Centralizer is a kind of cementing tool. It is simple in manufacture, beautiful in structure, firm and durable, strong in centralizing force. It overcomes the shortcomings of the original welding centralizer, which is easy to take off welding. It is a kind of centralizer that can ensure the quality of drilling and cementing.
Centralizers can be divided into two categories according to their styles, elastic centralizers and rigid centralizers, each of which can be subdivided; according to the size of specifications, they can be from 31/2 in to 20 in; according to the material, they can be divided into cast steel, cast aluminium, resin, etc.
There are many kinds of centralizers, which can be divided into roller type, slider type and automatic commutation type according to their structure. Centralizers with different structures and materials are suitable for different types of eccentrically worn wells. The key technology of using centralizer anti-eccentric wear technology is the location, spacing and quantity of centralizer installation.