API Oilfield Casing Accessory Bow Spring Centralizer

• Certification: ISO 9001:2008, API
• Surface Treatment: Spray-Paint
• Centralizer Type: Elastic
• Structure: Automatic Reversing
• Material: 65mn and Carbon Steel
• Type: Centralizer
• Model NO.: Bow Spring Casing Centralizer
• Size Range: 4 1/2′′---20′′
• Standard: API
• Process: Welded
• Use: Oil Well Cementing
• Transport Package: Plywood Case
• Specification: API, ISO
• Trademark: Zhongshi
• Origin: China
• HS Code: 73079900
• Production Capacity: 10000piece/Month

Product Description

API Oilfield Casing Accessory Bow Spring Centralizer

1) Material: 65Mn steel or Carbon Steel
 
2) Type: Bow Spring Casing Centralizer
 
3) Standard: API
 
4) API and ISO certified
 
5) Specifications: 4 1/2''---20''. More special sizes or combination are available as requested.

6) Photos





7) Introduction
Bow spring centralizers are to help center the casing in the wellbore, allowing even distribution of the cement around the casing during cementing operations.
The bow-type centralizer is characterized by a high restoring capability. The shape and stiffness of the bows determine the restoring force, which is defined as the resistance force when a bow is compressed by 1/3 of its uncompressed height.
 
8) Features of Bow Spring Casing Centralizer:

a. Designed for high restoring force and low starting & running force

b. The larger bows provide complete centralization in vertical or slightly deviated wells.

c. Due to the flexibility of bows, they can pass through narrow hole sections and expand in the targeted locations.

d. Undergo special coating process to prevent from rust

e. For hinged bow spring casing centralizers, end collars are designed with self-locking action, which are easy to assemble and can be shipped in half assembled condition for less shipping and storage costs.

f. The double bow casing centralizer permits compression to facilitate movement through tight spots and dog legs. Compared to other spring bow centralizers, this structure attains higher stand-off because of its higher restoring force.

9) Parameter
 

Model (in)	Hooping In-Dia. (mm)	Hooping thickness(mm	Total length (mm)	Max.Out-Di (mm)	Amount of spring(mm)
5-1/2" x 8-1/2"	142-148	3-5	650±50	225±5	5
7" x 9-5/8"	181-186	3-5	650±50	255±5	6
7" x 8-1/2"	181-186	3-5	650±50	235±5	6
8-5/8 x 12-1/4"	223-228	3-5	650±50	330±5	8
9-5/8 x 12-1/4"	250-255	3-5	650±50	330±5	8
10-3/4 x 12-1/4"	274-276	3-5	650±50	330±5	9
13-3/8"x17-1/2"	342-347	3-5	650±50	450±5	11
18-5/8"x24"	475-477	3-5	600±50	610±5	12
20"x26"	509-511	3-5	600±50	660±5	12

10) Package


11) Certificate:



Company Information

Puyang Zhongshi Group Co., Ltd is a professional manufacturer of various oilfield equipments and cementing accessories since 1997, restructured enterprise of SINOPEC. 
 
We have the certificates of API 5CT, API 11E, API 6A, API 11AX, ISO 9001 and ISO 14001, etc..  
 
Our  products mainly include: 
 
1. Casing Centralizer                          
2.  Float Collar & Float Shoe 
3. Cementing Plug                              
4.  Cementing Head
5.  Cement Basket                              
6.  Tubing Pump / Rod Pump
7.  Valve Ball & seat                            
8. Casing / Tubing Pipe and Coupling
9. Stage Collar                                    
10. Pumping Unit
11. Sucker Rod
 


Our group have more than 10 years export experience and 9 subsidiary factories, more than 500 employees. We are the first-class supplier of resources market of SINOPEC and CNPC.  Our foreign customers are mainly from America, Central Asia, Russia, Southeast Asia, Middle East, etc. 

Contact Us

PUYANG ZHONGSHI GROUP CO.,LTD
 
Add: 5th community, Zhongyuan Oilfield, Puyang, China

Website: zschinajixie.en.made-in-china.com;
                zschinajixie.en.made-in-china.com;
                zschinajixie.en.made-in-china.com

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