Why do we need elastomer in downhole motors?

An episode from the series "Fun with Drilling Engineering" with Prof. Dr. Matthias Reich.
Camera and cut : Susann Klein
Made at the Institute of Drilling Engineering and Fluid Mining of the Technical University Bergakademie Freiberg, Germany.
The education of Petroleum Engineers belongs to the program "Geotechnics, Mining and Geo Energy Systems".
Please feel free to visit our homepage on tu-freiberg.de/fakult3/tbt​​​... or send feedback, enquiries or suggestions to [e-mail].
Voiceover Artist: Bamisebi Joseph Adetiloye

[@hadefhamza9970]

thank you

[@JOSEANGEL580]

How can I get a model of the motor and bit

[@funwithdrillingengineering7649]

oh, that is quite difficult! I get them from the manufacturers - but just, as I am a professor at the university. But you may try! ;-) Some companies may be able to send you a file for a 3-d printer. Then you just need to find somebody to print it out for you. Good luck!