4 1/2" Spiral Vane Roller Casing Centralizer For Oil Water Well

Roller Centralizers can also remove wellbore cake and improve mud replacement efficiency etc.Roller Centralizers provide superior wear resistance and have been proven to remain functional throughout the life of the well and can aid in casing/tubing retrieval.

Features

• With low drag to get casing, liners or screens to bottom successfully .
• The roller centralizers are designed in rigid body with straight or spiral blades.
• The roller centralizer is used in deviated and horizontal wells.
• Minimal roller-contact area reduces the risk of differential sticking and provides optimal standoff to increase efficiency

Specification:

Specification	casing size (mm)	Hole Size (mm)	Inner Diameter (mm)	Outer Diameter (mm)
9-5/8″×12-1/4″	244	311	249	305
13-3/8″×17-1/2"	340	445	344	439
5-1/2″×8-1/2″	140	216	142	210
6-5/8″×8-1/2″	168	216	172	210
7″×8-1/2″	178	216	182	210
7"× 9-1/2"	178	241	182	235
4-1/2"×6"	114	152	118	146
5"×6 5/8"	127	168	131	162

Puyang Zhongshi Group Co., Ltd., restructured from SINOPEC in 1997 has 20 years experience on manufacturing petroleum machinery products . The company registered capital is 10 million U.S. dollars, with annual export 30 million U.S. Dollars.

We have competitive price of our main products like: subsurface sucker rod pump, pumping unit, cementing tools, wellhead (Christmas Tree), etc, with certificates of API11AX,API11E,API6A,API5CT,ISO14001 and ISO9001 approved. We have 9 factories, 580 employees, including more than 160 technicians and engineers.

With 20 years manufacturing experience and more than 10 years exporting experience, our main clients include all oilfields in China such as: Zhongyuan, Daqing, Shengli, Changqing, Nanyang, Karamay, etc and we have exported to more than 30 countries abroad such as: Indonesia, Thailand, Myanmar, Russia, Kazakhstan, Venezuela, Peru, Columbia, Canada, America, Sudan, Egypt, Iran, Australia etc.

We would like to cooperate with friends from all over the world with high quality products and service to achieve mutual development .