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Top 29 largest Companies in the Oil & Gas Drilling industry in the World by Market Cap

This is the list of the largest public listed companies in the Oil & Gas Drilling industry in the world by market capitalization with links to their reference stock.

World Oil & Gas Drilling Industry Analysis
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Top Oil & Gas Drilling Companies in the World as of Jul. 01, 2025

Rank Company Market Cap (USD) Country Sector Industry
1 Sinopec Oilfield Service Corp $4.20 B China Chinese Energy Chinese Oil & Gas Drilling
2 Seadrill Ltd $3.52 B

(July 1, 2024)

 Bermuda Bermuda Energy Bermuda Oil & Gas Drilling
3 Transocean Ltd. $2.45 B Switzerland Swiss Energy Swiss Oil & Gas Drilling
4 Patterson-UTI Energy, Inc. $2.44 B United States US Energy US Oil & Gas Drilling
5 Drilling Co of 1972 A-S-The $2.03 B

(Oct. 1, 2022)

 Denmark Danish Energy Danish Oil & Gas Drilling
6 Odfjell Drilling Ltd $1.67 B United Kingdom UK Energy UK Oil & Gas Drilling
7 Helmerich & Payne, Inc. $1.63 B United States US Energy US Oil & Gas Drilling
8 Precision Drilling Corporation $679.3 M Canada Canadian Energy Canadian Oil & Gas Drilling
9 Public Joint Stock Company Varyoganneftegaz $538.2 M Russia Russian Energy Russian Oil & Gas Drilling
10 Borr Drilling Limited $504.9 M Bermuda Bermuda Energy Bermuda Oil & Gas Drilling
11 Nabors Industries Ltd. $489.2 M Bermuda Bermuda Energy Bermuda Oil & Gas Drilling
12 Shelf Drilling Ltd $439.1 M

(July 1, 2024)

 United Arab Emirates United Arab Emirates Energy United Arab Emirates Oil & Gas Drilling
13 Ipek Dogal Enerji Kaynaklari Arastirma ve Üretim A.S. $411.6 M Turkey Turkish Energy Turkish Oil & Gas Drilling
14 Ensign Energy Services Inc. $306.0 M Canada Canadian Energy Canadian Oil & Gas Drilling
15 PHX Energy Services Corp. $274.8 M Canada Canadian Energy Canadian Oil & Gas Drilling
16 Northern Ocean Ltd $174.4 M Bermuda Bermuda Energy Bermuda Oil & Gas Drilling
17 Vantage Drilling International $160.2 M United States US Energy US Oil & Gas Drilling
18 Cathedral Energy Services Ltd. $159.4 M

(July 1, 2024)

 Canada Canadian Energy Canadian Oil & Gas Drilling
19 Daldrup & Soehne AG $95.4 M Germany German Energy German Oil & Gas Drilling
20 Western Energy Services Corp. $58.8 M Canada Canadian Energy Canadian Oil & Gas Drilling
21 Archer Ltd $4.8 M

(July 1, 2024)

 Bermuda Bermuda Energy Bermuda Oil & Gas Drilling
22 Bowleven plc $4.8 M

(July 1, 2024)

 United Kingdom UK Energy UK Oil & Gas Drilling
23 TomCo Energy plc $2.0 M United Kingdom UK Energy UK Oil & Gas Drilling
24 Diamond Offshore Drilling Inc United States US Energy US Oil & Gas Drilling
25 Petrominerals Corp United States US Energy US Oil & Gas Drilling
26 Noble Corp plc United States US Energy US Oil & Gas Drilling
27 Beard Co. (The) United States US Energy US Oil & Gas Drilling
28 Anglo African Oil & Gas plc United Kingdom UK Energy UK Oil & Gas Drilling
29 Justiss Oil Co., Inc. United States US Energy US Oil & Gas Drilling

Top Oil & Gas Drilling Companies in the World as of Jul. 01, 2025

1. Sinopec Oilfield Service Corp

Company Profile: Sinopec Oilfield Service Corp
Market Cap (USD): $4.20 B
Country: China
Sector: Chinese Energy
Industry: Chinese Oil & Gas Drilling

2. Seadrill Ltd

Company Profile: Seadrill Ltd
Market Cap (USD): $3.52 B (July 1, 2024)
Country: Bermuda
Sector: Bermuda Energy
Industry: Bermuda Oil & Gas Drilling

3. Transocean Ltd.

Company Profile: Transocean Ltd.
Market Cap (USD): $2.45 B
Country: Switzerland
Sector: Swiss Energy
Industry: Swiss Oil & Gas Drilling

4. Patterson-UTI Energy, Inc.

Company Profile: Patterson-UTI Energy, Inc.
Market Cap (USD): $2.44 B
Country: United States
Sector: US Energy
Industry: US Oil & Gas Drilling

5. Drilling Co of 1972 A-S-The

Company Profile: Drilling Co of 1972 A-S-The
Market Cap (USD): $2.03 B (Oct. 1, 2022)
Country: Denmark
Sector: Danish Energy
Industry: Danish Oil & Gas Drilling

