accidents in the section of the pump-compressor pipe column, despite their different operating conditions. The risk assessment has been implemented based on a methodical system approach, which involves the procedure of dividing the tubing string into particular sections 1) with the determination of the expected intensity of accidents in each of them; 2) taking into account the finite set of all factors, for each of which a set of its possible values, which differ according to the "intensity" of its impact (directly or indirectly) on the specific frequency of accidents. Influence factors values are given by qualitative indicators, transformed into corresponding values expressed in evaluation points. The breakdown of the tubing string into sections is carried out sequentially and independently according to each of the influence factors, the criterion for determining the border location of the next section when dividing the column according to each factor is a jump-like change in its value. As a result, the proposed method, the calculation of the local values of accident intensity for each section of the column, makes it possible to obtain the distribution of the specific accident frequency along the length of the string. The obtained dependence has been proposed to be used as a theoretical basis for developing and improving methods for calculating the intensity of accidents during the operation of oil and gas equipment
Received 15.04.2022
Revised 09.06.2022
Accepted 31.08.2022
[1] Molchanov A. G., Chicherov L. G. Neftepromyislovyie mashinyi i mehanizmyi. M.: Nedra, 1983. 308 p. [in Russian]
[2] Nasliednikov S. V. Doslidzhennia kinematyky udoskonalenoi konstruktsii ustatkuvannia dlia vydobuvannia nafty. Materialy Mizhnarodnoi naukovo-tekhnichnoi konferentsii «Problemy i perspektyvy transportuvannia nafty i hazu»; IvanoFrankivskyi natsionalnyi tekhnichnyi universytet nafty i hazu. Ivano-Frankivsk. 15-18 travnia 2012. P. 172-175. [in Ukrainian]
[3] Virnovskiy A. S. Teoriya i praktika glubinnonasosnoy dobyichi nefti. Izbrannyie trudyi. M.: Nedra, 1971. P. 184. [in Russian]
[4] Shulga V.G., Buslenko E. I. Ustevoe oborudovanie neftyanyih i gazovyih skvazhin: Spravochnaya kniga. M.: Nedra, 1978. 235 p. [in Russian]
[5] Boiko V. S. Rozrobka ta ekspluatatsiia naftovykh rodovyshch. K.: Real Print, 2004. 695 p. [in Ukrainian]
[6] UA 50094A MPK E21V17/02. Ziednannia stalevoi holovky z polimerno-kompozytsiinym tilom nasosnoi shtanhy / Kryzhanivskyi Ye.I., Kopei B.V., Steliha I.I., Kopei V.B. 15.10.2002, Biul. No 10, 2002. [in Ukrainian]
[7] Hrudz V. Ya., Nasliednikov S.V. Sverdlovynne ustatkuvannia dlia vyrobky zapasiv vuhlevodniv i metodyka yoho rozrakhunkiv. Rozvidka ta rozrobka naftovykh i hazovykh rodovyshch. 2011. No 1(38). Р. 12-16. [in Ukrainian]
[8] Mannan M., Pfenning Dw., Zinn D. Rick – analysis procedures ensure system safety. Oil and Gas Jun 3, 1991. Vol.8 9. No 22. P.83 – 87.
[9] Kopey B., Kopey V. Cost analysis of fiberglass sucker rods. 13th International Scient.-Techn. Confer. “New methods and technologies in petroleum geology, drilling and reservoir engineering”, Cracow, 20-21 June, 2002. Vol. 2, P. 31-36.
[10] Kopey B.V., Kopey I.B., Maksymuk A.V., Shcherbyna N.M. Development of steel head joints with fiberglass sucker rod on the base of contact stresses investigation. Int. Symp. Fatigue Design1998, Espoo, Finland, 26-29 May, 1998, Vol. II, P. 603-612.
[11] Moyer M. C., Dale B. A., Kusenberger F.N. An automated tool-joint inspection device for the drillstring. J. of Petroleum Technology, 1984, Vol. 36, No 7. P. 982-986.
[12] Peterson G., Mansholt F. Erforschungen mit Bohrstangen bei ubertiefe Bohrungen. Erdol und Kole Erdgas, Prtrochemie. 1969. No 8. P. 455-459.