- 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 23/00 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
Patent holdings for IPC class E21B 23/00
Total number of patents in this class: 2655
10-year publication summary
|
191
|
175
|
147
|
172
|
145
|
107
|
106
|
91
|
107
|
63
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21318 |
398 |
| Schlumberger Technology Corporation | 11857 |
140 |
| Saudi Arabian Oil Company | 14296 |
129 |
| Baker Hughes Incorporated | 4916 |
126 |
| Schlumberger Canada Limited | 7613 |
92 |
| Weatherford Technology Holdings, LLC | 2162 |
88 |
| Schlumberger Technology B.v. | 5297 |
79 |
| Services Petroliers Schlumberger | 6029 |
79 |
| Baker Hughes, a GE Company, LLC | 2051 |
68 |
| Baker Hughes Oilfield Operations, LLC | 2539 |
66 |
| Baker Hughes Holdings LLC | 3024 |
54 |
| Cameron International Corporation | 1365 |
48 |
| Welltec AS | 318 |
47 |
| Thru Tubing Solutions, Inc. | 404 |
39 |
| Aramco Services Company | 4193 |
38 |
| Schlumberger Holdings Limited | 2686 |
37 |
| Prad Research and Development Limited | 2654 |
33 |
| Enventure Global Technology, L.L.C. | 79 |
21 |
| Qinterra Technologies AS | 34 |
17 |
| NCS Multistage Inc. | 171 |
14 |
| Other owners | 1042 |