- 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 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: 795
10-year publication summary
|
118
|
96
|
50
|
68
|
64
|
58
|
56
|
79
|
40
|
14
|
| 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 |
113 |
| Saudi Arabian Oil Company | 11322 |
49 |
| Baker Hughes Incorporated | 5689 |
43 |
| Schlumberger Technology Corporation | 9690 |
42 |
| Welltec Oilfield Solutions AG | 140 |
36 |
| The Wellboss Company, LLC | 96 |
24 |
| Weatherford Technology Holdings, LLC | 2135 |
23 |
| ExxonMobil Upstream Research Company | 2525 |
22 |
| Exacta-Frac Energy Services, Inc. | 56 |
19 |
| Baker Hughes Holdings LLC | 3060 |
18 |
| Packers Plus Energy Services Inc. | 120 |
17 |
| Schlumberger Canada Limited | 6913 |
16 |
| Schlumberger Technology B.v. | 4951 |
16 |
| Services Petroliers Schlumberger | 5426 |
16 |
| Aramco Services Company | 3504 |
14 |
| Baker Hughes Oilfield Operations, LLC | 1885 |
12 |
| Welltec AS | 301 |
11 |
| Schlumberger Holdings Limited | 2947 |
9 |
| Baker Hughes, a GE Company, LLC | 2171 |
9 |
| Bisn Tec Ltd | 74 |
8 |
| Other owners | 278 |