Page 8 - SubTerra Engineering Corporate Profile - 2021 v2

Work/Roles

Project /
Owner Timeline Wash / Mining / Conversions Completions / Workovers Details

FEED/AFE Design Regulatory Procurement Drilling MIT Construction Disposal Wells AUDIT

Completed FEED
study for AFE Costs
Williams 2015 – purposes for
rd
Energy 2016 X X X feasibility of 3 entry
option into existing
Cavern.
Designed cavern
proposal to drill and
Pembina 2015 – complete existing
nd
(Corunna, 2016 X X X brine caverns (2 &
ON) 3 entries). Designing
rd
hydraulics for possible
summer 2016.
5 x Caverns
Plains (6 wells).
Midstream Performed first 3
Canada- 2013- completions, then
Ft. 2015 X X X advised PMC on future
Saskatchewan workovers.
Successful Halite core
retrieval

1 x Cavern.
Plains 2 x Disposal wells.
Midstream 2015 X X X X X X X Successfully retrieved
Canada- complete Salt core
Kerrobert (Halite & Carnalite
sections) for analysis.

Drilled a strat core
well in 2014 to
evaluate asset.
Veresen 2014 –
Infrastructure 2016 X X X X X X X X
Inc. FEED study/AFE in
2016:
2 x Disposal wells,
2 x Caverns near
Burstall, Sask.