Patent holdings for IPC class E21B 37/08

Total number of patents in this class: 211

10-year publication summary

16
15
13
17
9
21
16
12
15
10
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Principal owners for this class

Owner
All patents
This class
Halliburton Energy Services, Inc.
20991
41
Saudi Arabian Oil Company
13442
14
Schlumberger Technology Corporation
10930
12
Baker Hughes Oilfield Operations, LLC
2344
8
Hydra Systems AS
37
7
Baker Hughes Incorporated
5238
6
M-I L.L.C.
809
6
Schlumberger Canada Limited
7383
5
ConocoPhillips Company
1682
5
Subsurface Technologies, Inc.
14
5
Baker Hughes Holdings LLC
3015
5
Schlumberger Technology B.v.
5191
4
Services Petroliers Schlumberger
5838
4
Geodynamics, Inc.
195
3
Optimum Petroleum Services Inc.
8
3
Weatherford U.K. Limited
71
3
Comitt Well Solutions LLC
28
3
Altus Intervention AS
20
2
Archer Oil Tools AS
17
2
ExxonMobil Upstream Research Company
2389
2
Other owners 71