Inventors:
Brian Dempsey - Orlando FL, US
Wade Duty - Ada OK, US
International Classification:
E21B 7/00
Abstract:
An improved well drilling method for directional drilling in subterranean formations which comprises incorporating into the drilling fluid an effective amount of fibrillated hydrophobic polypropylene fibers to form a suspension and injecting the suspension into the drill string whereby debris is swept from the borehole and seepage of drilling fluid into the subterranean formation is reduced.