Ace Rachet Collar

Delivering unrivalled holding force under all operating conditions the ARC is the first 90,000lb+ rated stop collar on the market.  Uniquely designed, ARC mounts downhole accessories directly to the outside of the casing or completion string.

The patented 2-piece collar uses our proprietary ratchet
mechanism, press fitting the two sets of ratchets together to permanently lock the collar to the casing. Without a complex installation process or tool with troublesome set screws ARC delivers an extremely high holding force under all operating conditions, with no impact on drift.

The core of our family of products the ARC can also be used with any 3rd party centralizer or casing accessory. The ARC performs as a stop collar to hold both solid body and bow spring centralizers or other accessories on casing or liner.

The ARC can be taken directly from the shelf and installed onto any size and grade API pipe in yield strength up to 140ksi. Available for standard clearance and close-tolerance applications, the ARC is manufactured from 4140 steel or chrome materials. Non-standard sizes or materials are also available upon request.

  • Zero loose or moving parts reduces the impact on drift and reduces the risk of junk downhole

  • Ideal for chromium pipe as minimal marks left on pipe

  • Flexible in their application – suitable for use with any 3rd party centralizer or casing accessory

  • Available off-the-shelf, so no long production leadtimes and transferable between projects

  • Slim design is perfect for close tolerance operations,
    which enables it to pass tight restrictions and effectively manage surge and swab

  • Slim design allows for faster running speeds, even in
    formations with narrow mud margins

  • Quick and easy offline installation in just 1 minute per
    unit, with no pipe preparation or transportation required

  • Versatile in application as it is independent of weight, grade and thread

  • Proven to reduce costs by up to 80% when compared to centralizer subs

  • Unrivalled holding capabilities – able to withstand
    minimum axial load of 90,000lb and tested to withstand axial loads up to 180,000lb while meeting passthrough requirements

  • Mounted directly to any size and grade API pipe in yield strengths up to 140ksi

  • Available as standard, slim and ultra slim models with nonstandard sizes available on request

  • Manufactured from 4140 steel or chrome materials with non-standard materials available on request

  • Close tolerance

  • High axial load requirement

  • Long horizontal wells

  • Tough formations

More information

Further technical information is available upon request

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A Norwegian Oil & Gas company founded in 2012. An innovative global technology provider for adherence of products to any pipe.

Mekjarvik 14,

4070 Randaberg,


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