Bow Spring Centralizer

Bow spring centralizer is used to keep casing in the central place of wellbore in cementing process, making cement to be evenly distributed around casing string. It has high restoring capacity, which is determined by the shape and stiffness of its bows.

 

Hinged non welded bow spring centralizer

Hinged non welded bow spring centralizer is designed for vertical and deviated wells where low starting forces and high restoring forces are required.

Our hinged non welded bow spring centralizer bows are fabricated with double rolled alloy steel. The end collars are designed with a self-locking action, which is convenient for installation. In addition, the hinged non welded bow spring centralizers can be packaged in half assembled condition, which can ensure economical shipping and storage costs.

 

Hinged non welded bow spring centralizer can be used in cased and open holes, vertical and deviated wells and wells where rotation capabilities are not required

Features of hinged non welded bow spring centralizer

· The non welded design ensures the centralizer withstand most wellbore environments, which makes operation flexible;

· The locking tabs ensure the spring steel bows to hinged collars;

· The high-efficiency bows provide optimal conditions for primary cementing to achieve zonal isolation;

· Various heights and sizes are available, which make it suitable for most applications.

 

 

Hinged welded bow spring centralizer (latch-type welded bow spring centralizer)

Hinged welded bow spring centralizer (latch-type welded bow spring centralizer) is designed to provide optimal standoff in the wellbore for efficient mud and cement displacement.

Our hinged welded bow spring centralizers (latch-type welded bow spring centralizers) are made of heat-treated spring steel bows, which can ensure maximum restoring forces and low starting forces. In addition, the hinged welded end design also makes the installation of stop collars or casing collars easy.

 

Hinged welded bow spring centralizer (latch-type welded bow spring centralizer) can be used in cased and open holes, vertical or horizontal wells and uderreamed and washed-out wells

 

Features of hinged welded bow spring centralizer (latch-type welded bow spring centralizer)

· Low starting and running forces;

· Optimum restoring forces for most well requirement;

· Can minimize differential sticking;

· Can reduces casing drag;

· Allow pipe rotation and reciprocation.

 

Slip on welded bow spring centralizer

Slip on welded bow spring centralizer is designed to provide optimum standoff in the minimal clearance wellbores for effective mud removal and cement displacement. 

Our slip on welded bow spring centralizers can be installed easily over the casing, between stop collars and casing collars. The bows are made of heat-treated spring steel, which can ensure maximum restoring forces and low running forces.   

 

Features of slip on welded bow spring centralizer

· Low starting and running forces;

· Can minimize differential sticking;

· Can reduces casing drag;

· Allow pipe rotation and reciprocation.

 

Our bow spring centralizers are strictly produced according to API Spec 10D.  

The sizes from 4 1/2 to 20 inches sizes are available. We can also provide customized service.

 

When ordering, please specify:

Casing size

Hole size or OD of the centralizer

Welded or non-welded type

If impossible, the required length of the bow spring centralizer