- 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 47/095 - Locating or determining the position of objects in boreholes or wellsIdentifying the free or blocked portions of pipes by detecting acoustic anomalies, e.g. using mud-pressure pulses
Patent holdings for IPC class E21B 47/095
Total number of patents in this class: 204
10-year publication summary
|
1
|
3
|
10
|
12
|
13
|
38
|
23
|
29
|
18
|
10
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20862 |
31 |
| Schlumberger Technology Corporation | 10673 |
20 |
| Saudi Arabian Oil Company | 12997 |
18 |
| Schlumberger Canada Limited | 7283 |
10 |
| Schlumberger Technology B.v. | 5164 |
9 |
| Services Petroliers Schlumberger | 5775 |
9 |
| Baker Hughes Oilfield Operations, LLC | 2289 |
9 |
| BJ Energy Solutions, LLC (formerly TES Asset Acquisition, LLC) | 213 |
9 |
| Cameron International Corporation | 1332 |
8 |
| Momentum AI, LLC | 6 |
6 |
| Seismos Inc. | 42 |
5 |
| Hifi Engineering Inc. | 131 |
3 |
| Merlin Technology, Inc. | 161 |
3 |
| Nabors Drilling Technologies USA, Inc. | 558 |
3 |
| Packers Plus Energy Services Inc. | 121 |
3 |
| Powdermet, Inc. | 45 |
3 |
| Silixa Ltd. | 95 |
3 |
| Baker Hughes, a GE Company, LLC | 2113 |
3 |
| Darkvision Technologies Inc. | 81 |
3 |
| DYNAenergetics Europe GmbH | 246 |
3 |
| Other owners | 43 |