Universal rotating flow head having a modular lubricated bearing pack

A rotating control device comprising:

• a stationary housing having a bore;
• a modular lubricated bearing pack 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,
• an elastomeric body operable between a first non-activated state and a second activated state, the elastomeric body having an annular cavity, an inner sealing surface adapted to engage the rotatable cylindrical sleeve, and a radially outwardly extending flange supported in the bearing pack housing;
• and
• a loading ring, fit within the annular cavity, for urging the one or more seal assemblies to expand radially inwardly to engage the rotatable cylindrical sleeve for sealing thereto;
• 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 tubulars against the wellbore fluids;
• a retainer plate fit to the bore and secured therein, for securing the modular lubricated bearing pack within the bore of the stationary housing;
• and
• a plurality of lag bolts circumferentially spaced around a top portion of the stationary housing and extending radially through the stationary housing into the retainer plate.