1. Baker Hughes Inc.
2. Calfrac Well Services Ltd.
3. China Oilfield Services Ltd
4. Condor Energy Services Ltd
5. Dalmia Bharat Ltd
6. Gulf Energy LLC
7. Halliburton Energy Services LLC
8. Odfjell Drilling Ltd.
9. Roywell LLC
10. Sanjel Energy Services Inc.
11. Schlumberger Limited
12. SDP Services Ltd.
13. Tenaris S.A.
14. TMK Group
15. Trican Well Service Ltd.
16. Vallourec Group
17. Weatherford International Ltd.