Patent ID: 9284811
Filing Date: 2016-03-15
CPC Classification: E21B

Claim Text:
1. A modular lubricated bearing pack for a rotating control device comprising: a bearing pack housing and a rotatable cylindrical sleeve adapted for passage of a tubular, forming an annular assembly space therebetween; bearing elements positioned in the annular assembly space for radially and axially supporting the rotatable cylindrical sleeve within the bearing pack housing; one or more seal assemblies, each of the one or more seal assemblies having at least one sealing element, each of the at least one sealing element further comprising, wherein when the elastomeric body is in the first non-activated state, the radially outwardly extending flange has a first radial extent being less than a radial extent of a space in which the elastomeric body is disposed, the first radial extent and the radial extent being measured from the rotatable cylindrical sleeve; and wherein when the elastomeric body is in the second activated state, the radially outwardly extending flange is axially compressed, distending radially towards the bearing pack housing and has a second radial extent greater than the first radial extent, the second radial extent being measured from the rotatable cylindrical sleeve; and an elastomeric stripper element for sealing the tubular against the wellbore fluids from passing thereby.