A cardanol emulsifier for biomass synthetic base drilling fluid and a preparation method thereof
By preparing cashew phenol-based drilling fluid emulsifiers, the problem of insufficient performance of oil-based drilling fluids under high temperature and high pressure has been solved, providing a sustainable emulsifier solution to meet the needs of deepwater and geothermal drilling.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HENAN YIFA PETROLEUM ENG TECH CO LTD
- Filing Date
- 2026-04-24
- Publication Date
- 2026-07-17
AI Technical Summary
Existing oil-based drilling fluid emulsifiers have insufficient performance under high temperature and high pressure conditions, high cost, and unstable supply of traditional raw materials, making it difficult to meet the needs of deep water and geothermal drilling. At the same time, there is a lack of sustainable and environmentally friendly products.
Using cashew phenol as a base material, it reacts with maleic anhydride and polyamine to prepare a biomass-based drilling fluid emulsifier through esterification, addition and condensation steps. The hydrophobic long chain of cashew phenol and the hydrophilic group of polyamine form a stable interfacial film at the oil-water interface, which enhances the resistance to high temperature and high pressure.
The prepared biomass-based drilling fluid emulsifier exhibits excellent emulsification stability and rheological properties under high temperature and high pressure, reduces filtration loss, provides a sustainable source of raw materials, and meets the needs of deepwater and geothermal drilling.
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