Investigation of Heat Exchange Processes in the Oil Well

DOI

10.2991/isees-19.2019.135How to use a DOI?

Keywords

turbulent mixing; dimensionless parameter; boundary layer; particle degree of freedom; approximation of averages.

Abstract

In the practice of pumping oil wells, thermo-boric conditions occurring inside the well are important. The neglect(or omission) of heat exchange processes occurring in the well may lead to a decrease in the performance of pumping equipment, reduced turnaround time and accidental failures of downhole equipment. In this paper, on the basis of the obtained theoretical and experimental conclusions made by well-known experts in the field of hydromechanics and thermodynamics, the issues of heat exchange processes occurring inside an operating well are considered. The heat transfer for a mixture of water - feldspar particles with a turbulent mode of motion in the annular space is investigated. The combined effect of the particle size on the heat transfer coefficient, the hydraulic diameter of the annular space, the ratio of the hydraulic diameter to the average particle diameter, the concentration of particles in the mixture, the Prandtl and Reynolds numbers is experimentally shown. It has been established that omission of the influence of a mechanical impurity in determining the heat exchange coefficient may lead to its understating more than 2 times, and the temperature of the electric motor - by 10 °C. The selection of the technological parameters of the operation of the ESP in such a way that the value of dp falls within the interval from 2 to 6 will help improve heat exchange and protect the electro motor from overheating.

Copyright

© 2019, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - N.D. Bulchayev
AU  - A.Sh. Khaladov
AU  - I.G. Gairabekov
AU  - R.Kh. Mollaev
AU  - A.S. Abumuslimov
PY  - 2019/08
DA  - 2019/08
TI  - Investigation of Heat Exchange Processes in the Oil Well
BT  - Proceedings of the International Symposium "Engineering and Earth Sciences: Applied and Fundamental Research" dedicated to the 85th anniversary of H.I. Ibragimov (ISEES 2019)
PB  - Atlantis Press
SP  - 144
EP  - 148
SN  - 2590-3217
UR  - https://doi.org/10.2991/isees-19.2019.135
DO  - 10.2991/isees-19.2019.135
ID  - Bulchayev2019/08
ER  -