E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 49/02 (2006.01) E21B 25/00 (2006.01) F16C 17/18 (2006.01)
Patent
CA 2065142
ABSTRACT A stabilizer bearing assembly is described for maintaining separation between a substantially nonrotating inner tube assembly and a rotating core barrel within which the inner tube assembly is disposed. The bearing assembly comprises a cylindrical tube having a cylindrical sleeve segment concentrically slidably mounted on the tube over an external bearing portion thereof. The tube includes an upper and a lower segment, with the hardened bearing portion over which the sleeve sits being located near the lower end of the upper segments. A flange demarcs the upper edge of the bearing portion. The upper end of the lower tube segments is threadedly attached over the lower end of the upper segment. The sleeve segment is trapped between the flange and the edge of the upper end of the lower tube segment. The inner surface of the sleeve has a plurality of spaced longitudinal furrows and the outer surface of the sleeve has raised ridges corresponding to the furrows. The furrows provide a passage for drilling fluid and debris. The ridges have at their tops flattened bearing surfaces which define an outer circumference whose radius is greater than the radius of the outer circumference of the sleeve segment and the tube. The stabilizer assembly can be detachably inserted between adjacent upper and lower elements of a inner tube assembly. For use, one or more of such stabilizer assemblies would be inserted at spaced intervals in an inner tube assembly.
Baker Hughes Incorporated
Gowling Lafleur Henderson Llp
LandOfFree
Inner tube stabilizer for a corebarrel does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Inner tube stabilizer for a corebarrel, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Inner tube stabilizer for a corebarrel will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1770453