Ultra-Flow® Centralizers
Advanced Design Characteristics
- Full-circle Wiping of Tubing I.D. No rod-rotating required
- More Gripping Force on Rods, More Fluid Flow-by Volume than any other field-installed centralizer/scraper available
- Longer Useful Life, Larger vanes and bearing surface than any other field-installed centralizer/scraper available
- Positive Wear Indicator. When any one of the vanes on any centralizer/scraper is worn away, it should be replaced promptly
- Amodel with Glass Fill
- Hydroplaning effect is superior with positive cavity displacement pumps
Ultra-Flow® centralizers
The Ultra-Flow® field-installed rod centralizer/scraper is a two-piece, snap-together guide made from Amodel, a glass-reinforced PPA resin.
| PART NUMBER | DESCRIPTION | PRICE |
|---|---|---|
| UF2034-A | Ultra-Flow® centralizer, 2-3/8″ tubing x 3/4″ rod | $10.00 |
| UF2078-A | Ultra-Flow® centralizer, 2-3/8″ tubing x 7/8″ rod | $10.00 |
| UF2534-A | Ultra-Flow® centralizer, 2-7/8″ tubing x 3/4″ rod | $11.00 |
| UF2578-A | Ultra-Flow® centralizer, 2-7/8″ tubing x 7/8″ rod | $11.00 |
| UF2510-A | Ultra-Flow® centralizer, 2-7/8″ tubing x 1″ rod | $11.00 |
| UF3034-A | Ultra-Flow® centralizer, 3-1/2″ tubing x 3/4″ rod | $16.50 |
| UF3078-A | Ultra-Flow® centralizer, 3-1/2″ tubing x 7/8″ rod | $16.50 |
| UF3010-A | Ultra-Flow® centralizer, 3-1/2″ tubing x 1″ rod | $16.50 |
Recommended installation for centralizers
For an effective, trouble-free operation, place three centralizers on the rod: one at each end, about 14″ to 18″ from the coupling, and one centralizers near the center of the rod.
Recommended installation for paraffin scraping
Space the scrapers on the rod at a distance of 2″ to 4″ less than the stroke length to insure that you have sufficient overlap.
**The recommendations above are general in nature. Due to widely varying well conditions and special problems that you may encounter, spacing requirements of guides and scrapers may be more or less than described.
Install these centralizers/scrapers in the field quickly and easily
- Pliers and Hammer
- Hydraulic
- Shoe
Installation shoes for application of Ultra-Flow® centralizers/paraffin scrapers are available. The first shoe is free of charge. Additional shoes are $20.00 each.
Complimentary installation instructions available on CD-ROM
Materials and Service Applications
| Base material | Temp (F) | Hot Oil | Sweet Crude | Sour Crude | High Water Cut | Hot Brine |
|---|---|---|---|---|---|---|
| Amodel | To 350 F | Yes | Yes | Yes | Yes | Yes |
| Rod Cut | Tubing Sand | Corrosion Resistance | Chemical Resistance | Resistance to CO2 |
|---|---|---|---|---|
| Yes | Excellent | Excellent | Excellent | Excellent |
Suggested placement on Sucker Rods
You will generally be your own best judge for the specific circumstances of each well, but these recommendations can be helpful.
To prevent stacking
At the bottom 200 feet of the well, 4 to 6 per rod will deter rod-stacking tendency on the downstroke and tubing-stacking tendency on the upstroke.
For guiding
Where known wear occurs, use a minimum of 4 per rod; in high volume wells, use a minimum of 6 per rod.
For paraffin removal
In upper part of well where paraffin solidifies, use minimum of 6 per rod.
A “rule of thumb” formula
[Rod length (in)] / Stroke (in) + 1 = Quantity / Per Rod
For optimum placement of centralizers/scrapers on the rod string, call for Oilfield Improvements® computerized analysis of the well deviation survey to accurately define side loading and drag.
Ultra-Flow® centralizers information (PDF – 4011k)
