C09K 8/60
Compositions for stimulating production by acting on the underground formation
C09K8/60 (Compositions for stimulating production by acting on the underground formation) appears on 6,608 US grants and 6,518 published applications in this corpus.
Search patents in C09K- Granted patents
- 6,608
- Published applications
- 6,518
- Assignees
- 1,229
- Inventors
- 7,835
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 53 | 0 |
| 1977 | 45 | 0 |
| 1978 | 49 | 0 |
| 1979 | 49 | 0 |
| 1980 | 60 | 0 |
| 1981 | 57 | 0 |
| 1982 | 56 | 0 |
| 1983 | 31 | 0 |
| 1984 | 89 | 0 |
| 1985 | 90 | 0 |
| 1986 | 89 | 0 |
| 1987 | 107 | 0 |
| 1988 | 73 | 0 |
| 1989 | 98 | 0 |
| 1990 | 82 | 0 |
| 1991 | 92 | 0 |
| 1992 | 96 | 0 |
| 1993 | 90 | 0 |
| 1994 | 73 | 0 |
| 1995 | 46 | 0 |
| 1996 | 53 | 0 |
| 1997 | 49 | 0 |
| 1998 | 49 | 0 |
| 1999 | 58 | 0 |
| 2000 | 46 | 0 |
| 2001 | 69 | 10 |
| 2002 | 39 | 46 |
| 2003 | 47 | 102 |
| 2004 | 68 | 115 |
| 2005 | 50 | 154 |
| 2006 | 103 | 194 |
| 2007 | 124 | 176 |
| 2008 | 91 | 227 |
| 2009 | 117 | 199 |
| 2010 | 181 | 248 |
| 2011 | 180 | 230 |
| 2012 | 155 | 267 |
| 2013 | 164 | 285 |
| 2014 | 194 | 381 |
| 2015 | 227 | 363 |
| 2016 | 204 | 517 |
| 2017 | 315 | 469 |
| 2018 | 387 | 446 |
| 2019 | 382 | 393 |
| 2020 | 350 | 377 |
| 2021 | 357 | 350 |
| 2022 | 320 | 219 |
| 2023 | 297 | 241 |
| 2024 | 216 | 218 |
| 2025 | 176 | 178 |
| 2026 | 115 | 113 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C09K 8/62Compositions for forming crevices or fractures4,507
- C09K 8/84Compositions based on water or polar solvents2,134
- C09K 8/80Compositions for reinforcing fractures1,766
- C09K 8/602Containing surfactants749
- C09K 8/92Characterised by their form or by the form of their components666
- C09K 8/82Oil-based compositions252
- C09K 8/607Specially adapted for clay formations167
- C09K 8/605Containing biocides163
All 9 subgroupsShow fewer
Recent patents
- Contaminant remediation with functionalized (meth)acrylic polymer or copolymer macroparticulates and systems related thereto6 Oct 2026US 12,753,257 B2Countertrace LLC
- Method of fracturing using a xanthan/guar gum containing fluid6 Oct 2026US 12,753,361 B1Sunita Hydrocolloids Inc.
- Surface treatment compositions used for carbon sequestration, hydraulic fracturing and increasing oil production from a subterranean formation, and method of hydraulic fracturing29 Sep 2026US 12,747,386 B2Aculon, Inc.
- Reverse emulsion for hydraulic fracturing22 Sep 2026US 12,742,112 B2Snf Group
- Method of using tracer compositions having a degradable polymer and a detectable component for tracing gas flow in a hydrocarbon reservoir22 Sep 2026US 12,742,383 B2Saudi Arabian Oil Company
- Formation Maintenance Fluids with Flowback Enhancers to Improve Wellbore Operations8 Oct 2026US 2026/0308442 A1Baker Hughes Oilfield Operations LLC
- Compositions and methods of biocide potentiation8 Oct 2026US 2026/0308443 A1Solugen, Inc.
- Hydraulic fracturing method using lightweight proppant particles to reduce erosion and improve conductivity8 Oct 2026US 2026/0309016 A1ExxonMobil Technology and Engineering Company
- Cementitious reagents, methods of manufacturing and uses thereof1 Oct 2026US 2026/0296966 A1Terra Co2 Technology Holdings, Inc.
- Particulate compositions for iron sulfide remediation1 Oct 2026US 2026/0297419 A1ChampionX LLC
Most cited
By later US patents
- 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
- Control of particulate flowback in subterranean wells358US 5,439,055 ADowell, a division of Schlumberger Technology Corporation · 1995
- Compositions and methods for hydraulic fracturing351US 6,169,058 ABJ Services Company · 2001
- Methods for limiting the inflow of formation water and for stimulating subterranean formations350US 5,979,557 ASchlumberger Technology Corporation · 1999