Multistage fracturing ball drop sleeve systems



Millable ball activated fracturing sleeve

  • The SUREstack™ RC Millable Valve is a ball activated fracturing sleeve designed for multiple frac stages in a well bore.
  • High flow circumferential ports located on the housing of the sleeve permits continuous communication to the reservoir for high pressure fracturing operations and production.
  • This system uses low specific gravity balls, which encourages flow back when the well is put on production.
  • Specially designed anti-rotational features are incorporated into the sleeve to ensure reliable seat mill-out performance.
  • Utilizing a designated shifting tool, the valve sleeve can be closed to shut-off water producing intervals or for interval production evaluation.

Features and Benefits

  • Compact design for ease of handling (no pup joints required)
  • Improved ball seat geometric features to enhance production capability, ball on seat pressure rating, and ball off seat performance
  • Simple valve, with only 4 main components
  • Extremely short valve, allowing for tighter stages
  • Up to 42 stages when run with a SUREstart™ Valve
  • Re-closable, designed for open-hole applications
  • Rated to 400° F (204° C) with standard trim, elastomer upgrades available


The SureStack system with ball-activated frac sleeves and retrievable seats for one run-up operation

  • The Retrievable Ball Valve is a ball-activated fracturing sleeve, designed to allow for multiple frac stages in a horizontal well bore. Once the well has been fractured, it can either be shut in or flowed back depending on customer preference.
  • Using a service rig or coiled tubing unit and a special retrieving tool, the seats are retrieved with a simple tag and release method. With its patented design, up to 36 seats can be retrieved in a single trip.
  • Utilizing a designated shifting tool, the sleeve(s) can then be closed to shut-off water producing intervals or for interval production evaluation. This system utilizes low specific gravity balls which encourage flow back when the well is put on production

Features and Benefits

  • Reduction of the cost of work – a reduction in the cycle of work after fracturing up to 30%
  • The ability to start production of the well immediately after the work on the fracturing
  • Reduction of fluid loss in the reservoir duringcompletion
  • Ensuring the operation of all open intervals of the horizontal section of the wellbore
  • Developed equipment for regions with high H2S content

Extracted 23 seats in a single workover operation