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Roller centralizer/Rigid centralizer

Time:2016/11/06 Traffic:

Type of casing centralizer:
1. Roller centralizer 
2. Bow spring centralizer 
3. Rigid centralizer

 

Roller Casing Rigid Centralizers are available in sizes 4½" to 20". The Roller Centralizer consists of rigid body, on which machined five spiral blades or straight blades. There are modified alloy steel, fully heat treated rollers fixed on every blade.  The capability of the roller Centralizer is better than others of all. Roller/Wheeled centralizers are mainly used for big high roller, high deviated wells and horizontal wells, to centre casings. Roller Casing Rigid Centralizers can also remove wellbore cake and improve mud replacement efficiency etc.
 

 

 

Model Style Max OD (mm) ID (mm) Length (mm)
ZSGF-4 1/2 x 6 I, II, III 145 116.5 200
ZSGF-5 x 6 I, II, III 145 129 200
ZSGF-5 1/2 x 8 1/2 I, II, III 205-210 142 200/300
ZSGF-6 5/8 x 8 1/2 I, II, III 205/210 171 200/300
ZSGF-7 x 8 1/2 I, II, III 205/210 181 200/300
ZSGF-7 x 9 1/2 I, II, III 225-235 181 200/300
ZSGF-7 x 9 5/8 I, II, III 225-235 181 200/300
ZSGF-9 5/8 x 12 1/4 I, II, III 300-305 248 200
ZSGF-13 3/8 x 17 1/2 I, II, III 430-435 346 200

Note: ZSGF series rigid casing centralizer, classified as straight strip type(type I), spiral (type II), roller type (type III)




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