Efficient surface functionalization for scale-up synthesis of janus carbon nanofluids
The method of preparing Janus carbon nanoparticles from waste carbon materials improves oil recovery by altering wettability and reducing interfacial tension, while also providing a sustainable solution for waste material reuse.
WO2025193931A1PCT designated stage Publication Date: 2025-09-18SAUDI ARABIAN OIL CO +1
Patent Information
- Application Number
- PCT/US2025/019739
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2024-03-14
- Filing Date
- 2025-03-13
- Publication Date
- 2025-09-18
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Figure US2025019739_18092025_PF_FP_ABST
Abstract
A method of preparing an enhanced oil recovery composition is provided. The method includes carbonizing (200) a waste carbon material (202) to provide carbon microparticles (208) having a hydrophobic surface (404), functionalizing (300) the carbon microparticles (208) with an alkaline solution (302) such that the carbon microparticles (208) have a hydrophilic surface (306), and grinding (400) the carbon microparticles (208) to provide carbon nanoparticles (406). The carbon nanoparticles (406) have a hydrophilic surface (306) and a hydrophobic surface (404). The method may further include mixing the carbon nanoparticles with an aqueous based fluid to provide an enhanced oil recovery fluid.
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Citation Information
Patent Citations
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