What is a Drilling Jar - and how does it work? 

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 Technische Universität Bergakademie Freiberg, Germany.
The education of Petroleum Engineers belongs to the program "Geo- Engineering", spezialization "Geo Energy Systems".
Please feel free to visit our homepage on tu-freiberg.de.... or send feedback, enquiries or suggestions to matthias.reich@tbt.tu-freiberg.de.
Voiceover Artist: Bamisebi Joseph Adetiloye