E21B 3/06
Adaptation of rotary draw works to drive rotary tables
E21B3/06 (Adaptation of rotary draw works to drive rotary tables) appears on 9 US grants and 6 published applications in this corpus.
Search patents in E21B- Granted patents
- 9
- Published applications
- 6
- Assignees
- 6
- Inventors
- 12
- Latest grant
- 31 May 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 1 | 0 |
| 2018 | 1 | 1 |
| 2019 | 0 | 1 |
| 2020 | 1 | 1 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Sequencing for pipe handling31 May 2022US 11,346,164 B2Schlumberger Technology Corporation
- Sequencing for pipe handling24 Mar 2020US 10,597,954 B2Schlumberger Technology Corporation
- Universal rotating stripper adapter3 Jul 2018US 10,012,042 B2Premier Coil Solutions, Inc.
- Device for a pipe handling unit and method of inserting and withdrawing a pipe string in/from a borehole21 Nov 2017US 9,822,593 B2West Drilling Products AS
- Drilling machine having a rotary head guide13 Jan 2004US 6,675,915 B2Ingersoll-Rand Company
- System and method for handling a kelly using a top drive18 Mar 2021US 2021/0079761 A1Schlumberger Technology Corporation
- Sequencing for pipe handling10 Sep 2020US 2020/0284106 A1Schlumberger Technology Corporation
- Sequencing for pipe handling11 Apr 2019US 2019/0106950 A1Schlumberger Technology Corporation
- Universal rotating stripper adapter22 Mar 2018US 2018/0080292 A1Premier Coil Solutions, Inc.
- Device for a Pipe Handling Unit and Method of Inserting and Withdrawing a Pipe String in/from a Borehole4 Dec 2014US 2014/0352978 A1West Drilling Products AS
Most cited
By later US patents
- Rotary drive disc brake for drawworks13US 4,226,311 ALoffland Brothers Company · 1980
- Drilling machine having a rotary head guide6US 6,675,915 B2Ingersoll-Rand Company · 2004
- Rotary drive disc brake for drawworks5US 4,144,953 ALoffland Brothers Company · 1979
- Deep drilling machine demountable for helicopter transport4US 3,933,059 AParker Drilling Company · 1976
- Sequencing for pipe handling2US 10,597,954 B2Schlumberger Technology Corporation · 2020