i-Opener SO (Single-Open) Toe Sleeve

Our i-Opener SO toe sleeve supports plug-and-perf operations or stimulation of the first frac stage by allowing the injection of fluid into a formation.

Render of Toe Valve full view
  • Description Description
  • Ruler Specifications
  • Resources Resources

Our i-Opener SO toe sleeve is designed for use in horizontal multizone completions and serves as the primary initiation point to establish injection into the formation, eliminating the need for intervention. Once activated, the high-flow area through the ports allows injection of fluid to support plug-and-perf operations or stimulation of the first frac stage.

The i-Opener has redundant burst disks that protect the inner components of the sleeve from debris and cement during installation. The tool functions once exceeding the absolute pressure rating applied to the rupture disks. Once ruptured, pressure shifts the sleeve, opening the injection ports and providing communication to the reservoir.


  • Large ID through the tool
  • No inner sleeve between ports once activated
  • Engineered rupture disks versus shear screws
  • Redundant flow path to open sleeve


  • Compatible with industry-standard wiper plugs
  • Unrestricted, larger flow area reduces plugging potential
  • Greater accuracy for activation pressure
  • Debris-tolerant during activation


  • Cemented and openhole horizontal multistage completions
  • Toe initiation for plug-and-perf and sleeve systems
  • First-stage fracs

i-Opener Toe Sleeve Specifications


4.500 in. (114.3 mm)

5.500 in. (139.7 mm)

Maximum OD

5.65 in. (143.5 mm)

7.06 in. (179.3 mm)

Minimum ID

3.710 in. (94.2 mm)

4.663 in. (118.4 mm)

Burst pressure rating

17,500 psi (1206 bar)

16,000 psi (1103 bar)

Collapse pressure rating

11,700 psi (806.7 bar)

11,000 psi (758.4 bar)

Flow area

12.0 (7,742)

17.0 (10,967)

Temperature rating

325 °F (162.7 °C)

325 °F (162.7 °C)

Rupture disk range

3,000 to 16,500 psi (206.84 to 1137 bar)

3,000 to 15,500 psi (206.84 to 1068 bar)


4140 to 4145, 125 ksi

Overall length

42.5 in. (1,079 mm)

43.4 in. (1,102 mm)

  • i-Opener SO - Toe Sleeve Data Sheet
  • URFC Allows Operator to Casing Deploy Cemented and Openhole Liners Case Study

Related Products