- 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: 254
10-year publication summary
|
19
|
6
|
9
|
19
|
19
|
36
|
39
|
30
|
20
|
7
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20165 |
75 |
| Schlumberger Technology Corporation | 9690 |
15 |
| Saudi Arabian Oil Company | 11322 |
11 |
| Intelligent Wellhead Systems Inc. | 77 |
10 |
| Hunting Titan, Inc. | 240 |
8 |
| Advanced Upstream Ltd. | 35 |
8 |
| Baker Hughes Incorporated | 5689 |
7 |
| Weatherford Technology Holdings, LLC | 2135 |
7 |
| CARBO Ceramics Inc. | 248 |
7 |
| The Charles Machine Works, Inc. | 411 |
7 |
| Baker Hughes Oilfield Operations, LLC | 1885 |
6 |
| Schlumberger Canada Limited | 6913 |
5 |
| Schlumberger Technology B.v. | 4951 |
5 |
| Services Petroliers Schlumberger | 5426 |
5 |
| Schlumberger Holdings Limited | 2947 |
4 |
| Prad Research and Development Limited | 2696 |
4 |
| Scientific Drilling International, Inc. | 161 |
4 |
| Aramco Services Company | 3504 |
3 |
| Cameron International Corporation | 1305 |
3 |
| Magnetic Variation Services, LLC | 34 |
3 |
| Other owners | 57 |