C09K 8/00
Compositions for drilling of boreholes or wells
Official title: Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
C09K8/00 (Compositions for drilling of boreholes or wells) appears on 15,909 US grants and 14,547 published applications in this corpus.
Search patents in C09K- Granted patents
- 15,909
- Published applications
- 14,547
- Assignees
- 2,503
- Inventors
- 17,525
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 147 | 0 |
| 1977 | 133 | 0 |
| 1978 | 164 | 0 |
| 1979 | 99 | 0 |
| 1980 | 169 | 0 |
| 1981 | 157 | 0 |
| 1982 | 130 | 0 |
| 1983 | 141 | 0 |
| 1984 | 293 | 0 |
| 1985 | 279 | 0 |
| 1986 | 218 | 0 |
| 1987 | 252 | 0 |
| 1988 | 194 | 0 |
| 1989 | 225 | 0 |
| 1990 | 213 | 0 |
| 1991 | 217 | 0 |
| 1992 | 236 | 0 |
| 1993 | 207 | 0 |
| 1994 | 223 | 0 |
| 1995 | 166 | 0 |
| 1996 | 148 | 0 |
| 1997 | 151 | 0 |
| 1998 | 152 | 0 |
| 1999 | 155 | 0 |
| 2000 | 160 | 0 |
| 2001 | 196 | 45 |
| 2002 | 139 | 181 |
| 2003 | 168 | 266 |
| 2004 | 225 | 328 |
| 2005 | 161 | 360 |
| 2006 | 250 | 403 |
| 2007 | 262 | 397 |
| 2008 | 241 | 458 |
| 2009 | 241 | 445 |
| 2010 | 380 | 502 |
| 2011 | 357 | 533 |
| 2012 | 322 | 594 |
| 2013 | 373 | 605 |
| 2014 | 421 | 803 |
| 2015 | 437 | 735 |
| 2016 | 445 | 918 |
| 2017 | 620 | 903 |
| 2018 | 735 | 889 |
| 2019 | 816 | 879 |
| 2020 | 800 | 876 |
| 2021 | 823 | 801 |
| 2022 | 734 | 597 |
| 2023 | 707 | 609 |
| 2024 | 625 | 571 |
| 2025 | 495 | 509 |
| 2026 | 307 | 340 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C09K 8/60Compositions for stimulating production by acting on the underground formation6,608
- C09K 8/02Well-drilling compositions4,817
- C09K 8/58Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the3,045
- C09K 8/42Compositions for cementing2,738
- C09K 8/50Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole2,704
- C09K 8/52Compositions for preventing, limiting or eliminating depositions2,416
- C09K 8/54Compositions for in situ inhibition of corrosion in boreholes or wells821
- C09K 8/56Compositions for consolidating loose sand or the like around wells without excessively722
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 improving injection pressure and asphaltene remediation6 Oct 2026US 12,753,337 B2
- Corrosion inhibition compositions and methods of use in sour environments6 Oct 2026US 12,753,338 B2King Fahd University of Petroleum and Minerals
- Methods of treating unconsolidated sand formations using a red mud sealant composition6 Oct 2026US 12,753,339 B2Saudi Arabian Oil Company
- Method of fracturing using a xanthan/guar gum containing fluid6 Oct 2026US 12,753,361 B1Sunita Hydrocolloids Inc.
- Drilling mud and method of making drilling mud having an unrefined petroleum product8 Oct 2026US 2026/0308439 A14 Oaks Solutions LLC
- Apparatus utilizing shape-memory and self-assembly to plug relatively wide remote fractures8 Oct 2026US 2026/0308440 A1The Penn State Research Foundation
- Anti-fouling compositions for use in crude oil production and processing8 Oct 2026US 2026/0308441 A1Ecolab USA Inc.
- 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.
Most cited
By later US patents
- Apparatus for on-site production of nitrate ions409US 7,514,058 B1The Lata Group, Inc. · 2009
- Foaming surfactant compositions383US 4,565,647 AThe Procter & Gamble Company · 1986
- 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