Welcome to Well Flow International

	Bow Spring Centralizers The purpose of the Bow Spring Centralizer, both welded and non-welded, is to help center the casing in the wellbore, allowing even distribution of the cement around the casing during cementing operations. The degree to which the casing is centered depends on the performance of the centralizer and the spacing between the centralizers installed on the casing OD. Bow Spring Centralizers also help reduce casing drag in the wellbore during running operations and prevent differential stroking of the casing. They increase fluid turbulence at the tool, helping to move filter cake from the wellbore. Both welded and non-welded Bow Spring Centralizers can be run through hole restrictions in the bore hole or smaller casing strings that are cemented in the well, which in turn centers the casing below the restriction.

Non-Welded Bow Spring Centralizers Non-Welded Bow Spring Centralizers are only available in the hinge style. The bow springs of this centralizer are attached to the end rings without welding and with a locking tab that bears the load force on the centralizer. The Double Bow Centralizer is designed to withstand high lateral load encountered. Its Semi Rigid design increases the ratio of restoring force to moving force. It has the ability to withstand compressive loading while running in the wellbore due to its non-weld design. The spring characteristics of its double crested profile permit compression to facilitate movement through tight spots. Turbo-Flow Centralizers have turbo fins attached to each bow that are designed to create localized turbulent fluid flow at the centralizer. The turbo fins divert the fluid flow to more evenly distribute the cement around the casing. All Centralizers are manufactured to API specification 10D. All Centralizers undergo a special process of rust prevention before painting.