|
NGS
|
Natural Gas Services Group, Inc.
|
US
|
NYSE
|
|
NINE
|
Nine Energy Service, Inc.
|
US
|
NYSE
|
|
NOA
|
North American Energy Partners, Inc.
|
US
|
NYSE
|
|
NOBLE
|
Noble Corp. PLC
|
DK
|
CO
|
|
NORAM
|
NorAm Drilling AS
|
NO
|
OL
|
|
NOV
|
NOV Inc
|
MX
|
MX
|
|
NOV
|
National Oilwell Varco, Inc.
|
US
|
NYSE
|
|
NR
|
Newpark Resources, Inc.
|
US
|
NYSE
|
|
NSFDF
|
NXT Energy Solutions Inc
|
US
|
OTC
|
|
NTNOF
|
Northern Ocean Ltd
|
US
|
US
|
|
NTQ
|
Enteq Upstream Plc
|
UK
|
LSE
|
|
NWPIF
|
ClearStream Energy Services Inc
|
US
|
OTC
|
|
OII
|
Oceaneering International, Inc.
|
US
|
NYSE
|
|
OIS
|
Oil States International, Inc.
|
US
|
NYSE
|
|
OSXB3
|
OSX Brasil S.A
|
BR
|
SA
|
|
OTS
|
Oceanteam ASA
|
NO
|
OL
|
|
PDS
|
Precision Drilling Corporation
|
US
|
NYSE
|
|
PFC
|
Petrofac Limited
|
UK
|
LSE
|
|
PFIE
|
Profire Energy, Inc.
|
US
|
NASDAQ
|
|
PGS
|
PGS ASA
|
NO
|
OL
|