E21B 17/1078
Stabilisers or centralisers for casing, tubing or drill pipes
Official title: {Stabilisers or centralisers for casing, tubing or drill pipes (E21B17/1007 - E21B17/1064 take precedence)}
E21B17/1078 (Stabilisers or centralisers for casing, tubing or drill pipes) appears on 829 US grants and 800 published applications in this corpus.
Search patents in E21B- Granted patents
- 829
- Published applications
- 800
- Assignees
- 361
- Inventors
- 1,400
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 5 | 0 |
| 1978 | 11 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 9 | 0 |
| 1982 | 2 | 0 |
| 1983 | 8 | 0 |
| 1984 | 9 | 0 |
| 1985 | 3 | 0 |
| 1986 | 5 | 0 |
| 1987 | 7 | 0 |
| 1988 | 6 | 0 |
| 1989 | 10 | 0 |
| 1990 | 1 | 0 |
| 1991 | 4 | 0 |
| 1992 | 7 | 0 |
| 1993 | 6 | 0 |
| 1994 | 8 | 0 |
| 1995 | 5 | 0 |
| 1996 | 4 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 6 | 0 |
| 2000 | 5 | 0 |
| 2001 | 5 | 3 |
| 2002 | 4 | 1 |
| 2003 | 4 | 3 |
| 2004 | 3 | 7 |
| 2005 | 2 | 12 |
| 2006 | 7 | 11 |
| 2007 | 10 | 5 |
| 2008 | 4 | 7 |
| 2009 | 1 | 9 |
| 2010 | 7 | 21 |
| 2011 | 9 | 21 |
| 2012 | 11 | 20 |
| 2013 | 14 | 26 |
| 2014 | 24 | 41 |
| 2015 | 25 | 85 |
| 2016 | 47 | 75 |
| 2017 | 53 | 71 |
| 2018 | 63 | 66 |
| 2019 | 67 | 60 |
| 2020 | 82 | 65 |
| 2021 | 59 | 53 |
| 2022 | 51 | 35 |
| 2023 | 44 | 39 |
| 2024 | 37 | 23 |
| 2025 | 32 | 27 |
| 2026 | 21 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Modular anti-rotation drilling systems and methods actuated by fluid pressure29 Sep 2026US 12,747,654 B1National Technology & Engineering Solutions of Sandia, LLC
- Systems and methods for estimating depth of wellbore survey measurements15 Sep 2026US 12,735,980 B1Schlumberger Technology Corporation
- Lead-free metallic barrier coatings for copper and zinc-rich surfaces of subterranean hardware and components8 Sep 2026US 12,729,443 B2Schlumberger Technology Corporation
- Sinker bar with centralizer18 Aug 2026US 12,709,949 B2360 Research Labs, LLC
- Cleaning tool and method18 Aug 2026US 12,709,963 B2Cortrax Global Limited
- Work string tubing connection restoration24 Sep 2026US 2026/0284768 A1Postle Industries, Inc.
- Alignment system and methodology utilizing rotating control device17 Sep 2026US 2026/0275817 A1Schlumberger Technology Corporation
- Completions-based well cleanout using magnetic cleanout tool30 Jul 2026US 2026/0218587 A1Halliburton Energy Services.Inc.
- Alignable guidance device for casing entry milling operations16 Jul 2026US 2026/0201757 A1Scientific Drilling International, Inc.
- Line shaft pump for extracting a fluid from a geothermal well16 Jul 2026US 2026/0201896 A1Sulzer Management AG
Most cited
By later US patents
- Composite drill pipe201US 5,332,049 ABrunswick Corporation · 1994
- Autonomous downhole oilfield tool191US 6,378,627 B1Intelligent Inspection Corporation · 2002
- Well logging apparatus having toroidal induction antenna for measuring, while drilling, resistivity of earth formations158US 5,235,285 ASchlumberger Technology Corporation · 1993
- Integrated directional under-reamer and stabilizer136US 6,059,051 ABaker Hughes Incorporated · 2000
- Casing shoe with cutting means135US 6,062,326 AEnterprise Oil plc · 2000