- 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: 767
10-year publication summary
|
38
|
35
|
37
|
49
|
49
|
40
|
35
|
35
|
36
|
26
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20944 |
97 |
| Schlumberger Technology Corporation | 10868 |
61 |
| Saudi Arabian Oil Company | 13349 |
52 |
| Schlumberger Canada Limited | 7363 |
39 |
| Services Petroliers Schlumberger | 5827 |
35 |
| Welltec AS | 299 |
35 |
| Schlumberger Technology B.v. | 5187 |
33 |
| Schlumberger Holdings Limited | 2808 |
25 |
| Prad Research and Development Limited | 2692 |
22 |
| Baker Hughes Incorporated | 5251 |
21 |
| Petromac IP Limited | 39 |
19 |
| Aramco Services Company | 4023 |
15 |
| Altus Intervention (technologies) AS | 66 |
12 |
| Qinterra Technologies AS | 38 |
11 |
| Baker Hughes Oilfield Operations, LLC | 2320 |
11 |
| Well Conveyor AS | 13 |
11 |
| Weatherford Technology Holdings, LLC | 2029 |
9 |
| Well-sense Technology Limited | 24 |
9 |
| Coiled Tubing Specialties, LLC | 31 |
8 |
| Impact Selector International, LLC | 112 |
7 |
| Other owners | 235 |