Supervisor: Dr James Ing (University of Aberdeen), Dr Yang Liu (Robert Gordon University)
Sponsoring company: Tomax
PhD Student: Mohammad Dehkordi
Stick slip, or drillstring torsional vibrations occur when the drillstring is not stiff enough to support stable drilling and the drillbit stalls. The ‘’TOMAX’’ anti-stall-tool (AST) is a tool which mitigates stick slip. This project develops a mathematical model of the drillstring and AST, to analyse the dynamic stability and investigate the design. Preliminary results will be presented in this talk, along with plans for experimental validation.