Experimental studies of operational properties of asphaltene-resin-wax deposits formed in oil trunk pipelines

##plugins.themes.bootstrap3.article.main##

##plugins.themes.bootstrap3.article.sidebar##

Published Aug 31, 2019
R. Z. Sunagatullin R. M. Karimov M. E. Dmitriev M. I. Baykova

Abstract

The paper presents the results of experimental laboratory studies of the properties of asphaltene-resin-wax deposits (ARWD) affecting the efficiency and reliability of pumping. The analysis of negative and positive properties of deposits, including corrosion impact of ARWD on the oil pipeline wall, was carried out. The thermal conductivity coefficient of heavy oil deposits samples taken from existing oil trunk pipelines (OTP) was measured. To assess the influence of the deposit layer on the smoothness of the inner surface of the pipe wall, tests were carried out to determine the roughness coefficient using the samples of pipe spool segments. The samples were cut from the sections of OTP under repair, the inner surface of which is covered with a layer of ARWD, accumulated and hardened during the long-term operation of pipelines, periodically affected by in-line cleaning pigs. The results of laboratory studies of the ARWD thermophysical properties confirmed the relatively high thermal insulation properties and smoothing ability of the deposit layer. Tests to assess the corrosion properties of ARWD showed the possibility of reducing the corrosion rate due to the passive protection of the deposit layer formed on the inner surface of the pipe wall.

How to Cite

1.
Sunagatullin RZ, Karimov RM, Dmitriev ME, Baykova MI. Experimental studies of operational properties of asphaltene-resin-wax deposits formed in oil trunk pipelines. PST [Internet]. 2019Aug.31 [cited 2019Nov.12];3(1):22-8. Available from: https://pipeline-science.com/index.php/PST/article/view/99

Downloads

Download data is not yet available.
Abstract 15 | PDF file Downloads 9

##plugins.themes.bootstrap3.article.details##

Keywords

asphaltene-resin-wax deposits, oil pipeline, thermal insulation, corrosion, inner protective coating, roughness of inner surface of the pipe wall, thermophysical properties, corrosion protection, heat transfer

References
[1] Mazepa B. A. Study of the nature of wax precipitation in oil gathering systems and field equipment. In the book: Control of wax depositions. M.: Nedra, 1965. p. 237–249. (In Russ.)
[2] Tronov V. P. Theoretical evaluation of the effect of physical properties, surface quality and other factors on the wax depositions intensity. In the book.: Geology, development, wells drilling and oil production. Bugulma: TatNII, 1962. Issue 4. p. 400–412. (In Russ.)
[3] Tronov V. P. On the mechanism of the effect of nature of surfaces on their waxing / Proceedings of TatNII. Issue. 11. L.: Nedra, 1968. p. 191–200. (In Russ.)
[4] Tronov V. P. Mechanism of forming resin-wax deposits and their control. M.: Nedra, 1970. p. 139. (In Russ)
[5] Didkovskaya A. S., Lurie M. V. Iterative algorithm of hydraulic calculation of non-isothermal oil pumping //Science and technology of pipeline transportation of oil and oil products. 2016. No. 2. p. 41–49. (In Russ.)
[6] Lyapin A. Yu., Astakhov A.V., Mikhalev Yu. L. Study of the paraffins crystallization temperature to reduce the formation of asphalt-resin-wax deposits // Science and technology of pipeline transportation of oil and petroleum products. 2017. Vol. 7. No. 6. p. 28–35. (In Russ.)
[7] Gilmutdinov N. R., Dmitriev M. E., Mastobayev B. N. New areas of asphalt-resin-wax deposits use in the pipeline transportation of oil // Transport and storage of petroleum products and hydrocarbons. 2015. No. 2. p. 8–12. (In Russ.)
[8] Simulation of the thermal regime in the creation of a controlled ARWD layer on the inner surface of oil pipelines/ P. A. Revel-Muroz [et al.] //Transport and storage ofpetroleum products and hydrocarbons. 2016. No. 1. p. 9–12. (In Russ.)
[9] Sunagatullin R. Z., Dmitriev M. E. On the method of affecting the intensity of the formation of asphalt-resinwax deposits in oil pipelines: Abstracts of the International educational, scientific and practical conference “Pipeline transport – 2017”. Ufa: publishing house of USPTU, 2017. p. 182–183. (In Russ.)
[10] Sunagatullin R. Z., Mastobayev B. N. The use of a layer of asphalt-resin-wax deposits on the inner surface of the pipeline to provide thermal insulation effect and corrosion protection: Abstracts of the International educational, scientific and practical conference “Pipeline transport – 2017”. Ufa: publishing house of USPTU, 2017. p. 184–185. (In Russ.)
Section
Original Work