- 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: 333
10-year publication summary
|
8
|
5
|
23
|
35
|
32
|
66
|
40
|
33
|
27
|
14
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20871 |
85 |
| Saudi Arabian Oil Company | 13044 |
23 |
| Schlumberger Technology Corporation | 10691 |
22 |
| Lytt Limited | 50 |
21 |
| BP Exploration Operating Company Limited | 268 |
13 |
| Hifi Engineering Inc. | 131 |
11 |
| Baker Hughes Oilfield Operations, LLC | 2295 |
11 |
| ConocoPhillips Company | 1672 |
10 |
| Darkvision Technologies Inc. | 82 |
10 |
| Schlumberger Canada Limited | 7290 |
6 |
| Merlin Technology, Inc. | 161 |
6 |
| Silixa Ltd. | 95 |
6 |
| Schlumberger Technology B.v. | 5166 |
5 |
| Baker Hughes Incorporated | 5268 |
5 |
| Chevron U.S.A. Inc. | 3951 |
5 |
| Services Petroliers Schlumberger | 5782 |
5 |
| Weatherford Technology Holdings, LLC | 2021 |
4 |
| ExxonMobil Upstream Research Company | 2405 |
4 |
| Aramco Services Company | 3946 |
3 |
| Packers Plus Energy Services Inc. | 121 |
3 |
| Other owners | 75 |