API 10D Hinged Double Bow Spring Centralizer

API 10D Hinged Double Bow Spring Centralizer

The bow springs of this centralizer are attached to the end rings without welding. The centralizer bow end is connected to the end rings with a locking tab that bears the load force on the centralizer. The centralizers are supplied in hinged segments joined by hinge pins in each segment. All non-welded centralizers meet or exceed the requirements of API Specification 10D, which dictates the minimum restoring and maximum starting forces for centralizers for various casing/hole size combination's. Centralizers with turbo-fins attached to each bow spring are designed to create localized turbulent fluid flow at the centralizer. The turbo-fins divert the fluid flow to more evenly distribute cement around the casing.

Casing Centralizer Technical Parameters:

No.	Type	Inside diameter (mm)	Height (mm)	Total height (mm)	Largest diameter (mm)
1	5“*12-1/4”	128-131	105	690	330
2	5”*20”	128-131	105	720	535
3	5-1/2”*7”	142-148	55	650	215
4	5-1/2”*8-1/2”	142-148	55	650	225
5	6”*8-1/2”	156-158	55	650	235
6	7”*8-1/2”	181-186	55	650	235
7	7”*9-5/8”	181-186	55	650	255
8	7-5/8”*9-5/8”	197-201	55	650	275
9	9-5/8”*12-1/4”	250-255	55	650	330
10	13-3/8”*17-1/2”	342-347	55	650	450
11	5-1/2”*8-1/2”	142-148	110	650	225
12	7”*9-5/8”	181-186	110	650	255
13	7”*8-1/2”	181-186	110	650	235
14	5”*6-1/2”	128-131	110	650	175
15	7-5/8”*9-1/2”	196-200	110	650	250
16	10-3/4”*12-1/4”	274-276	110	650	330
17	5”*6-1/4”	130-132	110	650	170
18	9-5/8”*12-1/4”	250-255	110	650	330
19	13-3/8”*17-1/2”	342-347	110	650	450
20	5-1/2”*8-1/2”	142-148	55	650	225

Sue Zhao
Puyang Zhongshi Group Co., Ltd.
Office: Room 2-1-507,International Trade Center, Zhengzhou City, Henan Province, CHINA
Factory: The 5th District, Zhongyuan Oil Field, Puyang City, Henan Province, CHINA
Skype: scarlett-chemical

WhatsApp: 008615981981809
Tel: 0086 371 8709 6211
Fax: 0086 371 8709 6212
Email: zhongshi03@chinajixie.com 
Web: www.zs-oilfieldequip.com; www.chinajixie.com