一种固井用高强度防窜自愈合水泥浆体系及其制备方法
Through the synergistic effect of water-dispersible benzoxazine resin, nano-reinforcing materials and oil-sensitive self-healing materials, a multi-scale toughened self-healing cement slurry system is formed, which solves the problem of sealing integrity of cement sheath under ultra-high temperature and ultra-high pressure, realizes self-healing and structural restoration of cement stone under high temperature, and meets the technical requirements of cementing in complex formations.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SOUTHWEST PETROLEUM UNIV
- Filing Date
- 2026-05-06
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies are insufficient to simultaneously achieve high-temperature anti-channeling, long-term strength maintenance, and oil-sensitive self-healing of fractures under ultra-high temperature-ultra-high pressure-strong disturbance coupled conditions, and cannot meet the requirements for the sealing integrity of cement sheaths throughout the entire life cycle in complex formations.
By employing the synergistic effect of water-dispersible benzoxazine resin, nano-reinforcing materials, anti-channeling toughening materials, and oil-sensitive self-healing materials, a cement slurry system with multi-scale toughening, long-term strength retention, and crack self-healing is formed. Through cross-linking networks, organic-inorganic multi-scale synergistic reinforcement, and the repair mechanism of oil-sensitive self-healing materials, the sealing integrity of the cement ring is achieved throughout its entire life cycle.
It significantly improves the high-temperature toughness and long-term structural stability of cement stone, effectively inhibits the propagation of microcracks at high temperatures, and forms a dense viscoelastic repair body in the crack through self-healing materials, restoring the integrity and sealing performance of cement stone, and improving the mechanical strength and sealing performance of cement ring.
Smart Images
Figure CN122127105B_ABST