E21B 23/03
Apparatus for displacing, setting, locking, releasing or removing tools, packers or the
Official title: for setting the tools into, or removing the tools from, laterally offset landing nipples or pockets
E21B23/03 (Apparatus for displacing, setting, locking, releasing or removing tools, packers or the) appears on 238 US grants and 146 published applications in this corpus.
Search patents in E21B- Granted patents
- 238
- Published applications
- 146
- Assignees
- 76
- Inventors
- 375
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 9 | 0 |
| 1978 | 4 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 5 | 0 |
| 1984 | 7 | 0 |
| 1985 | 11 | 0 |
| 1986 | 4 | 0 |
| 1987 | 5 | 0 |
| 1988 | 8 | 0 |
| 1989 | 6 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 5 | 0 |
| 1996 | 6 | 0 |
| 1997 | 2 | 0 |
| 1998 | 7 | 0 |
| 1999 | 4 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 3 | 2 |
| 2003 | 2 | 2 |
| 2004 | 3 | 5 |
| 2005 | 3 | 2 |
| 2006 | 0 | 0 |
| 2007 | 2 | 1 |
| 2008 | 1 | 0 |
| 2009 | 0 | 3 |
| 2010 | 0 | 0 |
| 2011 | 3 | 1 |
| 2012 | 1 | 1 |
| 2013 | 0 | 4 |
| 2014 | 0 | 2 |
| 2015 | 3 | 2 |
| 2016 | 2 | 1 |
| 2017 | 0 | 2 |
| 2018 | 3 | 2 |
| 2019 | 3 | 5 |
| 2020 | 4 | 17 |
| 2021 | 11 | 15 |
| 2022 | 13 | 22 |
| 2023 | 21 | 11 |
| 2024 | 15 | 27 |
| 2025 | 21 | 13 |
| 2026 | 16 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method of creating an annular zonal isolation seal in a downhole annulus6 Oct 2026US 12,753,679 B2Shell USA, Inc.
- Modified gas assisted plunger lift6 Oct 2026US 12,753,684 B2Silverwell Technology Limited
- Latch coupling including unique axial alignment slots15 Sep 2026US 12,735,952 B2Halliburton Energy Services.Inc.
- Axial position-controlled operation toolstring and method8 Sep 2026US 12,729,595 B2Archer Oiltools AS
- Downhole tool including a bore sensor25 Aug 2026US 12,716,306 B2Halliburton Energy Services.Inc.
- Adjustable inflow control device23 Jul 2026US 2026/0210206 A1Abu Dhabi National Oil Company
- Well tool device preventing backlash of ratchet16 Jul 2026US 2026/0201762 A1Interwell Norway AS
- Biasing piston based equiflow rov for preventing well kick off issue9 Jul 2026US 2026/0193958 A1Halliburton Energy Services.Inc.
- Completing a wellbore with multiple electrical submersible pump docking stations2 Jul 2026US 2026/0185430 A1Saudi Arabian Oil Company
- Latch collet including unique torque buttons19 Feb 2026US 2026/0049531 A1Halliburton Energy Services.Inc.
Most cited
By later US patents
- Method for controlling production wells having permanent downhole formation evaluation sensors241US 5,597,042 ABaker Hughes Incorporated · 1997
- Production wells having permanent downhole formation evaluation sensors163US 5,730,219 ABaker Hughes Incorporated · 1998
- Apparatus and method for retrieving and/or communicating with downhole equipment116US 5,278,550 ASchlumberger Technology Corporation · 1994
- Method for multi-lateral completion and cementing the juncture with lateral wellbores113US 5,944,108 ABaker Hughes Incorporated · 1999
- Lateral connector receptacle112US 5,439,051 ABaker Hughes Incorporated · 1995