Theory teaching
In this course study the technology of directional wells. It also discusses the difficulties that may arise in the process of drilling with an analysis of their development and methods for solving. Drilling and design of directional and horizontal wells as well as mathematical models of types of their trajectory. Wellbore surveying with a special emphasis on the measurement while drilling "MWD" in the horizontal wells. Occurrence of technical problems caused by the characteristics of the formations. Analysis of the causes of wellbore collapse, drilling fluid losses, fluid inflow and pipe sticking and consequences. Methods for prevention of these difficulties as well as methods for the recovery of the resulting problems, with selection of appropriate tools.

Practical teaching
Designing well trajectory of directional and horizontal wells as well as the selection of the casing program. Procedures for preventing loss of drilling fluids in permeable formations. Procedures to prevent the inflow of formation fluids. Determination of the stuck point and process of retrieving a stuck pipe also selecting appropriate tools for instrumentation.

1. Bizjak R.: “Tehnologija bušenja sa projektovanjem”, DIT NIS-Naftagas, Novi Sad, 2004.
2. Hrković K., Bizjak R.: “Teorijski aspekti i primena istražno – eksploatacionog bušenja: TEHNIKA I TEHNOLOGIJA”, DIT NIS-Naftagas Novi Sad, 2002.
3. Bizjak R.: “Kontrola dotoka ležišnih fluida u bušotinu”, DIT NIS-Naftagas, Novi Sad, 1997.