E21B 47/009
Monitoring of walking-beam pump systems
E21B47/009 (Monitoring of walking-beam pump systems) appears on 229 US grants and 186 published applications in this corpus.
Search patents in E21B- Granted patents
- 229
- Published applications
- 186
- Assignees
- 123
- Inventors
- 391
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 4 | 0 |
| 1985 | 5 | 0 |
| 1986 | 5 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 6 | 0 |
| 1992 | 2 | 0 |
| 1993 | 6 | 0 |
| 1994 | 4 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 4 | 2 |
| 2002 | 3 | 0 |
| 2003 | 4 | 4 |
| 2004 | 1 | 0 |
| 2005 | 1 | 3 |
| 2006 | 1 | 3 |
| 2007 | 1 | 4 |
| 2008 | 1 | 0 |
| 2009 | 2 | 1 |
| 2010 | 1 | 4 |
| 2011 | 2 | 3 |
| 2012 | 2 | 2 |
| 2013 | 2 | 10 |
| 2014 | 2 | 3 |
| 2015 | 7 | 17 |
| 2016 | 5 | 9 |
| 2017 | 12 | 21 |
| 2018 | 16 | 7 |
| 2019 | 19 | 13 |
| 2020 | 12 | 19 |
| 2021 | 11 | 15 |
| 2022 | 11 | 10 |
| 2023 | 16 | 12 |
| 2024 | 6 | 9 |
| 2025 | 10 | 8 |
| 2026 | 4 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Apparatus for rotating a sucker rod string having a position indicator16 Jun 2026US 12,658,021 B2
- Method, analysis device and pumping system for detecting an oil leak in a beam pump10 Feb 2026US 12,546,207 B2Siemens Energy Global GmbH & Co. KG
- Apparatus for affixing a rotation sensor to a rod lift system10 Feb 2026US 12,546,208 B2
- Method for autonomous control of oil and gas well down-hole pump surface unit and reduction of gas interference20 Jan 2026US 12,529,373 B1
- Devices, systems, and methods for detecting the rotation of one or more components for use with a wellbore4 Nov 2025US 12,460,537 B2ChampionX LLC
- Apparatus for rotating a sucker rod string having a position indicator8 Oct 2026US 2026/0311586 A1
- System and Method for Non-Magnetic and Touchless Sucker Rod Inspection and Evaluation1 Oct 2026US 2026/0298073 A1
- System and Method for Monitoring Rod Rotation and Position Using RF Signal Characteristics28 May 2026US 2026/0146526 A1
- Wireless load cell9 Apr 2026US 2026/0098471 A1
- Apparatus for rotating a sucker rod string having a position indicator26 Mar 2026US 2026/0087924 A1
Most cited
By later US patents
- Method and system for controlling a mechanical pump to monitor and optimize both reservoir and equipment performance192US 5,006,044 A1991
- Method and system for controlling a mechanical pump to monitor and optimize both reservoir and equipment performance170US 5,222,867 A1993
- Control apparatus and method for an oil-well pump assembly141US 4,390,321 AAmerican Davidson, Inc. · 1983
- Pump control responsive to voltage-current phase angle138US 5,362,206 AAutomation Associates, Inc. · 1994
- Apparatus for detecting changes in inclination or acceleration132US 4,561,299 AFMC Corporation · 1985