E21B 36/006
Combined heating and pumping means
Official title: {Combined heating and pumping means}
E21B36/006 (Combined heating and pumping means) appears on 96 US grants and 77 published applications in this corpus.
Search patents in E21B- Granted patents
- 96
- Published applications
- 77
- Assignees
- 67
- Inventors
- 209
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 3 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 3 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 3 |
| 2004 | 1 | 0 |
| 2005 | 1 | 4 |
| 2006 | 2 | 1 |
| 2007 | 1 | 3 |
| 2008 | 1 | 1 |
| 2009 | 1 | 1 |
| 2010 | 1 | 2 |
| 2011 | 0 | 2 |
| 2012 | 3 | 3 |
| 2013 | 2 | 4 |
| 2014 | 1 | 4 |
| 2015 | 2 | 8 |
| 2016 | 4 | 4 |
| 2017 | 4 | 4 |
| 2018 | 6 | 3 |
| 2019 | 4 | 8 |
| 2020 | 6 | 5 |
| 2021 | 6 | 7 |
| 2022 | 5 | 4 |
| 2023 | 2 | 1 |
| 2024 | 3 | 3 |
| 2025 | 2 | 2 |
| 2026 | 4 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Downhole apparatus and method for operations involving delivery and hardening of settable materials14 Jul 2026US 12,680,417 B2Expro North Sea Limited
- Tubular for downhole use2 Jun 2026US 12,644,367 B2Pro-Pipe Service & Sales Ltd.
- Efficient surface and downhole heating of injected carbon dioxide7 Apr 2026US 12,595,719 B2Schlumberger Technology Corporation
- Ground-source thermal system for rejecting data center waste heat to a facility10 Feb 2026US 12,546,189 B2Schlumberger Technology Corporation
- Process heater anti-settling systems and methods11 Nov 2025US 12,467,324 B2Halliburton Energy Services.Inc.
- Ground-source thermal system for rejecting data center waste heat to a facility20 Nov 2025US 2025/0354459 A1Schlumberger Technology Corporation
- System and method for geothermal energy production10 Jul 2025US 2025/0224150 A1GreenFire Energy Inc.
- Efficient surface and downhole heating of injected carbon dioxide12 Dec 2024US 2024/0410256 A1Schlumberger Technology Corporation
- Downhole apparatus and method for operations involving delivery and hardening of settable materials14 Nov 2024US 2024/0376796 A1Deltatek Oil Tools Limited
- Fracturing Apparatus18 Jan 2024US 2024/0018860 A1Yantai Jereh Petroleum Equipment & Technologies Co., Ltd.
Most cited
By later US patents
- Single well stimulation for the recovery of liquid hydrocarbons from subsurface formations388US 4,524,827 AIIT Research Institute · 1985
- Power sources for downhole electrical heating335US 5,099,918 AUentech Corporation · 1992
- Thermal mineral extraction system294US 5,285,846 AFramo Developments (UK) Limited · 1994
- Well hot oil system153US 4,609,041 A1986
- Wellhead heating apparatus and method98US 6,776,227 B22004