Tartan Energy Group’s Cemented Initiation Assembly enables operators to initiate stimulation operations through the toe and perform a full first-stage limited-entry stimulation in cemented wellbores. By combining Tartan’s patented Cemented Initiation Sub (CIS) and MultiFrac™ limited entry sleeves, the Initiation Assembly can be customized to the desired stimulation rate.
Since all tools — including the CIS — are incorporated into the stage design, no rock will go untreated. Because the toe stage will have the same number of points as a regular entry stage, there is no need to pump a smaller stage for the toe of the well or pump guns down to perforate the remainder of the toe/first stage.
The CIS and MultiFrac sleeves feature patent-pending BurstPoint™ ports that improve stimulation treatment placement and effectiveness and keep the system internals completely closed during installation and the cementing process, eliminating the risk of debris and cement invasion.
The MultiFrac hydro-mechanical sleeves are activated with standard or dissolvable balls and enable cluster stimulation by opening multiple sleeves with one ball. Once the sleeves are shifted, liner pressure is increased to fully open the BurstPoint ports to achieve calculated limited entry stimulation with +90% cluster efficiency.