LWD acquires formation evaluation and wellbore data in real time while the bit is cutting rock. Sensors housed in drill collars measure gamma ray, resistivity, density, neutron porosity, sonic, NMR, ...

Purpose: A drill bit converts surface energy (rotation, axial load, and drilling fluid power) into rock failure at the wellbore face, creating cuttings and deepening the hole. I.3 Energy sources at ...

Off-shore oil drilling currently accounts for over 35% of the world's total oil production, and that number has consistently risen over recent history. While a majority of oil extraction takes place ...