▎ 摘　　要

NOVELTY - Oil well cement retarder comprises reinforcing agent, stabilizing agent, tartaric acid, sodium glucoheptonate, sodium gluconate and deionized water. USE - The oil well cement retarder is useful in the field of oil fields (claimed). ADVANTAGE - The applicable temperature range of the oil well cement retarder is 100-180℃, which can meet the strength requirements of a large temperature difference of 80℃, and can solve the problem of poor temperature resistance of high-temperature retarder, no linear relationship in dosage, and slow development of cement stone strength at the top, and difficult problems of industrialization. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing oil well cement retarder comprising (i) placing the stabilizing agent, tartaric acid, sodium glucoheptonate, and sodium gluconate into deionized water in sequence and reacting to obtain the first solution, and (ii) mixing the first solution with the reinforcing agent, and then dispersing.