Are permanent magnet drilling motors the next generation? Manufacturers still disagree

ELECTRIC MOTORS HAVE been an integral part of the drilling industry for decades. They provide the means to drill a well – powering the drawworks, pumping fluids down the wellbore and separating cuttings upon their return . When the industry began building jackup s, electric motors enabled the lowering of legs to the seafloor and the raising of the platform above the waves. On deepwater rigs , they were used to draw in the anchors and to power thrusters on dynamically positioned semisubmersibles and drillships.