E21B 43/045
Crossover tools
Official title: {Crossover tools}
E21B43/045 (Crossover tools) appears on 332 US grants and 249 published applications in this corpus.
Search patents in E21B- Granted patents
- 332
- Published applications
- 249
- Assignees
- 52
- Inventors
- 465
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 6 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 4 | 0 |
| 1982 | 0 | 0 |
| 1983 | 5 | 0 |
| 1984 | 5 | 0 |
| 1985 | 5 | 0 |
| 1986 | 3 | 0 |
| 1987 | 7 | 0 |
| 1988 | 2 | 0 |
| 1989 | 6 | 0 |
| 1990 | 4 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 7 | 0 |
| 1994 | 6 | 0 |
| 1995 | 5 | 0 |
| 1996 | 2 | 0 |
| 1997 | 8 | 0 |
| 1998 | 6 | 0 |
| 1999 | 7 | 0 |
| 2000 | 2 | 0 |
| 2001 | 11 | 3 |
| 2002 | 10 | 19 |
| 2003 | 13 | 18 |
| 2004 | 17 | 14 |
| 2005 | 4 | 15 |
| 2006 | 13 | 13 |
| 2007 | 10 | 7 |
| 2008 | 8 | 4 |
| 2009 | 5 | 10 |
| 2010 | 5 | 6 |
| 2011 | 4 | 6 |
| 2012 | 9 | 6 |
| 2013 | 5 | 10 |
| 2014 | 5 | 6 |
| 2015 | 7 | 7 |
| 2016 | 11 | 16 |
| 2017 | 5 | 17 |
| 2018 | 15 | 17 |
| 2019 | 16 | 16 |
| 2020 | 16 | 10 |
| 2021 | 14 | 11 |
| 2022 | 10 | 6 |
| 2023 | 5 | 2 |
| 2024 | 5 | 6 |
| 2025 | 6 | 2 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Screen assembly having permeable handling area11 Aug 2026US 12,704,030 B2Weatherford Technology Holdings, LLC
- Gravel pack service tool back pressure valve16 Jun 2026US 12,655,726 B2Halliburton Energy Services.Inc.
- Single trip completion system with open hole gravel pack go/stop pumping17 Mar 2026US 12,577,857 B2Schlumberger Technology Corporation
- Liner deployment tool14 Oct 2025US 12,442,263 B2Weatherford Technology Holdings, LLC
- Flow control tool, method and system30 Sep 2025US 12,428,936 B1Baker Hughes Oilfield Operations LLC
- Gravel pack service tool back pressure valve26 Feb 2026US 2026/0055680 A1Halliburton Energy Services.Inc.
- Open hole gravel pack system for managed pressure drilling (mpd) applications26 Feb 2026US 2026/0055683 A1Halliburton Energy Services.Inc.
- Flow control tool, method and system2 Oct 2025US 2025/0305393 A1Baker Hughes Oilfield Operations LLC
- Single trip completion system with open hole gravel pack go/stop pumping16 Jan 2025US 2025/0020044 A1Schlumberger Technology Corporation
- Screen assembly having permeable handling area11 Jul 2024US 2024/0229610 A1Weatherford Technology Holdings, LLC
Most cited
By later US patents
- System and method for fracturing and gravel packing a borehole192US 7,243,723 B2Halliburton Energy Services.Inc. · 2007
- Gravel packing system181US 5,332,038 ABaker Hughes Incorporated · 1994
- Isolation washpipe for earth well completions and method for use in gravel packing a well170US 5,343,949 AHalliburton Company · 1994
- Sand control screen assembly and treatment method using the same152US 7,096,945 B2Halliburton Energy Services.Inc. · 2006
- Well screen having internal shunt tubes135US 5,515,915 AMobil Oil Corporation · 1996