API Standard Spiral Blade Roller Type Casing Centralizer

• Certification: ISO 9001:2000, ISO 9001:2008
• Surface Treatment: Spray-Paint
• Centralizer Type: Rigid
• Structure: Slider
• Material: Cast Steel
• Type: Centralizer
• Model NO.: 4 1/2"-20"
• Sample: Available
• Size: 4 1/2"-20"
• Drawings: Available
• Color: Red/Black/Blue
• Markings: Available
• Roller: Spiral /Straight
• Height: 200mm
• Transport Package: Wood Cases
• Specification: 4 1/2"-20"
• Trademark: zhongshi
• Origin: China
• HS Code: 843143100
• Production Capacity: 10000PCS/Month

Product Description

 API Standard Spiral roller casing centralizer
There are two sets of rollers on the blades, and the coaxial line of rollers is perpendicular to the wellbore coaxial line. When the casings reach to inclined part, one hand the major part of casing will not contact with the lower side of wellbore, hence the friction area will be smaller. On the other hand, due to the rolling of roller, the conventional sliding friction will be changed to rolling friction, which greatly reduces the coefficient of friction resistance between casing and sidewall, and is conducive to put in the casing.
some specifications for reference:
 
 

Type	13 3/8"	10 3/4"	9 5/8"	7 5/8"	7"	5 1/2"	5"	4 1/2"	4"
ID mm	343	276	247	197	180	143	130	117	104
Max. OD mm	400	308	308	243	212	213	151	148	118
Height mm	130	120	120	120	120	120	120	100	80

 








Features
 
1. Spiral blades increase annular turbulence.
 
2.  With the shape of stream-lined, it enables casing run easily in wellbore.
 
3. Both straight blade and spiral blade are available.
 
4. The material can be cast steel or cast aluminum.

type	Inside diameter	Height	Total height	Largest diameter
5*12-1/4	128-131	105	690	330
5*20	128-131	105	720	535
5-1/2*7	142-148	55	650	215
5-1/2*8-1/2	142-148	55	650	225
6*8-1/2	156-158	55	650	235
7*8-1/2	181-186	55	650	235
7*9-5/8	181-186	55	650	255
7-5/8*9-5/8	197-201	55	650	275
9-5/8*12-1/4	250-255	55	650	330
13-3/8*17-1/2	342-347	55	650	450
5-1/2*8-1/2	142-148	110	650	225
7*9-5/8	181-186	110	650	255
7*8-1/2	181-186	110	650	235
5*6-1/2	128-131	110	650	175
7-5/8*9-1/2	196-200	110	650	250
10-3/4*12-1/4	274-276	110	650	330
5*6-1/4	130-132	110	650	170
9-5/8*12-1/4	250-255	110	650	330
13-3/8*17-1/2	342-347	110	650	450
5-1/2*8-1/2	142-148	55	650	225