This course is designed to convey the necessary technical information to the students, regarding drilling techniques. Although without practical applications drilling cannot be fully understood, this dreficit will be tried to be tolerated by visiting drilling operations during the course and understanding the application of the theoretical information given. The mud lab to be established will also assist the students'understanding of drilling requirements. The basic parameters of drilling (cutting rocks and taking out rock pieces) with respect to penetration and mud recycling will be given to the students with maximum detail. The topics to be covered respectively are as follows: Directional drilling, drill string design, casing design, rock bit and core-bit design, mud design, cementing, core and sludge reading and stocking, following drilling parameters (bit load, bit rpm, mud pressure, pressure loss, water loss, torque applied, drill string weight...).