油井水泥作为固井最主要的材料，其性能直接决定着固井质量的好坏。选取了四种常用的G级高抗硫油井水泥，分析了水泥的矿物组成、水泥粒径分布、水化热等性能，并研究了其对水泥浆性能的影响。结果表明：水泥细度和矿物组成是影响水泥浆流变性的主要因素；水泥中铝酸盐矿物含量( C3 A+C4 AF)是影响水泥和外加剂相容性的关键因素；水泥中石膏的种类和含量对稠化时间影响明显。
The property of class G cement mainly affect the performance of the cementing quality. The property of four different class G oil well cement was tested and the effect of these property on the performance of the cementing slurry, such as thickening time, rheology and compressive strength was studied. The results show that the following items. The fineness and mineral composition of the class G oil well cement mainly affect the rheology of the cement slurry. The aluminate phase ( C3 A+C4 AF) is the key reason of the compatibility of cement and additive. The type and content of gypsum severely affect the thickening time of the cementing slurry.
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