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Oil and Gas Service Companies*
|
|
Rank by
Market Capitalization
|
Company
|
Industry
Segment
|
Market Capitalization,
$ Million
|
| 1 |
Schlumberger Ltd. |
International Integrated |
39,775 |
| 2 |
Halliburton Company |
International Integrated |
17,244 |
| 3 |
Baker Hughes Inc. |
International Integrated |
9,367 |
| 4 |
Transocean Sedco Forex |
Offshore Drillers |
9,330 |
| 5 |
Weatherford International |
Oilfield Equipment |
6,065 |
| 6 |
Nabors Industries |
Onshore Drilling |
5,271 |
| 7 |
Diamond Offshore Drilling Company |
Offshore Drillers |
4,963 |
| 8 |
Noble Drilling Corporation |
Offshore Drillers |
4,823 |
| 9 |
ENSCO International |
Offshore Drillers |
4,119 |
| 10 |
BJ Services Company |
Oilfield Equipment |
4,534 |
| 11 |
Global Marine, Inc. |
Offshore Drillers |
3,730 |
| 12 |
Smith International |
Oilfield Equipment |
3,625 |
| 13 |
R&B Falcon Corp. |
Offshore Drillers |
3,582 |
| 14 |
Santa Fe International |
Offshore Drillers |
3,443 |
| 15 |
Cooper Cameron Corporation |
Oilfield Equipment |
3,419 |
| 16 |
Rowan Companies |
Offshore Drillers |
2,466 |
| 17 |
National Oilwell |
Oilfield Equipment |
1,810 |
| 18 |
Helmerich & Payne |
Onshore Drilling |
1,643 |
| 19 |
Tidewater Inc. |
Transportation |
1,579 |
| 20 |
Colflexip Stena Offshore |
Diving/Construction |
1,521 |
| 21 |
Hanover Company |
Oilfield Equipment |
1,481 |
| 22 |
Petroleum Geo-Services |
Seismic Services |
1,354 |
| 23 |
Marine Drilling Company |
Offshore Drillers |
1,300 |
| 24 |
Pride International |
Offshore Drillers |
1,293 |
| 25 |
Lone Star Technologies |
Oilfield Equipment |
1,156 |
| 26 |
Global Industries |
Diving/Construction |
1,080 |
| 27 |
Atwood Oceanics, Inc. |
Offshore Drillers |
828 |
| 28 |
Key Energy Services |
Onshore Drilling |
791 |
| 29 |
Patterson Energy Inc. . |
Onshore Drilling |
787 |
| 30 |
Cal Dive International |
Diving/Construction |
715 |
| 31 |
Varco International |
Oilfield Equipment |
711 |
| 32 |
Seacor SMIT <1> |
Transportation |
665 |
| 33 |
Tuboscope Inc. |
Oilfield Equipment |
650 |
| 34 |
UTI Energy <1> |
Onshore Drilling |
572 |
| 35 |
Grey Wolf <1> |
Onshore Drilling |
558 |
| 36 |
Veritas DSG |
Seismic Services |
554 |
| 37 |
Carbo Ceramics |
Oilfield Equipment |
471 |
| 38 |
Maverick Tube Corp. |
Oilfield Equipment |
469 |
| 39 |
McDermott International |
Diving/Construction |
460 |
| 40 |
Oceaneering International |
Diving/Construction |
375 |
| 41 |
Unit Corporation <2> |
Onshore Drilling |
356 |
| 42 |
Input/Output Inc. |
Seismic Services |
311 |
| 43 |
Parker Drilling Company |
Onshore Drilling |
310 |
| 44 |
Stolt Comex Seaway |
Diving/Construction |
285 |
| 45 |
Offshore Logistics <1> |
Transportation |
269 |
| 46 |
Friede & Goldman |
Oilfield Equipment |
269 |
| 47 |
Trico Marine <1> |
Transportation |
198 |
| 48 |
TETRA Technologies |
Oilfield Equipment |
169 |
| 49 |
Seitel Inc. |
Seismic Services |
158 |
| 50 |
Gulfmark Offshore <1> |
Transportation |
151 |
| 51 |
Gulf Island Fabrication |
Diving/Construction |
148
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