- 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 23/14 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for displacing a cable or a cable-operated tool, e.g. for logging or perforating operations in deviated wells
Patent holdings for IPC class E21B 23/14
Total number of patents in this class: 763
10-year publication summary
|
44
|
44
|
41
|
61
|
56
|
46
|
41
|
40
|
36
|
22
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20835 |
95 |
| Schlumberger Technology Corporation | 10662 |
61 |
| Saudi Arabian Oil Company | 12947 |
51 |
| Schlumberger Canada Limited | 7273 |
39 |
| Services Petroliers Schlumberger | 5772 |
35 |
| Welltec AS | 297 |
35 |
| Schlumberger Technology B.v. | 5161 |
33 |
| Schlumberger Holdings Limited | 2835 |
25 |
| Prad Research and Development Limited | 2693 |
22 |
| Baker Hughes Incorporated | 5277 |
21 |
| Petromac IP Limited | 38 |
18 |
| Aramco Services Company | 3929 |
15 |
| Altus Intervention (technologies) AS | 65 |
12 |
| Qinterra Technologies AS | 38 |
11 |
| Well Conveyor AS | 13 |
11 |
| Baker Hughes Oilfield Operations, LLC | 2288 |
10 |
| Weatherford Technology Holdings, LLC | 2015 |
9 |
| Well-sense Technology Limited | 23 |
9 |
| Coiled Tubing Specialties, LLC | 31 |
8 |
| Impact Selector International, LLC | 114 |
7 |
| Other owners | 236 |