Use of casing centralizer

Q:How is the casing centralizer installed on the casing?How is the casing centralizer fixed to the casing when running the well?It goes through the stud,right?Does it need to be fixed?
Answer:The casing centralizer is generally divided into elastic centralizer and rigid centralizer,sometimes can be described as semi-rigid.Most of the rigid centralizers are a little bit larger in diameter than the casing.They are inserted through the buckle and then tightened.Also has the end section form,the spot uses rarely.Materials can be cast steel,aluminum alloy,high-performance polymers.Elastic centralizer has a system type,welding type,generally in order to fix convenient,are connected with a hinge flap,can wait for the casing screw is connected,set on the casing collar,can prevent the centralizer moving up and down;If not used on a collar,the elastic centralizer must use a clamp,which is fixed to a design position in the casing,with the elastic centralizer on both ends of the clamp.Welded type elastic centralizers,if not hinged,can only be threaded through the male buckle end of the casing and then secured with a separable clamp.