Antelope offers several styles of both slip-on and hinged welded standard bow centralizers, with straight and spiral bow spring designs. These centralizers are easily installed over stop collars or couplings on all standard casing grades and provide casing centralization in the wellbore for vertical, deviated and horizontal wells. They also help reduce the effects of channeling by improving the cement flow, which results in a more uniform thickness between the casing and wellbore, and are designed to have very low starting and running forces and a strong restoring force.
500 Series – Hinged, Welded, Standard Bow Centralizer
The 500 Series Centralizer can be quickly installed over a stop collar or coupling thanks to its hinge-pin design. It also features straight bow springs that are welded onto the hinged end collars.
500 Series – Hinged, Welded, Standard Bow Centralizer with Set Screws
This centralizer increases the holding force of the 500 Series by adding evenly spaced integral set screws to assist the welded straight bow springs. A stop collar or coupling is not required with this centralizer.
507 Series – Hinged, Welded, Standard Bow Centralizer with Turbo Fins
The 507 Series centralizes the casing via straight bow springs with turbo fins that are welded onto the hinged end collars. The fins induce a spiral flow pattern to cement slurry and help reduce channeling during cementing operations. They also help remove mud cake from the wellbore to keep the well producing at its maximum potential.
509 Series – Hinged, Welded, Standard Bow Centralizer with Turbo Fins & Set Screws
The 509 Series Centralizer combines the enhanced holding force of the 501 Series with the slurry cementing and channeling reducing capabilities of the 507 Series. The hinged design ensures a simple installation process, usually over a stop collar or coupling.
500 Series – Slip-On, Welded, Standard Bow Centralizer
This slip-on centralizer consists of two slip-on, three-inch-long creased steel collars with straight bow springs that are welded onto the outside of the slip-on end collars. These centralizers are normally run between two stop collars or over one slip-on stop collar to provide the casing/liner a smooth bearing surface.
511 Series – Slip-On, Welded, Standard Bow Centralizer with Set Screws
The 511 Series ups the holding power of the 510 by including evenly spaced integral set screws, thereby eliminating the need for stop collars. It is also a slip-on style centralizer.
530 Series – Hinged, Welded, Extended Bow Centralizer
The 530 Series Centralizer consists of four 30”-long, extended straight bow springs that are welded onto the hinged end collars. The extended bow springs allow for greater flexing of the bows to pass through various hole sizes.
540 Series – Hinged, Welded, Extended Bow, Gravel Packer Centralizer
The 540 Series provides centralization in openhole gravel packs. Its four straight bow springs measure 40 inches, an extended length that enables them to flex significantly to pass through a wide range of hole sizes.
544 Series – Hinged, Welded, Extended Bow, Stab-In Drill Pipe Centralizer
With 40”-long, extended straight bow springs welded onto the hinged end collars, the 544 Series can be used in a variety of restrictive situations. It is used to centralize casing during stab-in cementing operations.
570 Series – Hinged, Welded, Heavy Duty, Standard Bow Centralizer
For the toughest cementing jobs, Antelope offers the 570 Series. With straight “heavy duty” bow springs that are welded onto the end collars, the 570 Series is built in a hinged configuration for easy installation.