Tanyana Nikolaevna Ivanova, Aleksandr Ivanovich Korshunov, Maroš Soldán, Dmitrij Nikolaevich Novokshonov, Witold Bialy, Mihail Nikolaevich Baranov
The Efficiency of Use of Heating Cables in Wells of Complicated Stock
Číslo: 2/2018
Periodikum: Acta Montanistica Slovaca
Klíčová slova: asphalt-paraffin-resin deposition, sucker-rod pumping units, heating lines, well, paraffin deposition, equipment failures, solid particles.
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producing wells can be complicated by asphalt-paraffin-resin deposition (APRD) on the surface of downhole equipment. Scientists and
industrial workers have studied factors like pressure, temperature, the nature of wettability of the wetted surface, oil flow rate, resin,
asphaltene and paraffin wax percentage in reservoir oil composition. That gives an opportunity to resolve problems of APRD prevention and
removal purposefully. Methods of APRD prevention in oil producing wells were analysed, data of measuring of the thickness of APRD,
formed on downhole equipment in the process of producing well exploitation, were obtained and treated during this research work. In
addition, the depth where intensified paraffin formation starts was determined. It was recommended what devices and technologies for
APRD prevention and removal to use to decrease the number of workovers and flushing of producing wells. The technology of APRD
prevention by maintaining oil flow temperature with heating cable employment is proposed. During operation, the cable heats the internal or
external surface of tubing string which, in turn, heat the fluid that moves through the string to the temperature equal or exceeding
the temperature of deposition formation.