作者: Steve Rosenblatt , Bennett M. Richard , Michael H. Johnson
DOI:
关键词: Geotechnical engineering 、 Engineering 、 Bit (horse) 、 Drill 、 Seal (mechanical) 、 Mechanical engineering
摘要: A liner rotates a bit to make more hole. The has openings with inserts in them lend torque resistance the liner. have passage send control media and seal so that can hold pressure for run get proper circulation through bit. When sufficient hole is made, hung off an existing cemented tubular passages sand removed by variety of techniques formation be produced single trip.