Casing centralizer is one of the necessary conventional casing accessories, upon well operations completion, the rational use of casing centralizer can play the role of:Reducing lower casing resistance phenomenon, making the casing smoothly down to the design position

Technical Parameter
Spring Casing Centralizer	Size(In)	OD(mm)	IN(mm)	Height(mm)	Max Start-up Force(N)	Min Reset Force(N)
	20"	680	512	575	≤16725	≥8363
	13-3/8"	455	342	560	≤10853	≥5427
	9-5/8"*12-1/4"	335	248	560	≤7117	≥7117
	7"	235	181	560	≤4626	≥4626
	6-5/8"*8-3/4"	238	171	560	≤4270	≥4270
	5-1/2”*8-1/2”	235	142	560	≤2758	≥2758

Rigid Centralizer	13-3/8"	437	344	180
	9-5/8"*12-1/4"	305	248	120
	7"	210	182	120
	6-5/8"*8-3/4"	215	171	120
	5-1/2"*8-1/2"	210	142	120

Bow-spring centralizer
1.These Centralizers are designed for High Restoring Force and Low Starting Force for centralizing the casing pipe in a Vertical,Horizontal and Deviated well
2.Premium quality Bows are made of special alloy steel and hot formed in totally controlled heat treatment plant
3.Spec and performance index of bow spring casing centralizer meet API Spec 10D. The woven centralizer is connected by pin when in use, the unfolded centralizer can be stacked flatly for convenient storage and transportation.

Rigid roller centralizer
Rigid casing centralizer is used in deviated wells and horizontal wells. There are several blades on the rigid roller
centralizer that can keep casing from contacting the well bore wall

Semi-rigid Centralizer	Single Bow Spring Centralizer	Double-bow Spring Centralizer
Integral Centralizer	Rigid Centralizer	Rigid Roller Centralizer