E21B 43/25
Methods for stimulating production
Official title: Methods for stimulating production {(by vibrating earth formations E21B43/003)}
E21B43/25 (Methods for stimulating production) appears on 8,187 US grants and 9,197 published applications in this corpus.
Search patents in E21B- Granted patents
- 8,187
- Published applications
- 9,197
- Assignees
- 1,738
- Inventors
- 11,107
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 46 | 0 |
| 1977 | 35 | 0 |
| 1978 | 18 | 0 |
| 1979 | 16 | 0 |
| 1980 | 23 | 0 |
| 1981 | 32 | 0 |
| 1982 | 14 | 0 |
| 1983 | 30 | 0 |
| 1984 | 48 | 0 |
| 1985 | 36 | 0 |
| 1986 | 27 | 0 |
| 1987 | 45 | 0 |
| 1988 | 31 | 0 |
| 1989 | 58 | 0 |
| 1990 | 36 | 0 |
| 1991 | 49 | 0 |
| 1992 | 36 | 0 |
| 1993 | 45 | 0 |
| 1994 | 47 | 0 |
| 1995 | 47 | 0 |
| 1996 | 47 | 0 |
| 1997 | 26 | 0 |
| 1998 | 25 | 0 |
| 1999 | 41 | 0 |
| 2000 | 33 | 0 |
| 2001 | 41 | 9 |
| 2002 | 28 | 33 |
| 2003 | 29 | 57 |
| 2004 | 43 | 62 |
| 2005 | 34 | 79 |
| 2006 | 58 | 96 |
| 2007 | 57 | 103 |
| 2008 | 64 | 136 |
| 2009 | 71 | 135 |
| 2010 | 112 | 151 |
| 2011 | 94 | 198 |
| 2012 | 119 | 214 |
| 2013 | 136 | 356 |
| 2014 | 186 | 488 |
| 2015 | 267 | 494 |
| 2016 | 328 | 685 |
| 2017 | 423 | 695 |
| 2018 | 519 | 699 |
| 2019 | 665 | 660 |
| 2020 | 671 | 652 |
| 2021 | 652 | 696 |
| 2022 | 649 | 611 |
| 2023 | 650 | 577 |
| 2024 | 563 | 531 |
| 2025 | 496 | 462 |
| 2026 | 341 | 318 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Direct high pressure slurry injection fracturing system and method6 Oct 2026US 12,752,247 B1
- Method of fracturing using a xanthan/guar gum containing fluid6 Oct 2026US 12,753,361 B1Sunita Hydrocolloids Inc.
- Nuclear reactor integrated oil and gas production systems and methods of operation6 Oct 2026US 12,753,674 B2Natura Resources LLC
- Inline fracturing valve systems and methods6 Oct 2026US 12,753,683 B2Cameron International Corporation
- Turbine engine cleaning and protection system6 Oct 2026US 12,753,718 B2Yantai Jereh Petroleum Equipment & Technologies Co., Ltd.
- Self-correcting flow in subsurface wells8 Oct 2026US 2026/0309010 A1Fervo Energy Company
- Method and system for performing simultaneous hydraulic fracturing operation8 Oct 2026US 2026/0309011 A1ExxonMobil Technology and Engineering Company
- Mechanical energy assisted hydraulic fracturing8 Oct 2026US 2026/0309012 A1
- Methods and systems for performing hydraulic fracturing operations8 Oct 2026US 2026/0309013 A1ExxonMobil Technology and Engineering Company
- Mechanical energy assisted hydraulic fracturing8 Oct 2026US 2026/0309014 A1
Most cited
By later US patents
- Mobile electric power generation for hydraulic fracturing of subsurface geological formations496US 9,534,473 B2Evolution Well Services, LLC · 2017
- Method of pumping an oilfield fluid and split stream oilfield pumping systems475US 7,845,413 B2Schlumberger Technology Corporation · 2010
- Control of particulate flowback in subterranean wells379US 5,330,005 ADowell Schlumberger Incorporated · 1994
- Control of particulate flowback in subterranean wells372US 5,501,275 ADowell, a division of Schlumberger Technology Corporation · 1996
- System for pumping hydraulic fracturing fluid using electric pumps369US 8,789,601 B2U.S. Well Services, LLC · 2014