Deterioration of cement/casing adhesion in wellbore scenarios can result in unwanted and potentially harmful leakage with the potential of serious repair costs. In this work, the authors explore the use of self-healing polymers added to conventional wellbore cements as a way to bring about self-healing and readhering (to casing) properties to the composite. Self-healing capability was demonstrated by permeability analysis showing that polymer-cement composites reduce flow by 50-70% at cement bulk and at the cement/steel interface. Use of atomistic simulations imply that these polymers have good wetting properties on the steel surfaces. Interactions between steel/polymer and cement/polymer are complementary, resulting in a wider range of bonding patterns. Cracks seem to expose under-coordinated sites that result in more bonding interactions, which agrees well with the permeability measurements showing high degree of healed cracks and cement-steel interfacial gaps together with an overall increased in structural integrity of these advanced polymer-cement composite materials.

井筒中水泥/套管粘结性的恶化会导致不必要的泄漏和潜在的有害泄漏，并可能带来严重的维修成本。在这项工作中，作者探索了将自修复聚合物添加到常规井眼水泥中的方法，从而为复合材料带来自修复和重新粘结（套管）的特性。通过渗透性分析证明了自修复能力，表明聚合物-水泥复合材料在水泥体积和水泥/钢界面处的流动减少了50-70％。原子模拟的使用暗示这些聚合物在钢表面上具有良好的润湿性能。钢/聚合物与水泥/聚合物之间的相互作用是相辅相成的，从而导致了更广泛的粘结方式。裂纹似乎暴露出不协调的位置，从而导致更多的键相互作用，