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AssigneeMASX Energy Services Group, Inc.
InventorsManmohan S. Kalsi, Patricio D. Alvarez, Thomas F. Bailey, Larry F. Moeller
Estimating the term…
A drilling head for the controlled operation of the drill string while diverting well fluids from the well. The drilling head incorporates a kelly drive and at least one stripper rubber which rotate with the drill string extending through the drilling head. Rotation of the drive bushing and stripper rubber are controlled by bearings disposed in a bearing chamber of the drilling head through which lubricant is circulated to reduce friction and cool the bearings. A turbine ring attached to the lock nut ring of the kelly drive circulates lubricant through the bearing chamber as it rotates in association with the drive assembly of the drilling head. The turbine pump ring forces circulation of lubricant as the drive assembly rotates in addition to the circulation by the remove lubricant pump or in the event the remote pump fails to operate. The turbine ring includes a plurality of angular slots to force circulation of the lubricant as the drive assembly rotates.
In a drilling head having a drive assembly selectively rotatable with a drill string extending through the drilling head, a sealed chamber disposed in the drilling head, and lubricant supply means in fluid communication with the sealed chamber, the improvement comprising:
In a drilling head having a drive assembly selectively rotatable with a drill string extending through the drilling head, a bearing assembly disposed in a bearing chamber and rotatably supporting the drive assembly, and lubricant supply means in fluid communication with the bearing chamber, the improvement comprising a pump ring rotatably disposed within the bearing chamber to circulate lubricant through the bearing chamber upon rotation of said drive assembly, said pump ring connected to a lock nut ring of said drive assembly for rotation with the drive assembly, said pump ring including an outer face with a plurality of pump grooves formed therein.
A turbine pump ring for circulating lubricant through a bearing chamber of a drilling head, the drilling head including a drive assembly rotatably supported by a bearing assembly disposed in the bearing chamber, said pump ring comprising:
Dependencies are inferred from the claim text.