E21B 10/265
Bi-center drill bits, i.e. an integral bit and eccentric reamer used to
Official title: {Bi-center drill bits, i.e. an integral bit and eccentric reamer used to simultaneously drill and underream the hole}
E21B10/265 (Bi-center drill bits, i.e. an integral bit and eccentric reamer used to) appears on 75 US grants and 59 published applications in this corpus.
Search patents in E21B- Granted patents
- 75
- Published applications
- 59
- Assignees
- 47
- Inventors
- 169
- Latest grant
- 9 Jul 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 2 |
| 2002 | 6 | 5 |
| 2003 | 6 | 1 |
| 2004 | 1 | 4 |
| 2005 | 3 | 2 |
| 2006 | 2 | 2 |
| 2007 | 3 | 3 |
| 2008 | 2 | 1 |
| 2009 | 1 | 1 |
| 2010 | 3 | 4 |
| 2011 | 2 | 2 |
| 2012 | 0 | 2 |
| 2013 | 1 | 0 |
| 2014 | 1 | 6 |
| 2015 | 2 | 3 |
| 2016 | 3 | 2 |
| 2017 | 1 | 2 |
| 2018 | 3 | 5 |
| 2019 | 3 | 3 |
| 2020 | 2 | 1 |
| 2021 | 4 | 1 |
| 2022 | 3 | 4 |
| 2023 | 2 | 2 |
| 2024 | 2 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Cutter head arrangement9 Jul 2024US 12,031,438 B2Master Sinkers (Pty) Ltd.
- Modular reamer26 Mar 2024US 11,939,818 B2T.J. Technology 2020 Inc.
- Methods and apparatus for printing a wellbore casing12 Dec 2023US 11,840,904 B2Saudi Arabian Oil Company
- Horizontal directional reaming25 Jul 2023US 11,708,726 B2Quanta Associates, L. P.
- Milling packers below restrictions in a wellbore casing20 Sep 2022US 11,448,028 B2Saudi Arabian Oil Company
- Reamer for horizontal directional drilling18 Jun 2026US 2026/0168332 A1Michels Corporation
- Methods and apparatus for printing a wellbore casing31 Aug 2023US 2023/0272690 A1Saudi Arabian Oil Company
- Modular Reamer1 Jun 2023US 2023/0167690 A1T. J. Technology Ltd.
- Wellbore reaming systems and devices13 Oct 2022US 2022/0325585 A1Extreme Technologies, LLC
- Horizontal Directional Reaming21 Jul 2022US 2022/0228441 A1Quanta Associates, L. P.
Most cited
By later US patents
- Asymmetric diamond impregnated drill bit187US 6,474,425 B1Smith International, Inc. · 2002
- Bi-center drill bit with enhanced stabilizing features167US 5,957,223 ABaker Hughes Incorporated · 1999
- Centered-leg roller cone drill bit157US 6,439,326 B1Smith International, Inc. · 2002
- Bi-center and bit method for enhancing stability133US 5,678,644 ADiamond Products International, Inc. · 1997
- Bi-centered drill bit having improved drilling stability mud hydraulics and resistance to cutter damage122US 6,269,893 B1Smith International, Inc. · 2001