E21B 36/001
Cooling arrangements
Official title: {Cooling arrangements}
E21B36/001 (Cooling arrangements) appears on 419 US grants and 407 published applications in this corpus.
Search patents in E21B- Granted patents
- 419
- Published applications
- 407
- Assignees
- 157
- Inventors
- 703
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 7 | 0 |
| 1978 | 5 | 0 |
| 1979 | 2 | 0 |
| 1980 | 6 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 10 | 0 |
| 1984 | 5 | 0 |
| 1985 | 7 | 0 |
| 1986 | 4 | 0 |
| 1987 | 5 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 3 | 75 |
| 2003 | 6 | 14 |
| 2004 | 46 | 7 |
| 2005 | 16 | 2 |
| 2006 | 12 | 4 |
| 2007 | 2 | 17 |
| 2008 | 3 | 8 |
| 2009 | 9 | 13 |
| 2010 | 10 | 11 |
| 2011 | 8 | 19 |
| 2012 | 15 | 15 |
| 2013 | 11 | 23 |
| 2014 | 15 | 21 |
| 2015 | 18 | 22 |
| 2016 | 19 | 16 |
| 2017 | 15 | 14 |
| 2018 | 17 | 15 |
| 2019 | 12 | 17 |
| 2020 | 19 | 9 |
| 2021 | 10 | 12 |
| 2022 | 12 | 13 |
| 2023 | 18 | 15 |
| 2024 | 13 | 17 |
| 2025 | 16 | 15 |
| 2026 | 15 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Drilling fluid conditioning systems and methods1 Sep 2026US 12,723,478 B2National Oilwell Varco, L. P.
- Extraction and integration of waste heat from enhanced geologic hydrogen production25 Aug 2026US 12,716,339 B2Koloma, Inc.
- Electro-hydrofracturing using electrically conductive proppants and related methods14 Jul 2026US 12,680,014 B2Eden GeoPower, Inc.
- Cooling for geothermal well drilling14 Jul 2026US 12,680,391 B2Eavor Technologies Inc.
- Downhole apparatus and method for operations involving delivery and hardening of settable materials14 Jul 2026US 12,680,417 B2Expro North Sea Limited
- Drilling in hot zones with a multiple tubing drill string8 Oct 2026US 2026/0309003 A1Eavor Technologies Inc.
- Temperature management of downhole tools8 Oct 2026US 2026/0309023 A1Eavor Technologies Inc.
- Systems and methods for recovering ammonia from a subsurface formation13 Aug 2026US 2026/0235015 A1King Fahd University of Petroleum and Minerals
- Extraction and integration of waste heat from enhanced geologic hydrogen production13 Aug 2026US 2026/0235020 A1Koloma, Inc.
- Submersible pumping system with motor protector having enhanced cooling23 Jul 2026US 2026/0210363 A1Schlumberger Technology Corporation
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
- In situ recovery from a kerogen and liquid hydrocarbon containing formation332US 7,011,154 B2Shell Oil Company · 2006
- In situ thermal processing of a hydrocarbon containing formation using a selected production well spacing311US 6,712,136 B2Shell Oil Company · 2004
- In Situ thermal processing of a hydrocarbon containing formation to produce sulfur containing formation fluids298US 6,581,684 B2Shell Oil Company · 2003
- In situ thermal processing of a hydrocarbon containing formation to produce a hydrocarbon condensate285US 6,688,387 B1Shell Oil Company · 2004