基于紧密堆积和颗粒级配理论,研制了一种以工业漂珠为减轻剂、以超细胶凝材料为增强剂的新型低密度、高强度防气窜水泥浆体系。该水泥浆体系已成功应用于蓬莱193油田Ⅰ期工程固井作业,实现了对浅层气的有效封固。文中阐述了所研制水泥浆体系的设计原理,介绍了现场应用情况,并讨论了应用中有待进一步完善的问题。 Based on the theory of tight packing and particle grading, a novel low-density, high-strength gas-tight grouting system with industrial floating beads as mitigating agent and ultra-fine gelling material as reinforcing agent was developed. The cement slurry system has been successfully applied to Penglai 193 oilfield cementing operation of the first phase, to achieve effective sealing of shallow gas. The paper describes the design principle of the developed cement slurry system, introduces the field application, and discusses the issues to be further improved in the application.