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水泥浆堵剂HS 2在特高含水期已广泛用于高渗透带和大孔道的封堵治理 ,以调整或改善注入水的吸水剖面。HS 2的主要成分为普通水泥 ,含有相应的一些添加剂 ,在注入过程中水泥颗粒受重力影响 ,易发生分层沉降 ,使水泥浆泵入性能变坏 ,不能有效地将水泥颗粒带入地层设计深度 ,在预定的位置水化固结。本文报道解决普通水泥浆悬浮性和凝固性的途径及得到的这两项性能良好的水泥浆堵剂 ,室内评价结果表明它的封堵效果良好 ,可用于有高渗透带和大孔道的注水井深部调剖。
HS 2, a cement plugging agent, has been widely used in the plugging of high permeable belts and large pores during the ultra-high water cut period to adjust or improve the water absorption profile of injected water. The main component of HS 2 is ordinary cement, which contains some corresponding additives. During the injection process, the cement particles are affected by gravity and prone to stratification and sedimentation, thus deteriorating the pumping performance of the cement slurry and failing to effectively bring the cement particles into the formation design Depth, hydration consolidation at a predetermined location. This paper reports the ways to solve the suspensibility and solidification of ordinary cement slurry and the two grouting agents with good properties. The indoor evaluation results show that it has a good plugging effect and can be used in water injection wells with high permeable zones and large channels Ministry of profile.