E21B 23/01
Apparatus for displacing, setting, locking, releasing or removing tools, packers or the
Official title: for anchoring the tools or the like (E21B23/02 - E21B23/06 take precedence; anchoring of drives in the borehole E21B4/18)
E21B23/01 (Apparatus for displacing, setting, locking, releasing or removing tools, packers or the) appears on 1,349 US grants and 1,267 published applications in this corpus.
Search patents in E21B- Granted patents
- 1,349
- Published applications
- 1,267
- Assignees
- 342
- Inventors
- 1,861
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 5 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 7 | 0 |
| 1983 | 2 | 0 |
| 1984 | 4 | 0 |
| 1985 | 5 | 0 |
| 1986 | 9 | 0 |
| 1987 | 12 | 0 |
| 1988 | 6 | 0 |
| 1989 | 7 | 0 |
| 1990 | 11 | 0 |
| 1991 | 15 | 0 |
| 1992 | 6 | 0 |
| 1993 | 14 | 0 |
| 1994 | 19 | 0 |
| 1995 | 18 | 0 |
| 1996 | 15 | 0 |
| 1997 | 10 | 0 |
| 1998 | 15 | 0 |
| 1999 | 15 | 0 |
| 2000 | 15 | 0 |
| 2001 | 19 | 3 |
| 2002 | 15 | 22 |
| 2003 | 21 | 20 |
| 2004 | 17 | 20 |
| 2005 | 20 | 22 |
| 2006 | 16 | 15 |
| 2007 | 19 | 17 |
| 2008 | 16 | 20 |
| 2009 | 20 | 22 |
| 2010 | 17 | 21 |
| 2011 | 23 | 29 |
| 2012 | 14 | 39 |
| 2013 | 15 | 41 |
| 2014 | 32 | 55 |
| 2015 | 57 | 98 |
| 2016 | 47 | 96 |
| 2017 | 71 | 90 |
| 2018 | 88 | 118 |
| 2019 | 107 | 78 |
| 2020 | 97 | 77 |
| 2021 | 98 | 93 |
| 2022 | 75 | 59 |
| 2023 | 63 | 57 |
| 2024 | 47 | 58 |
| 2025 | 73 | 66 |
| 2026 | 45 | 31 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Systems and methods for attached-anchored casing stub repair6 Oct 2026US 12,753,678 B2Saudi Arabian Oil Company
- Latch coupling including unique axial alignment slots15 Sep 2026US 12,735,952 B2Halliburton Energy Services.Inc.
- Apparatus and method for milling openings in an uncemented blank pipe8 Sep 2026US 12,729,612 B2Saudi Arabian Oil Company
- Composite joint with casing exit locator1 Sep 2026US 12,723,482 B2Schlumberger Technology Corporation
- Long string workover operations completions tool with an annular release mechanism25 Aug 2026US 12,716,305 B1Saudi Arabian Oil Company
- Resettable, retrievable multi-size donut seal8 Oct 2026US 2026/0308999 A1Halliburton Energy Services.Inc.
- Cylinder-less high pressure and high temperature liner hanger24 Sep 2026US 2026/0286795 A1
- Two part milling and running tool employing a body lock ring17 Sep 2026US 2026/0275830 A1Halliburton Energy Services.Inc.
- Multi-mode automation method for well intervention applications27 Aug 2026US 2026/0251027 A1Halliburton Energy Services.Inc.
- Linear mechanical system control using motor characteristics and features27 Aug 2026US 2026/0251028 A1Halliburton Energy Services.Inc.
Most cited
By later US patents
- Tools and methods for use with expandable tubulars320US 6,325,148 B1Weatherford/Lamb, Inc. · 2001
- Sand control adapter232US 5,052,483 ABestline Liner Systems · 1991
- Wellbore milling and drilling190US 5,887,655 AWeatherford/Lamb, Inc. · 1999
- Downhole anchoring tools conveyed by non-rigid carriers190US 6,315,043 B1Schlumberger Technology Corporation · 2001
- Deformable member175US 6,896,049 B2Zeroth Technology Ltd. · 2005