Cemented Initiation Sub

Hydraulically Activated Toe Port for Cemented Wellbores


Tartan’s patented Cemented Initiation Sub (CIS) is a simple, reliable hydraulically activated toe port that provides the ability to initiate stimulation operations in cemented horizontal wellbores. The CIS eliminates the coiled tubing conveyed perforating (TCP) run for first stage initiation in plug-and-perf operations. No communication with the wellbore exists until the BurstPoint™ ports are opened, which is immediately followed by the fracturing process. This enables a quick start to fracturing the well, resulting in increased efficiency and reduced costs.


  • Simple, reliable and rugged design for cemented liner installations
  • Eliminates coiled tubing and perforating costs for first stage initiation in plug-and-perf operations
  • Can also be used as a flow path to initiate Tartan’s cemented MultiFrac™ or EnerFrac™ ball-drop systems
  • Can pump full stimulation treatment through BurstPoint ports for first stage stimulation


  • Provides increased operational efficiency resulting in reduced costs
  • BurstPoint ports within the CIS can be sized to control the stimulation fluid rate
  • Full drift ID – no drill out required
  • No special cementing procedures required
  • Surface pressure indication is an accurate monitor of BurstPoint port opening

Fill out your information to receive the Cemented Initiation Sub data sheet.

Case Studies


Tartan MultiFrac systems successfully stimulated 18 months post-install.


Tartan successfully completes cemented EnerFrac™ ball-drop systems in the Montney.


Tartan cemented MultiFrac limited entry ball-drop systems increase production by 12.5%.

What Our Customers are Saying

Ask us how we can help you meet your company objectives.

Complete the form below.