6. Odfjell Drilling Ltd

Company Profile: Odfjell Drilling Ltd
Market Cap (USD): $1.67 B
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas Drilling

7. Helmerich & Payne, Inc.

Company Profile: Helmerich & Payne, Inc.
Market Cap (USD): $1.63 B
Country: United States
Sector: US Energy
Industry: US Oil & Gas Drilling

8. Precision Drilling Corporation

Company Profile: Precision Drilling Corporation
Market Cap (USD): $679.3 M
Country: Canada
Sector: Canadian Energy
Industry: Canadian Oil & Gas Drilling

9. Public Joint Stock Company Varyoganneftegaz

Company Profile: Public Joint Stock Company Varyoganneftegaz
Market Cap (USD): $538.2 M
Country: Russia
Sector: Russian Energy
Industry: Russian Oil & Gas Drilling

10. Borr Drilling Limited

Company Profile: Borr Drilling Limited
Market Cap (USD): $504.9 M
Country: Bermuda
Sector: Bermuda Energy
Industry: Bermuda Oil & Gas Drilling

11. Nabors Industries Ltd.

Company Profile: Nabors Industries Ltd.
Market Cap (USD): $489.2 M
Country: Bermuda
Sector: Bermuda Energy
Industry: Bermuda Oil & Gas Drilling

12. Shelf Drilling Ltd

Company Profile: Shelf Drilling Ltd
Market Cap (USD): $439.1 M (July 1, 2024)
Country: United Arab Emirates
Sector: United Arab Emirates Energy
Industry: United Arab Emirates Oil & Gas Drilling

13. Ipek Dogal Enerji Kaynaklari Arastirma ve Üretim A.S.

Company Profile: Ipek Dogal Enerji Kaynaklari Arastirma ve Üretim A.S.
Market Cap (USD): $411.6 M
Country: Turkey
Sector: Turkish Energy
Industry: Turkish Oil & Gas Drilling

14. Ensign Energy Services Inc.

Company Profile: Ensign Energy Services Inc.
Market Cap (USD): $306.0 M
Country: Canada
Sector: Canadian Energy
Industry: Canadian Oil & Gas Drilling

15. PHX Energy Services Corp.

Company Profile: PHX Energy Services Corp.
Market Cap (USD): $274.8 M
Country: Canada
Sector: Canadian Energy
Industry: Canadian Oil & Gas Drilling

16. Northern Ocean Ltd

Company Profile: Northern Ocean Ltd
Market Cap (USD): $174.4 M
Country: Bermuda
Sector: Bermuda Energy
Industry: Bermuda Oil & Gas Drilling

17. Vantage Drilling International

Company Profile: Vantage Drilling International
Market Cap (USD): $160.2 M
Country: United States
Sector: US Energy
Industry: US Oil & Gas Drilling

18. Cathedral Energy Services Ltd.

Company Profile: Cathedral Energy Services Ltd.
Market Cap (USD): $159.4 M (July 1, 2024)
Country: Canada
Sector: Canadian Energy
Industry: Canadian Oil & Gas Drilling

19. Daldrup & Soehne AG

Company Profile: Daldrup & Soehne AG
Market Cap (USD): $95.4 M
Country: Germany
Sector: German Energy
Industry: German Oil & Gas Drilling

20. Western Energy Services Corp.

Company Profile: Western Energy Services Corp.
Market Cap (USD): $58.8 M
Country: Canada
Sector: Canadian Energy
Industry: Canadian Oil & Gas Drilling

21. Archer Ltd

Company Profile: Archer Ltd
Market Cap (USD): $4.8 M (July 1, 2024)
Country: Bermuda
Sector: Bermuda Energy
Industry: Bermuda Oil & Gas Drilling

22. Bowleven plc

Company Profile: Bowleven plc
Market Cap (USD): $4.8 M (July 1, 2024)
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas Drilling

23. TomCo Energy plc

Company Profile: TomCo Energy plc
Market Cap (USD): $2.0 M
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas Drilling

24. Diamond Offshore Drilling Inc

Company Profile: Diamond Offshore Drilling Inc
Country: United States
Sector: US Energy
Industry: US Oil & Gas Drilling

25. Petrominerals Corp

Company Profile: Petrominerals Corp
Country: United States
Sector: US Energy
Industry: US Oil & Gas Drilling

26. Noble Corp plc

Company Profile: Noble Corp plc
Country: United States
Sector: US Energy
Industry: US Oil & Gas Drilling

27. Beard Co. (The)

Company Profile: Beard Co. (The)
Country: United States
Sector: US Energy
Industry: US Oil & Gas Drilling

28. Anglo African Oil & Gas plc

Company Profile: Anglo African Oil & Gas plc
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas Drilling

29. Justiss Oil Co., Inc.

Company Profile: Justiss Oil Co., Inc.
Country: United States
Sector: US Energy
Industry: US Oil & Gas Drilling

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