Themes for MSc thesis relevant for Badger Explorer: Rotary Drilling; Drill bit design for the range of formations to be penetrated, low power, torque, RoP, WoB and circulation rate. Reverse circulation. Heating, wear life, balling. Optimal process control--- e.g. Mean Specific Energy. Drilling cuttings - Size distribution, dependency, control and energy efficiency 2. Circulation; Availability of water---will there be enough, will it be chemically balanced, can it be released from shales, what will happen in a gas sand, will it migrate through the fractured packed off borehole above 3. Compaction; Transport of a sludge, effect of vibration on a particle pack - vibration devices, residual porosity versus formation types and size distribution. 4. Borehole expansion; Elastic / Plastic / Fracturing of a borehole versus formation properties for the overburden and reservoir. 5. Borehole Stability; Mechanical (thermal) / chemical---collapse limits, reactive shales Best Regards, Tom K. Steinskog Research Director - Well Construction IRIS - International Research Institute of Stavanger AS Postboks 8046 4068 Stavanger Direct line: (+47) 51 87 50 69 Company: (+47) 51 87 50 00 Mobile: (+47) 913 73 879 Fax: (+47) 51 87 52 00