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发明公开
CN108947405A 一种预防气井环空带压水泥浆体系及其制备方法 无效 - 驳回

一种预防气井环空带压水泥浆体系及其制备方法
摘要：
本发明公开了一种预防气井环空带压水泥浆体系及其制备方法。该弹性水泥浆体系，由水泥、淡水、降失水剂、分散剂、增强剂、树脂、树脂固化剂和树脂促进剂组成；各组分重量百分比以水泥质量为基准，各添加剂占水泥重量百分比为：降失水剂：2～4％；分散剂：0.5～1.5％；增强剂：1～3％；树脂：5～20％；树脂固化剂：1～5％；树脂促进剂：0.1～0.5％；淡水：44％。该预防气井环空带压水泥浆体系了提高水泥石抵抗外部载荷破坏的能力；使用树脂及配套添加剂材料制得的水泥浆体系游离液为零，稳定性好，滤失量较小，稠化时间可调，流变性满足施工要求，且力学性能明显改善。
摘要（英）：

The invention discloses a cement slurry system for preventing annular pressure of a gas well and a preparation method thereof. The elastic cement slurry system is prepared from the following components in percentage by weight: 2-4 percent of a fluid loss agent, 0.5-1.5 percent of a dispersant, 1-3 percent of a reinforcing agent, 5-20 percent of resin, 1-5 percent of a resin curing agent, 0.1-0.5 percent of a resin accelerant and 44 percent of fresh water, based on the mass of cement. The cement slurry system can be used for improving the performance of cement for resisting external load destruction, has zero free fluid, good stability, small filter loss and adjustable bodying time by being prepared from resin and mated additive materials, has the rheological property to meet the construction requirement, and can be used for remarkably improving the mechanical performance.

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