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Roller centralizers for oil drilling equipment, well downhole tools

Roller centralizers

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Description

Detailed Product Description
Roller centralizers for oil drilling equipment, well downhole tools

Description:
Roller centralizers are mainly used for big high-deviated Wells and horizontal wells,for casings
being centered.lt can make sliding friction into rolling friction between casings and borehole wall,and can
effectively reduce the friction under running casing.

In addition, levorotatory spiral groove has cleaning effect, and can change state of casing blocked in the
process of construction,so that ensure running casing smoothly. Roller centralizers can also remove
wellbore cake, and improve mud replace efficiency etc. Roller centralizer is indispensable cementing
accessories tools in the completion of big high-deviated Wells and horizontal wells.

Making roller centralizers in the design position,while tighten positioning pin,then run into well.

When strings reach the buidling and level section,roller centralizers in the well make casing strings centered and sliding friction into rolling friction between casings and borehole wall,in addition reduce the friction under running casing.



Applications:

Oil drilling,drilling rig parts,drilling equipment,cementing equipment


Specifications :
Casing OD Hole ID MAX OD (mm)
4 1/2& quot; 6 1/4& quot; 152
5& quot; 6 1/2& quot; 159
5 1/2& quot; 8 1/2& quot; 210
6 5/8〃 8 1/2& quot; 210
7& quot; 8 1/2& quot; 210
7 5/8〃 9 1/2& quot; 235
8 5/8& quot; 10 3/4& quot; 260
9 5/8& quot; 12 1/4& quot; 298
10 3/4& quot; 12 1/4 298
11 3/4& quot; 14 3/4” 362
13 3/8& quot;〃 17 1/2” 432
16& quot; 20& quot; 495
20& quot; 26〃 635

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