- 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 43/32 - Preventing gas- or water-coning phenomena, i.e. the formation of a conical column of gas or water around wells
Patent holdings for IPC class E21B 43/32
Total number of patents in this class: 147
10-year publication summary
|
4
|
10
|
14
|
10
|
12
|
4
|
7
|
0
|
2
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 21230 |
21 |
| Saudi Arabian Oil Company | 13948 |
14 |
| Statoil Petroleum AS | 475 |
9 |
| Schlumberger Canada Limited | 7564 |
6 |
| Schlumberger Technology B.v. | 5269 |
6 |
| Schlumberger Holdings Limited | 2733 |
6 |
| Prad Research and Development Limited | 2679 |
6 |
| Services Petroliers Schlumberger | 5979 |
6 |
| Swellfix UK Limited | 60 |
5 |
| Baker Hughes Incorporated | 5038 |
4 |
| Hydra Systems AS | 48 |
4 |
| InflowControl AS | 24 |
4 |
| Schlumberger Technology Corporation | 11522 |
3 |
| Aramco Services Company | 4162 |
3 |
| Inflow Control AS | 3 |
3 |
| Thru Tubing Solutions, Inc. | 394 |
2 |
| Baker Hughes, a GE Company, LLC | 2093 |
2 |
| CURTIS, Philip, Anthony | 348 |
2 |
| Sergeev, Vitalii Vyacheslavovich | 7 |
2 |
| Vyacheslavovich Sergeev, Vitalii | 2 |
2 |
| Other owners | 37 |