- 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 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: 2550
10-year publication summary
|
208
|
246
|
191
|
175
|
147
|
171
|
142
|
104
|
97
|
26
|
| 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 |
361 |
| Baker Hughes Incorporated | 5689 |
139 |
| Schlumberger Technology Corporation | 9690 |
125 |
| Schlumberger Canada Limited | 6913 |
94 |
| Saudi Arabian Oil Company | 11322 |
94 |
| Weatherford Technology Holdings, LLC | 2135 |
81 |
| Schlumberger Technology B.v. | 4951 |
78 |
| Services Petroliers Schlumberger | 5426 |
78 |
| Baker Hughes, a GE Company, LLC | 2171 |
68 |
| Baker Hughes Holdings LLC | 3060 |
61 |
| Baker Hughes Oilfield Operations, LLC | 1885 |
50 |
| Cameron International Corporation | 1305 |
48 |
| Schlumberger Holdings Limited | 2947 |
41 |
| Welltec AS | 301 |
40 |
| Enventure Global Technology, L.L.C. | 113 |
38 |
| Thru Tubing Solutions, Inc. | 361 |
34 |
| Prad Research and Development Limited | 2696 |
33 |
| Aramco Services Company | 3504 |
30 |
| Qinterra Technologies AS | 38 |
18 |
| Smith International, Inc. | 761 |
14 |
| Other owners | 1025 |