Claims
- 1. A centralizer for installing about a joint of tubing, the centralizer comprising:a retaining collar including an outer tapering, frustoconical outer surface and a substantially cylindrical inner surface, the retaining collar being mountable about said joint of tubing with the retaining collar's inner surface in contact with the tubing outer surface; and an outer sleeve mounted about and in frictional engagement with the retaining collar, the outer sleeve having: a tapering, frustoconical inner surface selected to be mateable with the outer surface of the retaining collar; and an outer surface including bearing surfaces.
- 2. The centralizer of claim 1 wherein the bearing surfaces are spaced apart and formed of built-up weld beads.
- 3. The centralizer of claim 1 wherein the inner diameter of said retaining collar, before being mounted about said joint of tubing, is less than the outer diameter of the joint of tubing, such that the retaining collar may be secured about the joint of tubing through compression and frictional forces.
- 4. The centralizer of claim 1 wherein the inner diameter of said outer sleeve is such that when the outer sleeve is forced into place over said retaining collar, the outer sleeve is secured about the retaining collar by compression and friction forces.
RELATED APPLICATIONS
This application is a divisional application of pending application U.S. Ser. No. 09/580,405, filed on May 30, 2000 now U.S. Pat. No. 6,513,223.
US Referenced Citations (12)
Foreign Referenced Citations (1)
Number |
Date |
Country |
2258895 |
Feb 1993 |
GB |