Modeling and Control of Stick Slip and Bit Bounce in Oil Well Drill Strings

Drilling rigs usually experience severe vibrations such as stick-slip and bit-bounce while drilling wells with PDC bits. The presence of different lithology such as highly fractured limestone, sand/sandstone and highly reactive shale, will lead to severe vibrations in the drill-string. These severe vibrations usually cause failure in drill-string components, loss of expensive tools in the hole such as bit and logging sources/equipment, bit damage, wellbore instability and reduction in the rate ROP.