E21B 23/12
Tool diverters
E21B23/12 (Tool diverters) appears on 243 US grants and 168 published applications in this corpus.
Search patents in E21B- Granted patents
- 243
- Published applications
- 168
- Assignees
- 74
- Inventors
- 318
- Latest grant
- 5 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 3 | 0 |
| 1981 | 5 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 4 | 0 |
| 1996 | 6 | 0 |
| 1997 | 6 | 0 |
| 1998 | 9 | 0 |
| 1999 | 17 | 0 |
| 2000 | 9 | 0 |
| 2001 | 11 | 2 |
| 2002 | 16 | 15 |
| 2003 | 6 | 3 |
| 2004 | 3 | 0 |
| 2005 | 0 | 3 |
| 2006 | 2 | 2 |
| 2007 | 1 | 0 |
| 2008 | 0 | 2 |
| 2009 | 2 | 2 |
| 2010 | 1 | 6 |
| 2011 | 3 | 6 |
| 2012 | 2 | 6 |
| 2013 | 7 | 9 |
| 2014 | 11 | 8 |
| 2015 | 5 | 14 |
| 2016 | 11 | 14 |
| 2017 | 9 | 5 |
| 2018 | 9 | 10 |
| 2019 | 9 | 10 |
| 2020 | 12 | 9 |
| 2021 | 10 | 14 |
| 2022 | 11 | 9 |
| 2023 | 9 | 11 |
| 2024 | 8 | 4 |
| 2025 | 7 | 4 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Lateral locating assembly having one or more production ports5 May 2026US 12,618,307 B2Halliburton Energy Services.Inc.
- High-pressure multilateral junction with mainbore and lateral access and control2 Sep 2025US 12,404,747 B2Halliburton Energy Services.Inc.
- Whipstock with detachable whipface and sealing capabilities for multilateral systems19 Aug 2025US 12,392,223 B2Halliburton Energy Services.Inc.
- Deployment tool and method12 Aug 2025US 12,385,344 B2Imdex Technologies Pty Ltd
- Pressure indication alignment using an orientation port and orientation slot4 Feb 2025US 12,215,571 B2Halliburton Energy Services.Inc.
- Whipstock with detachable whipface and sealing capabilities for multilateral systems27 Nov 2025US 2025/0361797 A1Halliburton Energy Services.Inc.
- Device, a toolstring, and a method for orientating a downhole tool27 Mar 2025US 2025/0101826 A1Altus Intervention (Technologies) AS
- Lateral locating assembly having one or more production ports27 Feb 2025US 2025/0067151 A1Halliburton Energy Services.Inc.
- Deployment tool and method13 Feb 2025US 2025/0052123 A1Imdex Technologies Pty Ltd
- Deflector-less multilateral system using a buoyant guide sub29 Aug 2024US 2024/0287861 A1Halliburton Energy Services.Inc.
Most cited
By later US patents
- Scoophead running tool180US 5,411,082 ABaker Hughes Incorporated · 1995
- Apparatus and method for performing imaging and downhole operations at a work site in wellbores165US 6,041,860 ABaker Hughes Incorporated · 2000
- Method for multi-lateral completion and cementing the juncture with lateral wellbores113US 5,944,108 ABaker Hughes Incorporated · 1999
- Liner tie-back sleeve108US 5,435,392 ABaker Hughes Incorporated · 1995
- Method for sealing the junctions in multilateral wells108US 6,012,526 ABaker Hughes Incorporated · 2000