5.5K
Here is a list of oilfield service companies and how they are ranked in terms of their market capitalization:
1. Schlumberger $62.16 Billion
2. Halliburton $27.79 Billion
3. Baker Hughes A GE Company $26.73 Billion
4. National Oilwell Varco $11.43 Billion
5. TechnipFMC $10.66 Billion
6. Subsea 7 $3.83 Billion
7. Petrofac $1.79 Billion
8. Oceaneering $1.64 Billion
9. Aker Solutions $1.49 Billion
10. McDermott $1.31 Billion
11. Weatherford $859.49 Million
12. Fugro $870.62 Million
13. Superior Energy $684.57 Million