Multiple Stage Cementing Collar

IRI’s Stage Collars are used in applications where high hydrostatic pressures could fracture formations during cementing operations. The Stage Cementing Collar provides a means of opening and closing ports for cement displacement and positive containment of the cement after displacement. After running the casing to depth, the first stage is cemented normally. Once the first stage is complete an opening cone is dropped (Mechanical Tool) and lands on the seat of the Stage Collar, the casing string is pressured to shift the tool open. Cement is pumped per customer program, cement is displaced with the closing plug, lands on seat, pressure is applied to the casing string and the sleeve shifts to the closed position. Cementing operations are now complete.

Features

• Mechanical or Hydraulic designs
• Opening pressure is field adjustable
• Large flow port flow area (does this match the casing?)
• Compatible with cement baskets or inflatable packers
• Opening cones and plugs are made in composite materials for easy drill out
• Tool positively “locks out” following cementing operations
• Temperature rated to 350 F
• Manufactured to ISO 9001 Standards