ConocoPhillips Canada

Glencoe Resources
 
Merrit Energy Ltd.
 
Northrock Resources
 
Suncor Inc. Resources Group

Petro Canada

Encal Energy Inc.
 
Anadarko Canada Corporation

Talisman

Ryder Resources

Suncor Inc. Resources Group

Encana Corporation 

Enerplus Energy Ltd.

APL Oil & Gas

Devon Canada
 
Canadian Crude Separators
 
Husky Oil Operations
 
Burmis