- All sections
- E - Fixed constructions
- E21B - Earth or rock drilling; obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B 47/092 - Locating or determining the position of objects in boreholes or wells; Identifying the free or blocked portions of pipes by detecting magnetic anomalies
Patent holdings for IPC class E21B 47/092
Total number of patents in this class: 264
10-year publication summary
|
6
|
9
|
19
|
19
|
36
|
39
|
30
|
21
|
17
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20403 |
79 |
| Schlumberger Technology Corporation | 10217 |
15 |
| Saudi Arabian Oil Company | 12390 |
12 |
| Intelligent Wellhead Systems Inc. | 81 |
10 |
| The Charles Machine Works, Inc. | 416 |
8 |
| Hunting Titan, Inc. | 244 |
8 |
| Advanced Upstream Ltd. | 40 |
8 |
| Baker Hughes Incorporated | 5514 |
7 |
| Weatherford Technology Holdings, LLC | 2107 |
7 |
| CARBO Ceramics Inc. | 246 |
6 |
| Baker Hughes Oilfield Operations, LLC | 2105 |
6 |
| Schlumberger Canada Limited | 7137 |
5 |
| Schlumberger Technology B.v. | 5058 |
5 |
| Services Petroliers Schlumberger | 5616 |
5 |
| Schlumberger Holdings Limited | 2870 |
4 |
| Prad Research and Development Limited | 2696 |
4 |
| Scientific Drilling International, Inc. | 164 |
4 |
| Aramco Services Company | 3735 |
3 |
| Cameron International Corporation | 1322 |
3 |
| Magnetic Variation Services, LLC | 37 |
3 |
| Other owners | 62 |