Di-alkyl chain surfactants as a main surfactant for enhancing oil recovery for tight oil formations
US-12565618-B2 · Mar 3, 2026 · US
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Liu Fuchen patents
Liu Fuchen is listed as an inventor on 52 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Liu Fuchen |
| Total patents | 52 |
| First publication | Apr 20, 2017 |
| Latest publication | Mar 3, 2026 |
Notable patents
Publications ranked by popularity score, then publication date.
Apparatus and method for determining the static proppant-settling-velocity in fracturing fluids
US-2025362215-A1 · Nov 27, 2025 · US
Apparatus and method for determining the static proppant-settling-velocity in fracturing fluids
US-2025354909-A1 · Nov 20, 2025 · US
Composition and method for improving the production of petroleum hydrocarbons
US-2025297154-A1 · Sep 25, 2025 · US
Apparatus and method for determining the static proppant-settling-velocity in fracturing fluids
US-12392704-B2 · Aug 19, 2025 · US
Method for making nano- and micro-particles for use as a proppant and fluid-loss-control additive
US-12391868-B2 · Aug 19, 2025 · US
Method of hydraulic fracturing utilizing a hydraulic fracturing fluid with a single phase liquid proppant
US-12351758-B2 · Jul 8, 2025 · US
Composition and method for improving the production of petroleum hydrocarbons
US-12325824-B2 · Jun 10, 2025 · US
Ultra-high temperature resistant cement slurry system for cementing and preparation method and use thereof
US-12305116-B2 · May 20, 2025 · US
Method for making nano- and micro-particles for use as a proppant and fluid-loss-control additive
US-12241022-B2 · Mar 4, 2025 · US
Recent patents
Latest publications not already listed above.
Degradable friction reducer for hydraulic fracturing treatments
US-2024409805-A1 · Dec 12, 2024 · US
Ultra-high temperature resistant cement slurry system for cementing and preparation method and use thereof
US-2024336828-A1 · Oct 10, 2024 · US
Degradable friction reducer for hydraulic fracturing treatments
US-12098327-B2 · Sep 24, 2024 · US
Degradable friction reducer for hydraulic fracturing treatments
US-12098326-B2 · Sep 24, 2024 · US
Composition and Method for Improving the Production of Petroleum Hydrocarbons
US-2024228862-A1 · Jul 11, 2024 · US
Multifunctional Slickwater Fracturing Fluid
US-2024199946-A1 · Jun 20, 2024 · US
Fracturing Fluid with Superior Proppant Transport Capability
US-2024199944-A1 · Jun 20, 2024 · US
Method of hydraulic fracturing utilizing a hydraulic fracturing fluid with a single phase liquid proppant
US-11999906-B2 · Jun 4, 2024 · US
Degradable friction reducer for hydraulic fracturing treatments
US-11999905-B2 · Jun 4, 2024 · US
Method for making nano- and micro-particles for use as a proppant and fluid-loss-control additive
US-2024150642-A1 · May 9, 2024 · US
Method of hydraulic fracturing utilizing a hydraulic fracturing fluid with a single phase liquid proppant
US-2024150641-A1 · May 9, 2024 · US
Apparatus and method for determining the static proppant-settling-velocity in fracturing fluids
US-2024085300-A1 · Mar 14, 2024 · US
Degradable friction reducer for hydraulic fracturing treatments
US-2024043741-A1 · Feb 8, 2024 · US
Degradable friction reducer for hydraulic fracturing treatments
US-2024043740-A1 · Feb 8, 2024 · US
Reducing loss circulation during well-drilling operations
US-2024003205-A1 · Jan 4, 2024 · US
Composition and method for improving the production of petroleum hydrocarbons
US-11851612-B2 · Dec 26, 2023 · US
Di-Alkyl Chain Surfactants as a Main Surfactant for Enhancing Oil Recovery for Tight Oil Formations
US-2023295515-A1 · Sep 21, 2023 · US
Method of hydraulic fracturing utilizing a hydraulic fracturing fluid with a single phase liquid proppant
US-2023193119-A1 · Jun 22, 2023 · US
Nonionic surfactants employed with extended chain as the oil displacement agent to use in enhanced oil recovery
US-11649395-B2 · May 16, 2023 · US
Composition and Method for Improving the Production of Petroleum Hydrocarbons
US-2023069858-A1 · Mar 9, 2023 · US
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Cnpc Usa Corp | 51 |
| Beijing Huamei Inc | 36 |
| China Nat Petroleum Corp | 32 |
| Beijing Huamei Inc Cnpc | 5 |
| Cnpc Eng Tech Res & Dev Co Ltd | 2 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| C09K8/68 | 34 |
| C09K8/80 | 20 |
| C09K8/602 | 20 |
| C09K8/665 | 17 |
| C09K2208/10 | 17 |