【摘要】 油气井中油气聚集和地层压力变化是一个长时间的过程，水泥环的密封性能会随着地层压力，流体成分的变化而改变。在固井水泥环长时间封堵过程中，水泥石内部收到应力破坏，密封失效形成窜流通道，影响固井质量。因此，开发了一套抗高温无固相封堵体系弥补了水泥浆进行长期封堵的不足。室内通过对树脂凝胶基液优选，采用油性树脂E54和水性树脂MT15按一定比例复配使用，高温固化剂GH-5与树脂凝胶基液混配，使得抗高温无固相封堵体系具有良好的固化强度和胶结强度，胶结强度均大于35.0 N/mm~2，弹性形变能力好，为固井永久封堵安全固井作业提供技术支撑。更多还原

【Abstract】 Oil and gas accumulation and formation pressure change in oil and gas wells is a long process. The sealing performance of cement sheath will change with the change of formation pressure and fluid composition. During the long-term plugging process of the cementing cement ring, the stress damage is received inside the cement stone, and the sealing failure forms a channeling channel, which affects the cementing quality. Therefore, a set of solid-free plugging system with high temperature resistance was developed to make up for the deficiency of long-term plugging of cement slurry. In the laboratory, the resin gel base fluid was optimized, and the oily resin E54 and the water-based resin MT15 were used in a certain proportion. The high-temperature curing agent GH-5 was mixed with the resin gel base fluid to make the solid-free plugging system with high temperature resistance have good curing strength and good cementation strength. The cementation strength is greater than35.0 N/mm~2, and the elastic deformation ability is good, which provides technical support for the safe cementing operation of cementing permanent plugging.更多还原