纳米二氧化硅在固井水泥浆中的应用研究进展

Research status of nano-silica application in well cementing slurry

摘要:

近年来，纳米二氧化硅由于其本身超高的比表面积及与水泥的火山灰反应，在石油天然气工业中引起了广泛的关注。本文系统梳理了纳米二氧化硅在固井水泥浆中的研究现状，着重介绍了纳米二氧化硅对固井水泥浆的失水量和稠化时间、对水泥石的力学性能和微观结构的影响，总结了纳米二氧化硅在高温条件下的性能表现，探讨了纳米二氧化硅在固井水泥浆的应用中存在的问题、面临的挑战以及未来的发展方向，以期对纳米二氧化硅在固井领域的应用和发展有所帮助。

Abstract:

In recent years， nano-silica has attracted extensive attention in the oil and gas industry due to its ultra-high specific surface area and pozzolanic reaction with cement. In this paper， the research status of nano-silica in cementing slurry is systematically reviewed with focus on the effects of nano-silica on the water loss and thickening time of cementing slurry， and on mechanical properties and microstructure of hardened cementing slurry as well. The effects of nano-silica on the performance of cementing slurry under high temperature is also summarized. The existing problems， challenges and future development direction of nano-silica application in cementing slurry are discussed so as to provide some suggestions and ideas for the development and application of nano-silica in the cementing field.