API 11B Full Bodied Coupling Sucker Rod Centralizer / Oil Tubing Centralizer
The sucker rod centralizers are used to protect sucker rod to reduce wearing.
Feature of rod centralizer
1) Standard: API 11B
2) API and ISO certified
3) Specification: 16mm, 19mm, 22mm, 25mm, 28mm
4) Type: Coupling Rod Guide, Wheeled Rod Guide, Clamp Rod Guide
Description of rod centralizer
Sucker Rod Guide, or Sucker Rod Centralizer, used in pumping well, is a tool which can set upright the sucker rod, and protect the sucker rod from wiping with tubing pipe.
4.Application
| CASING SIZE | TUBING CENTRALIZER | TUBING CENTRALIZER | |
| NO. | OCTG ERW | (ID) | (OD) |
| 1 | 5.5" | 2-3/8"(60.325mm) | 110mm |
| 2 | 7" 6" | 2-3/8"(60.325mm) | 140mm |
| 3 | 7" 6" | 2-7/8"(73.025mm) | 140mm |
| 4 | 2-7/8"(73.025mm) | 114-115mm | |
| 5 | 7" | 3-1/2"(88.900mm) | 140mm |
| 6 | 0.83"(210.82mm) | 419.1mm | |
| 7 | 1.19"(302.26mm) | 419.1mm | |
| Remark |
Rod centralizers with full-bore-fluted centralizers should be placed on or between the pump-handling pony rod, the sinker bars used above the pump, and the first two sucker rods above the sinker bars. Rod centralizers in these locations help stabilize the pump and valve rod and prevent valve-rod bending or breakage. When a tubing anchor is not used, rod centralizers will reduce tubing wear because of tubing helical buckling on the upstroke. Rod centralizers also may be used in crooked holes in which there are areas of concentrated tubing wear.
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