This paper will describe the successful application and effects of completely new Hydromechanical Cleaning and Hydrodynamic Bearing profiles machined externally on drilling equipment to improve hole cleaning and reduce rotary friction. Qualification programmes, including initial proving trials on a test rig, computational fluid dynamics and cuttings transportation flow loop tests, will supplement details from successful field operational use of this equipment.

Keywords:
hydromechanical cleaning zone, groove, hole cleaning, new external profile, directional drilling, particle, cleaning, upstream oil & gas, drill string, drill pipe
Subjects:
Drillstring Design, Drilling Operations, Drilling Equipment, Drilling Fluids and Materials, Well & Reservoir Surveillance and Monitoring, Drill pipe selection, Directional drilling, Drilling fluid management & disposal
Copyright 2000, IADC/SPE Drilling Conference
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