Vol. 12 3, 2022 p 239 - 249


Article name, authors, abstract and keyword


Viscoplastic oils shear pressure calculation in a profiled pipeline

Vladimir V. Zholobov a, Valery Yu. Moretsky a, Rustyam F. Talipov a

a The Pipeline Transport Institute, LLC (Transneft R&D, LLC), 47a Sevastopolsky Prospect, Moscow, 117186, Russian Federation

DOI: 10.28999/2541-9595-2022-12-3-239-249

Abstract: Pipeline start after shut-off can be connected with essential difficulties, especially in case of pumping non-Newtonian oils with complicated rheology. This is caused by the fact that during oil cooling (during shut-off) the starting pressure defined through shear stress can exceed allowable pressure values in the pipeline linear portion and/or allowable head at the oil transfer pumping station outlet. Normally, when evaluating oil temperature distribution over the pipeline axis, temperature variation in radial direction is neglected, and average oil temperature in each route point is used. At that consideration of this parameter shall increase the definition accuracy for the shear stress, starting pressure and time of pipeline safety shut-off. In this paper hydraulic statement and partial solution of the base system of equations in the form of a single-direction running wave are used for description of the initial stage of shutdown hot pipeline start. The problem statement incorporates consideration of temperature radial distribution, non-Newtonian oil rheology and its structuring transient kinetics. In comparison with a quasi-static shear pressure, which is identified with the minimum pressure of shutdown hot pipeline start, it is offered to consider the pressure in the initial section of the single-direction running wave.

Keywords: viscous oil, viscoplastic oil, shear stress, starting, oil pipeline start, safe shut-off time, oil temperature, Cauchy problem

For citation:
Zholobov V. V., Moretsky V. Yu., Talipov R. F. Viscoplastic oils shear pressure calculation in a profiled pipeline. Science & Technologies: Oil and Oil Products Pipeline Transportation. 2022;12(3):239249. https://doi.org/10.28999/2541-9595-2022-12-3-239-249

[1] Cheng X., Bo Y., Zhengwei Z., Zhang J., Wei J., Sun S. Numerical simulation of a buried hot crude oil pipeline during shutdown. Petroleum Science. 2010;7(1):7382. (In Russ.)
[2] Kokhov T. A. Topological-heuristic computational algorithms and a set of programs for optimizing energy resource efficiency of tracing heating systems for complex technological [dissertation of Cand. Sci. (Eng.)]. [oscow]: Mendeleev University of Chemical Technology; 2018. 204 p. (In Russ.)
[3] Zholobov V. V., Moretskiy V. Yu., Talipov R. F. On the question of determining the pressure at the initial stage of starting a stopped hot oil pipeline. Pipeline Transport of Hydrocarbons: Materials of the 4th All-Russian Scientific-Practical Conference; 2020 October 30 Omsk, Russian Federation. Omsk: OmSTU Publ.; 2020. P. 8689. (In Russ.)
[4] Gubin V. E., Gubin V. V. Pipeline transportation of oil and oil products. Moscow: Nedra Publ.; 1982. 296 p. (In Russ.)
[5] Lykov . V. Thermal conductivity theory. oscow: High School Publ.; 1967. 600 p. (In Russ.)
[6] Brovkin L. A. Temperature fields of bodies during heating and melting in industrial furnaces. Ivanovo: IEI them. Lenin Publ.; 1973. 364 p. (In Russ.)
[7] Kartashov E. M. Analytical methods for solving the problems of unsteady thermal conductivity in areas with moving borders (review). Injenerno-fizicheskiy zhurnal = Engineering and Physical Journal. 2001;74(2):171195. (In Russ.)
[8] Tyan V. K., Pimenov A. V. Comprehensive study of solidified paraffin oil shear process in a pipeline. Herald of Samara State Technical University. Series: Technical Sciences. 2013;21(4):218221. (In Russ.)
[9] Tyan V. K., Degtyaryov V. N., Tyan P. V., Pimenov A. V. Mathematical modelling of congelation paraffin oil in transit on pipes. Izvestia of the Samara Research Center of the Russian Academy of Sciences. 2009;11(5):358361. (In Russ.)
[10] Chernikin V. I. Pumping of high-viscosity and congealing oils. Moscow: Gostoptekhizdat Publ.; 1958. 164 . (In Russ.)
[11] finogentov . ., Degtyarev V. N., Pimenov A. V. Hydrodynamic analysis of trunk oil pipelines. Neftyanoe khozyaystvo = Oil Industry. 2015(6):9699. (In Russ.)
[12] Nekuchaev V. O., Lyapin A. Y., Mikheev M. M. Methods and results of static shear stress study of Timan-Pechora Province waxy crude oils using a controlled shear rate rheometer. SOCAR Proceedings. 2018(4):1825. (In Russ.)
[13] Didenko V. S., Degtyarev V. N. Study of the conditions for the launch of an oil pipeline with frozen oil. Neftyanoe khozyaystvo = Oil Industry. 1977(3):4447. (In Russ.)
[14] Rayner M. Reology. Moscow: Nauka Publ.; 1965. 224 p. (In Russ.)
[15] Barnes H. A. The yield stress myth? revisited. Theoretical and Applied Rheology. Proceedings of the XI International Congress on Rheology; 1992 August 1721 Brussels, Belgium. 1992(2):576578.
[16] Scott Blair G. W. The success of Cassons equation. Rheologica Acta. 1966;5(3):184187.
[17] Suleymanov V. A. Assessment of safe shutdown time for a pipeline, which pumps high-stiffening oil. Vesti Gazovoy Nauki: scientific and technical collection book. 2018(2):3643. (In Russ.)
[18] Tugunov P. I., Novoselov V. F., Golyanov A. I. Cooling of oil and petroleum products in underground pipelines. Oil Products and Raw Hydrocarbons Transportation and Storage. 1968(3):1518. (In Russ.)
[19] Kazubov A. I., Scherbakov S. G., Chernikin V. I. Pumping viscous high-frozen oils with heated. Transportation and Storage of Oil and Oil Products. 1965(7):37. (In Russ.)
[20] Garris N. ., Garris Y. ., Glushkov . . Definition of the dynamic characteristics of the main pipeline (model for viscoplastic liquids). The electronic scientific journal Oil and Gas Business. 2004. No. 1 [accessed 2019 January 30]. http://www.ogbus.ru/authors/Garris/Garris_4.pdf. (In Russ.)
[21] Sestak J., Charles M. E., Cawkwell M. G. Start-up of gelled crude oil pipeline. Journal of Pipelines. 1987(6):1524.
[22] Ginzburg I. P. Applied hydro- and gaseous dynamics. Leningrad: Leningrad University Publ.; 1958. 338 p. (In Russ.)
[23] Loitsanskii L. G. Liquid and gas mechanics. Moscow: Drofa Publ.; 2003. 840 p. (In Russ.)
[24] Kutukov S. E., Chetvertkova . V., Golyanov A. I. Q H characteristics for heavy crude oil pipeline. Science & Technologies: Oil and Oil Products Pipeline Transportation. 2021;11(1):3239. (In Russ.)
[25] Zholobov V. V., Varybok D. I., Moretskiy V. Y. Simple wave equations to describe flow of low compressible hydrocarbon liquid in elastic cylinder pipes. Science & Technologies: Oil and Oil Products Pipeline Transportation. 2011(2):4447. (In Russ.)