23-02-2017 дата публикации
Номер: US20170051785A1
Принадлежит:
Disclosed is a cooling and lubricating system (and method of use) for an RCD bearing/seal assembly comprising an internal conduit for directing fresh oil into the lower end of the bearing assembly where it can then progress upwardly through the bearing assembly and seals to provide cooling and lubrication to the internal bearings and rotary seals. The RCD system employs a small footprint oiler to deliver, via pressurized air, the oil to the RCD. Also disclosed is an RCD bearing assembly outfitted with the oil channel conduits for directing oil through the RCD bearing assembly to cool and lubricate the seals and bearings. 1. A rotating control device (RCD) comprising: (a) an inner annular barrel having a top end, a bottom end, an outer surface, an inner surface, a top wear ring having a first length mounted in the barrel outer surface proximate the top end, and a bottom bear ring having a second length mounted in the barrel outer surface proximate the bottom end,', '(b) an annular stripper rubber attached to the bottom end of the inner barrel in axial relationship therewith, and', i. an outer annular barrel having a top end, a bottom end, an inner surface and an outer surface,', 'ii. a top seal plate,', 'iii. a bottom seal plate,', 'iv. an annular space defined by the top seal plate, bottom seal plate, outer barrel inner surface and the inner barrel outer surface,', 'v. bearings located within a central section of the annular space, the central section further comprising a bearing lower annular space, bearing upper annular space and a bearing central annular space therebetween,', a bottom seal housing annular space for containing a bottom seal housing sleeve, one or more lower rotary seals oriented in a direction to prevent influx of wellbore pressure, and an upper rotary seal oriented in an opposite direction of the one or more lower rotary seals,', 'the sleeve further comprising an upper sleeve end, a lower sleeve end, an outer surface, an inner surface, a first ...
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