- 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 47/107 - Locating fluid leaks, intrusions or movements using acoustic means
Patent holdings for IPC class E21B 47/107
Total number of patents in this class: 357
10-year publication summary
|
5
|
23
|
35
|
33
|
66
|
40
|
33
|
27
|
30
|
7
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21257 |
94 |
| Schlumberger Technology Corporation | 11584 |
25 |
| Saudi Arabian Oil Company | 13956 |
23 |
| Lytt Limited | 49 |
21 |
| BP Exploration Operating Company Limited | 258 |
13 |
| Baker Hughes Oilfield Operations, LLC | 2480 |
12 |
| ConocoPhillips Company | 1697 |
11 |
| Hifi Engineering Inc. | 137 |
11 |
| Darkvision Technologies Inc. | 86 |
9 |
| Schlumberger Canada Limited | 7588 |
7 |
| Chevron U.S.A. Inc. | 4117 |
7 |
| Schlumberger Technology B.v. | 5282 |
6 |
| Merlin Technology, Inc. | 165 |
6 |
| Services Petroliers Schlumberger | 5996 |
6 |
| Silixa Ltd. | 84 |
6 |
| Baker Hughes Incorporated | 5018 |
5 |
| Weatherford Technology Holdings, LLC | 2072 |
5 |
| ExxonMobil Upstream Research Company | 2331 |
4 |
| Archer Oiltools AS | 45 |
4 |
| Aramco Services Company | 4162 |
3 |
| Other owners | 79 |