- 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 43/267 - Methods for stimulating production by forming crevices or fractures reinforcing fractures by propping
Patent holdings for IPC class E21B 43/267
Total number of patents in this class: 3275
10-year publication summary
|
339
|
308
|
347
|
214
|
186
|
231
|
179
|
126
|
119
|
92
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20944 |
602 |
| Schlumberger Technology Corporation | 10868 |
248 |
| Schlumberger Canada Limited | 7363 |
190 |
| Schlumberger Technology B.v. | 5187 |
164 |
| Services Petroliers Schlumberger | 5827 |
162 |
| Saudi Arabian Oil Company | 13349 |
155 |
| Schlumberger Holdings Limited | 2808 |
88 |
| CARBO Ceramics Inc. | 236 |
81 |
| Baker Hughes Holdings LLC | 3001 |
72 |
| Prad Research and Development Limited | 2692 |
69 |
| BJ Energy Solutions, LLC (formerly TES Asset Acquisition, LLC) | 215 |
54 |
| ExxonMobil Technology and Engineering Company | 1100 |
37 |
| US Well Services LLC | 226 |
36 |
| ConocoPhillips Company | 1675 |
33 |
| Baker Hughes, a GE Company, LLC | 2111 |
29 |
| Aramco Services Company | 4023 |
27 |
| Energy Recovery, Inc. | 176 |
26 |
| Chevron U.S.A. Inc. | 3984 |
25 |
| Baker Hughes Incorporated | 5251 |
24 |
| ExxonMobil Upstream Research Company | 2395 |
24 |
| Other owners | 1129 |