DST Strings
Northstar's direct experience providing drillstem testing and downhole tool services has promoted tool innovation which benefits exploration companies that need an innovative, solutions based approach to challenging operating environments.
Cased Hole DST
In a Cased Hole Drillstem Test, a retrievable production packer is set above the zone of interest, and the well is flow tested through perforations in the casing.
Open Hole DST
An Open Hole Drillstem Test is a short flow test of a well that is conducted before casing is run. The testing equipment is run into the well and the zone of interest is isolated using Inflate or Compression-Set packers.