Oil Well 4 1/2′′ Spiraglider Casing Centralizer

• Certification: ISO 9001:2000, ISO 9001:2008, API
• Surface Treatment: Spray-Paint
• Centralizer Type: Rigid
• Structure: Slider
• Material: Cast Steel
• Type: Centralizer
• Model NO.: 4 1/2′′*6′′
• Color: Red
• Samples: Available
• Length: 200mm
• Blades: 5PCS
• Drawings: Available
• Transport Package: Wood Cases
• Specification: 4 1/2′′*6′′
• Trademark: zhongshi
• Origin: China
• HS Code: 843143100
• Production Capacity: 2000piece/Month

Product Description

                                          
                                            Oil Well 4 1/2'' Spiraglider Casing Centralizer

The hydro-formed casing centralizer provides positive center positioning for cementing in vertical and deviated wells drilled using TDDirect casing-drilling and liner-drilling technology. The centralizers are placed on the outer diameter of the casing string to create standoff between casing and the borehole for casing or liner drilling.
 

The centralizer's design promotes the plastering effect, which strengthens wellbores for an effective cement bond that helps protect well integrity. Made with a special Hydro-forming process, the centralizer has an exclusive design and attachment method. The result is a casing drilling tubular that provides the strength and rigidity to withstand dynamic downhole loads while maintaining standoff under large side forces without being crushed.



Hydroform Centralizers provide a proven alternative to conventional centralizers in challenging hole sections where pipe rotation may be required to reach total depth and/or during cementing operations. 

These  Centralizers have a robust, patented design and attachment method. The unique blade design enhances circulation, hole cleaning, and cementing. Tesco offers optional tungsten carbide hard-facing on blades for even more resilience when drilling in abrasive formations. Rotating and non-rotating centralizers are available


 

The hydro-formed casing centralizer provides positive center positioning for cementing in vertical and deviated wells drilled using TDDirect casing-drilling and liner-drilling technology. The centralizers are placed on the outer diameter of the casing string to create standoff between casing and the borehole for casing or liner drilling.

 

Hydro form Centralizers have become the product of choice for operators drilling Extended Reach Horizontal Wells. The smooth geometry and wrap-around rib coverage reduces torque and drag during casing and liner installation, and improves cement distribution and bond.



 

With its inherent robustness, there have been no mechanical failures. Hydro form centralizers  have simultaneously delivered significant improvements in friction reduction.

Originally introduced as a crimp-on hard faced stabilizer specifically designed for casing drilling, these  Centralizers are now also used in that environment where they are typically crimped onto the casing.



 

some specifications for reference:

Specifications	In-Dia(mm)	Wall Thickness (mm)	Height(mm)	Total height(mm)	Largest Dia(mm)	Spring Number
5-1/2"*8-1/2"	142-148	3-5	55	650	225	5
7"*9-5/8"	181-186	3-5	55	650	255	6
7"*8-1/2"	181-186	3-5	55	650	235	6
8-5/8"*12-1/4"	223-228	3-5	55	650	330	8
9-5/8"*12-1/4"	250-255	3-5	55	650	330	8
10-3/4"*12-1/4"	274-276	3-5	55	650	330	9
13-3/8"*17-1/2"	342-347	3-5	55	650	450	11
18-5/8"*24	476	3-5	55	600	610	12
20"*26	510	3-5	55	600	660	12