TY  - JOUR
AU  - Sazonov, Iuri Appolonievich 
AU  - Mokhov, Mikhail Albertovich 
AU  - Demidova, Anastasia Aleksandrovna 
PY  - 2016
TI  - Development of Small Hydraulic Downhole Motors for Well Drilling Applications
JF  - American Journal of Applied Sciences
VL  - 13
IS  - 10
DO  - 10.3844/ajassp.2016.1053.1059
UR  - https://thescipub.com/abstract/ajassp.2016.1053.1059
AB  - 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.