ANALYSIS OF COMPLICATIONS ASSOCIATED WITH THE PARAFFINIZATION OF BOREHOLE EQUIPMENT AND MEASURES TO PREVENT THEM
Bissengaliev M. Bayamirova R. Togasheva A. Zholbasarova A. Zaydemova Z.
2022National Academy of Sciences of the Republic of Kazakhstan
News of the National Academy of Sciences of the Republic of Kazakhstan, Series of Geology and Technical Sciences
2022#3Issue 45376 - 88 pp.
Oil production from wells is accompanied by a decrease in temperature, pressure and degassing of the produced oil. As a result, asphaltene-resin-paraffin deposits (ARPS) are separated from oil and deposited in the wellbore region and on oilfield equipment. These deposits significantly impair the filtration characteristics of the wellbore, reduce the throughput of equipment, and also reduce their operation period. From the analysis carried out, the problem of protecting field equipment from ARPS is the most common method in the fields, the thermal method of dewaxing wells using hot water. The analysis of the effectiveness of the work carried out on the injection of the emulsion of a complex effect on the formation is carried out. When evaluating the effectiveness of the complex impact emulsion, additional oil production was determined, calculated as the difference between the actual and base production for this well. The article discusses the issue that a whole range of scrapers of various designs has been developed to remove the already formed deposits of ARPS on the tubing. The use of pipes with a polyamide coating (high mechanical, chemical and thermal resistance) is also used, which open up great prospects for their implementation in some fields of Kazakhstan. It should be noted that the thermal effect on the flow of well production, in which the temperature of the liquid remains above the temperature of the onset of wax crystallization throughout the depth of the well, is an effective solution to the problem of preventing the formation of ARPS. Such an effect is executed using a heating cable.
asphaltene-resin-paraffin deposits , complex action emulsion , hot water , plastic scrapers , thermal method
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Atyrau University of Oil and Gas named after S. Utebaev, Atyrau, Kazakhstan
Caspian state university of technologies and engineering named after S. Yessenov, Aktau, Kazakhstan
Atyrau University of Oil and Gas named after S. Utebaev
Caspian state university of technologies and engineering named after S. Yessenov
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