... by simple microphones. Presented at the 27th International Conference on Offshore Mechanics and Arctic Engineering, June 15th–20th, 2008 in Estoril, Portugal. acoustic signal processing cutting drilling machines fast Fourier transforms microphones rollers (machinery) vibration...

... in the laboratory. The advanced system can be used to model the response of more complex representations of a drill string with multiple modes of vibration. Application of the system to field drilling data is also addressed. 18 06 2008 05 09 2008 24 11 2008 drilling drilling machines...

... model that makes assumptions of 2D, static, and constant hole curvature, resulting in a robust computationally efficient tool that produces rapid reliable results. 12 06 2008 30 08 2008 06 11 2008 assembling cutting tools drilling drilling machines graphical user interfaces...

..., extensively used downhole, to a valuable form of useful power. In addition to serving as a source of power generation, this method acts as a vibration damping mechanism by way of suppressing the resonant mechanical response, which could extend the life of the motor. drilling drilling machines...

... oil drilling drilling machines planning There are basically two general ways to reach a subsurface target with a three-dimensional (3D) well trajectory: (1) to reach the target with no restrictions concerning the inclination and azimuth and (2) to reach the target with either a given...

.... magnetic sensors magnetic shielding drilling machines oil drilling magnetic materials petroleum magnetic field measurement magnetic surveying wellbore positioning drilling fluids The drilling fluid is one of the factors that may contribute significantly to errors in directional...