Design Features of Drill Strings with the Power Conductor Lines for Electrodrilling

Arseniy Shcherbakov

Research output: ThesisMaster's Thesis

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From year to year, the well construction process becomes more challenging, the oil and gas industry requires new technologies or upgrades of existing ones to ensure high efficiency and reliability of the drilling process. Enhancement in the construction feasibility indicators of deep, branched, complex profile and extended reach drilling wells can be achieved through the promotion of technology developed in the middle of the last century and applied in the oil and gas fields of the USSR ¿ electric bottomhole drilling. This technology combines the benefits of drill string with conductor lines and ideal downhole motor, that is independent of the drilling mud type and has a wide range of revolution rates. The new generation of submersible permanent magnet electric motor (PMM) and the new drill string design with power conductor lines (DPC) will have improved performance capabilities that can potentially eliminate the shortcomings of the previous generation. The features of DPC operational process for ensuring PMM exploitation will be considered in the master thesis. DPC pressure losses analysis in comparison with conventional drill pipes for rotary drilling with hydraulic downhole motors are demonstrated. Analytical and numerical analysis of power conductors affection on pressure losses in DPC were conducted. To further clarify the conductors affection, plan and methodology of experimental test on Neftekamsk Machinery Plant of Special Equipment are presented. The dynamic analysis of DPC operational process for observing sensible design parts with DYNTUB software and bench test preparation are proposed.
Translated title of the contributionKonstruktionsmerkmale von Bohrsträngen mit den Stromleitungen zum Elektrobohren
Original languageEnglish
Awarding Institution
  • Montanuniversität
  • Vita, Petr, Co-Supervisor (internal)
  • Gelfgat, Mikhail, Supervisor (external)
  • Prohaska-Marchried, Michael, Supervisor (internal)
  • Fadeikin, Alexander, Co-Supervisor (external), External person
Publication statusPublished - 2022

Bibliographical note

no embargo


  • Electrodrilling
  • drill pipe with power conductors
  • hydraulic losses
  • dynamic loads

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