- 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: 339
10-year publication summary
|
4
|
3
|
22
|
34
|
31
|
62
|
34
|
29
|
24
|
18
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20937 |
86 |
| Schlumberger Technology Corporation | 10848 |
24 |
| Saudi Arabian Oil Company | 13316 |
23 |
| Lytt Limited | 51 |
22 |
| BP Exploration Operating Company Limited | 270 |
13 |
| Hifi Engineering Inc. | 131 |
11 |
| Baker Hughes Oilfield Operations, LLC | 2319 |
11 |
| ConocoPhillips Company | 1678 |
10 |
| Darkvision Technologies Inc. | 82 |
10 |
| Schlumberger Canada Limited | 7357 |
6 |
| Merlin Technology, Inc. | 162 |
6 |
| Silixa Ltd. | 95 |
6 |
| Schlumberger Technology B.v. | 5184 |
5 |
| Baker Hughes Incorporated | 5254 |
5 |
| Chevron U.S.A. Inc. | 3981 |
5 |
| Services Petroliers Schlumberger | 5823 |
5 |
| Weatherford Technology Holdings, LLC | 2031 |
4 |
| ExxonMobil Upstream Research Company | 2395 |
4 |
| Aramco Services Company | 4007 |
3 |
| Packers Plus Energy Services Inc. | 121 |
3 |
| Other owners | 77 |