- 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 7/18 - Drilling by liquid or gas jets, with or without entrained pellets
Patent holdings for IPC class E21B 7/18
Total number of patents in this class: 341
10-year publication summary
|
27
|
28
|
43
|
28
|
16
|
14
|
20
|
20
|
24
|
8
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Coiled Tubing Specialties, LLC | 31 |
21 |
| Saudi Arabian Oil Company | 13949 |
13 |
| Shell Internationale Research Maatschappij B.V. | 3440 |
12 |
| Schlumberger Technology Corporation | 11549 |
11 |
| Halliburton Energy Services, Inc. | 21242 |
11 |
| China University of Mining and Technology | 1292 |
11 |
| China University of Petroleum (East China) | 404 |
7 |
| Vermeer Manufacturing Company | 666 |
7 |
| Canopus Drilling Solutions Holding B.V. | 6 |
6 |
| Dig Energy, Inc. | 13 |
6 |
| Petrojet Canada Inc. | 7 |
5 |
| Helmerich & Payne Technologies, LLC | 110 |
5 |
| EarthGrid PBC | 27 |
5 |
| Schlumberger Canada Limited | 7571 |
4 |
| Schlumberger Technology B.v. | 5270 |
4 |
| Ant Applied New Technologies AG | 36 |
4 |
| Aramco Services Company | 4162 |
4 |
| Hypersciences, Inc. | 41 |
4 |
| Services Petroliers Schlumberger | 5981 |
4 |
| Xuzhou Olivine Geoscience & Geotech Co., Ltd | 12 |
4 |
| Other owners | 193 |