API Oilwell 4 1/2 ''Casing Spiraglider Centralizers
Solid centralizers have proven to be the casing centralizer which eliminates secondary cement squeezing and assures zonal isolation. The solid straight blade design promotes self-cleaning in the wellbore with less fluid restrictions and drag than bow centralizers and allows pipe to rotate and reciprocate freely inside the centralizer. Solid Centralizers are the superior casing accessories, delivering 360º total cement coverage.
Our centralizers are cast of a high grade aluminum alloy with one-piece construction. This design features the lowest drag and wear and fluid restrictions and has high impact and shock resistance, high tensile and yield strengths and corrosion resistance.
The 30° slope of the vane ends reduce drag and aid the casing in reaching TD. This gentle slope from the body to the height of the vane will eliminate scraping, gouging, or digging into the formation and consequently reduce balling between the vanes.
Spiral centralizer has a smooth angle between spiral righting slip and axis, is superior than conventional straight edge style: Firstly, when down into the hole and meet irregular borehole diameter there will be lateral component created on spiral centralizer by the wall of hole which can reduce the resistance to impact; Secondly, There will be Swirl flow out of the centralizer when cement slurry through the spiral sheet, get smooth, washed wall virtual mud cake, Whirl flow length is 7-9m, the best distance is 3-4m near the centralizer nearby, which can improve the displacement efficiency of cement slurry, which is very beneficial for improving cementing quality.
The high grade metallic alloy centralizer can now be placed across the productive intervals allowing clean perforations without shot distortion. Casing deterioration due to electrolysis between dissimilar metals is non-existent because the metallic alloy is the softer sacrificial metal reducing casing collapse. The centralizers are designed to slip easily on the pipe's pin end. They can run free on the joint or between stop rings, or can be secured to the casing with set screws.
Our solid straight blade centralizers are available for casing sizes ranging from 4 ½" to 20".
Specifications |
13" |
10¾" |
9" |
7 " |
7" |
5½" |
5" |
4½" |
4" |
I.D., mm |
343 |
276 |
247 |
197 |
180 |
143 |
130 |
117 |
104 |
MaxO.D.,mm |
400 |
308 |
308 |
243 |
212 |
213 |
151 |
148 |
118 |
Height, mm |
130 |
120 |
120 |
120 |
120 |
120 |
120 |
100 |
80
|
Audited Supplier 
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