A magnetic change speed gearbox 16 is described for use in a downhole assemblies having a higher speed shaft supported by a gas bearing. The downhole assembly may be one comprising a motor 14 driving a compressor 12 by way of a step-up magnetic gearbox 16 or one comprising a gas turbine driving a pump by way of a step-down magnetic gearbox.
申请公布号
WO2012143807(A2)
申请公布日期
2012.10.26
申请号
WO2012IB51568
申请日期
2012.03.30
申请人
CORAC GROUP PLC;ALFORD, ADRIAN;REED, JULIAN;SHIP, KAR