Asphalt inhibitor for water-based drilling fluid and preparation method thereof
The polyamine asphalt inhibitor prepared by catalytic ammonia method solves the deterioration of drilling fluid performance and drilling problems caused by asphalt formation invasion during drilling, effectively inhibits the adhesion and pollution of asphalt, and improves the performance and safety of drilling fluid.
Patent Information
- Application Number
- CN202411963154.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2044-12-30
AI Technical Summary
During the drilling process of oilfields, the invasion of asphalt formations leads to deterioration of drilling fluid performance, which easily leads to complex problems such as paste screens, bubbles, and well leakage. In particular, the problem of drilling is prominent, which is difficult to effectively solve in the existing technology.
Polyamine asphalt inhibitors prepared by catalytic ammonia method generate terminal amino polyethers through the reaction of polyether polyol, liquid ammonia and hydrogen, which has a strong ability to inhibit the adsorption and accumulation of asphalt on the drilling tool.
This inhibitor can significantly reduce the adhesion and pollution of asphalt, improve the rheological performance and lubrication performance of drilling fluid, reduce the impact on the performance of drilling fluid, and facilitate the removal of asphalt, effectively solving problems such as drilling.