Research Article Open Access

Development of Small Hydraulic Downhole Motors for Well Drilling Applications

Iuri Appolonievich Sazonov1, Mikhail Albertovich Mokhov1 and Anastasia Aleksandrovna Demidova1
  • 1 Gubkin Russian State Oil and Gas University, Russia
American Journal of Applied Sciences
Volume 13 No. 10, 2016, 1053-1059


Submitted On: 27 May 2016 Published On: 7 October 2016

How to Cite: Sazonov, I. A., Mokhov, M. A. & Demidova, A. A. (2016). Development of Small Hydraulic Downhole Motors for Well Drilling Applications. American Journal of Applied Sciences, 13(10), 1053-1059.


Further development of the well drilling technologies becomes possible due to the improvement of rock cutting tools and hydraulic downhole motors. When developing a new hydraulic motor, it is highly important to eliminate rotor vibrations and reduce motor size. There are two main trends in further improvement of hydraulic motors: The upgrade of the downhole screw motors currently in use and the development of new reliable geared turbodrills. Besides, the R&D works are underway to construct a roller vane motor for downhole drilling. The experts of Gubkin Russian State University of Oil and Gas have launched a new R&D programme aiming at developing a hybrid hydraulic system combining the best features of a screw motor and a roller vane motor. The hybrid hydraulic system could be a radical solution to the problem of rotor vibrations in a hydraulic motor. The R&D activities conducted by Gubkin Russian State University of Oil and Gas are intended to create an advanced downhole drilling motor for the cutting tools with high-torque bits rotating at a speed of 240 to 450 rpm. The main area of application of the hybrid hydraulic motor is horizontal drilling of oil and gas fields. Yet, some R&D findings can be used for performing other production tasks, e.g., designing the pumping facilities for oil and gas extraction and pumping.

  • 2 Citations



  • Hydraulic Downhole Motor
  • Drilling
  • Well
  • Oil
  • Gas