Q-Spectrum isolation seals
Isolation seals can be critical to a successful well screen / ICD screen installation, particularly in heterogeneous horizontal wells. Proper compartmentalization decreases water intrusion, excludes shale’s, increases output and ensures that the inflow control systems perform as per design.
In many applications it can be shown that increasing compartmentalization improves ultimate recovery. As the heterogeneity increases and in wells with high mobility contrast, numerous compartments may be required for optimum control. In sand control applications, stopping the annular flow in the SAS completions allows for an uniform natural pack to be created around the screens avoiding premature plugging and erosion.
Swellable isolation seals provide a very cost effective means of establishing zonal isolation, inflow control and enhanced screen life
They come in 3 main categories :
Q-Seal – Manufactured directly onto pipe
This design allow for longer sealing lengths with multiple elements and higher differential pressures up to 700 bar
Q-Slip – Slip-on sleeve design
The slip-on design provides flexibility for wells with various spaced out zones. Differential pressure up to 125 bar.
Q-Stop – Slip-on sleeve desing
Typically used for wells with ICD’s and Screens. Short lengths and differential pressure up to 20 bar.