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DSH低摩阻水泥外加剂由减阻剂、降滤失剂、稳定剂及促凝剂复配而成。对加入DSH的水泥浆的流变性能、沉降稳定性、抗压强度、减阻性能、抗窜性能及水泥石的动态性能进行了试验。结果表明,DSH低摩阻水泥外加剂有较强的控制水泥浆滤失能力和减阻作用;DSH水泥浆具有良好的流变性和较低的临界排量,用于小眼井施工可以实现紊流顶替;DSH使水泥石具有良好的动态性能,提高小眼井采油寿命。
DSH low friction cement admixture is made of drag reducer, fluid loss reducer, stabilizer and coagulant. The rheological properties, settling stability, compressive strength, drag reduction, anti-channeling properties and dynamic properties of cement paste were studied. The results show that DSH low friction cement admixture has strong control ability of cement slurry filtration loss and drag reduction; DSH cement slurry has good rheological properties and lower critical displacement for the construction of small-eye wells can achieve the effect of turbulence Stream replacement; DSH make cement stone has good dynamic performance, improve the life of small-well oil production.