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水泥浆失水是影响吐哈油田固井质量的重要原因。通过分析水泥浆失水过多造成的严重后果及降失水剂RC800降失水的作用机理，在室内降稳失性实验、稠化时间实验、流变性和游离水含量实验以及抗压强度实验的基础上，优选出了水泥浆降失水剂RC800的合理配方。10口井的现场施工表明，降失水剂RC800能与多种水泥浆添加剂相配伍，使用安全方便，应用范围广，可以大幅度提高该地区的固井质量，有效地防止该地区的油层污染。
Water loss of cement slurry is an important factor affecting the cementing quality of Tuha oil field. Through the analysis of the serious consequences caused by too much water loss of cement slurry and the mechanism of the loss of water loss agent RC800, the experiments were conducted in the laboratory, the densification time test, the rheological and free water content tests and the compressive strength test Based on the preferred out of the cement slurry loss agent RC800 reasonable formula. The site construction of 10 wells shows that the fluid loss additive RC800 can be used with a variety of slurry additives, which is safe and convenient to be used in a wide range of applications and can greatly improve the cementing quality in this area and effectively prevent oil pollution in this area .