Multifunctional foaming composition with wettability modifying, corrosion inhibitory and mineral scale inhibitory/dispersants properties for high temperature and ultra high salinity
US-11149185-B2 · Oct 19, 2021 · US
Gaseous or foamed well-drilling compositions
Gaseous or foamed well-drilling compositions · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C09K8/38 |
| Official title | Gaseous or foamed well-drilling compositions |
| Display label | Gaseous or foamed well-drilling compositions |
| Total patents | 97 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 7 |
| 2016 | 6 |
| 2017 | 7 |
| 2018 | 9 |
| 2019 | 8 |
| 2020 | 14 |
| 2021 | 12 |
| 2022 | 6 |
| 2023 | 10 |
| 2024 | 7 |
| 2025 | 8 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Lignocellulose nanofibril material, stable foam system based thereon, preparation method and application thereof
US-2021214509-A1 · Jul 15, 2021 · US
Pickering foam drilling fluids
US-11053425-B2 · Jul 6, 2021 · US
Omniphobic Emulsions for Mitigating Gas Condensate Banking and Methods of Making and Using Same
US-2021189224-A1 · Jun 24, 2021 · US
Foam fracturing fluid with double interface layers of a phlogisticated air-liquid CO2 for shale gas production and preparation method thereof
US-10934467-B2 · Mar 2, 2021 · US
Storable gas generating compositions
US-10934468-B2 · Mar 2, 2021 · US
Gas generating compositions
US-2021047552-A1 · Feb 18, 2021 · US
Use of natural gas as a vaporizing gas in a well intervention operation
US-10907088-B2 · Feb 2, 2021 · US
Use of crosslinked polymer system for mitigation of annular pressure buildup
US-10899956-B2 · Jan 26, 2021 · US
Omniphobic Emulsions for Mitigating Gas Condensate Banking and Methods of Making and Using Same
US-2020392399-A1 · Dec 17, 2020 · US
Gas generating compositions
US-10858565-B2 · Dec 8, 2020 · US
Foaming agent composition and method for removing hydrocarbon liquids from subterranean wells
US-10851282-B2 · Dec 1, 2020 · US
Ultra-dry three-phase flue gas foam for oil-gas fields and preparation method thereof
US-10793763-B2 · Oct 6, 2020 · US
Use of gaseous phase natural gas as a carrier fluid during a well intervention operation
US-10760390-B2 · Sep 1, 2020 · US
Storable gas generating compositions
US-2020270505-A1 · Aug 27, 2020 · US
Pickering Foam Drilling Fluids
US-2020270504-A1 · Aug 27, 2020 · US
Gas generating compositions
US-2020270502-A1 · Aug 27, 2020 · US
Aqueous-based epoxy resin microemulsion
US-10723940-B2 · Jul 28, 2020 · US
Foam fracturing fluid with double interface layers of a phlogisticated air-liquid co2 for shale gas production and preparation method thereof
US-2020224075-A1 · Jul 16, 2020 · US
Multifunctional foaming composition with wettability modifying, corrosion inhibitory and mineral scale inhibitory/dispersants properties for high temperature and ultra high salinity
US-2020172791-A1 · Jun 4, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C09K8/38?
- CPC C09K8/38 is the Cooperative Patent Classification code for “Gaseous or foamed well-drilling compositions.”
- How many patents are filed under CPC C09K8/38 (Gaseous or foamed well-drilling compositions)?
- Our database includes 97 publications tagged with this CPC code.
- Is patent activity under CPC C09K8/38 growing?
- Publication counts under this code: 7 in 2024 vs 8 in 2025 (latest complete years).