- All sections
- E - Fixed constructions
- E21B - Earth or rock drillingobtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B 37/00 - Methods or apparatus for cleaning boreholes or wells
Patent holdings for IPC class E21B 37/00
Total number of patents in this class: 1086
10-year publication summary
|
115
|
101
|
90
|
82
|
93
|
75
|
54
|
47
|
61
|
22
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21296 |
144 |
| Saudi Arabian Oil Company | 14329 |
110 |
| Schlumberger Technology Corporation | 11893 |
51 |
| Baker Hughes Incorporated | 4903 |
37 |
| Hydra Systems AS | 48 |
28 |
| Baker Hughes Holdings LLC | 3015 |
28 |
| Schlumberger Canada Limited | 7627 |
23 |
| Services Petroliers Schlumberger | 6038 |
23 |
| Baker Hughes Oilfield Operations, LLC | 2551 |
22 |
| Baker Hughes, a GE Company, LLC | 2049 |
22 |
| Schlumberger Technology B.v. | 5302 |
21 |
| Aramco Services Company | 4192 |
18 |
| ConocoPhillips Company | 1716 |
18 |
| Weatherford Technology Holdings, LLC | 2161 |
17 |
| Odfjell Well Services Norway AS | 19 |
15 |
| Petroleo Brasileiro S.A. - Petrobras | 973 |
15 |
| M-I L.L.C. | 737 |
14 |
| Welltec AS | 321 |
12 |
| Altus Intervention (technologies) AS | 53 |
12 |
| Schlumberger Holdings Limited | 2683 |
11 |
| Other owners | 445 |