▎ 摘　　要

NOVELTY - Cement comprises 65-81 wt.% high-strength and low-hydration heat cementing material, 10-20 wt.% low-hydration active material, 4-8 wt.% reinforcing agent, 4-6 wt.% anti-shrinking agent and 0.5-1.5 wt.% early strength agent. The high-strength and low-hydration heat cementing material comprises 30-45 wt.% acetylene sulfide, 30-45 wt.% tricalcium silicate, 0.2-1.5 wt.% tricalcium aluminate, 10-16 wt.% calcium aluminoferrite and 1-10 wt.% zirconium silicate. USE - Used as cement. ADVANTAGE - The cement improve the efficiency and mining safety of oil and gas resources, and meets the country's needs for deep and ultra-deep oil and gas resources. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the cement, comprising uniformly mixing the raw materials.