- 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 33/124 - Units with longitudinally-spaced plugs for isolating the intermediate space
Patent holdings for IPC class E21B 33/124
Total number of patents in this class: 825
10-year publication summary
|
96
|
50
|
68
|
64
|
58
|
56
|
81
|
45
|
36
|
19
|
| 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 |
126 |
| Schlumberger Technology Corporation | 10662 |
50 |
| Saudi Arabian Oil Company | 12947 |
48 |
| Baker Hughes Incorporated | 5277 |
40 |
| The Wellboss Company, LLC | 102 |
25 |
| Weatherford Technology Holdings, LLC | 2015 |
22 |
| ExxonMobil Upstream Research Company | 2407 |
22 |
| Welltec Manufacturing Center Completions ApS | 91 |
22 |
| Schlumberger Canada Limited | 7273 |
19 |
| Exacta-Frac Energy Services, Inc. | 55 |
19 |
| Services Petroliers Schlumberger | 5772 |
18 |
| Baker Hughes Holdings LLC | 3005 |
18 |
| Schlumberger Technology B.v. | 5161 |
17 |
| Packers Plus Energy Services Inc. | 121 |
17 |
| Baker Hughes Oilfield Operations, LLC | 2288 |
15 |
| Welltec Oilfield Solutions AG | 66 |
15 |
| Aramco Services Company | 3929 |
14 |
| Welltec AS | 297 |
11 |
| Schlumberger Holdings Limited | 2835 |
9 |
| Baker Hughes, a GE Company, LLC | 2114 |
9 |
| Other owners | 289 |