水泥抗压强度与养护条件及声阻抗间关系的实验研究

Experimental Research on the Relationship between Compressive Strength and Acoustic Impedance of Oil Well Cement under Different Curing Conditions

按国家标准浇铸油井水泥试块,在不同养护条件下测定其声阻抗及抗压强度。实验表明水泥试块的抗压强度主要取决于水/灰比及养护时间,而与养护温度及压力关系不大。给出了适用于我国固井条件的水泥抗压强度与声阻抗关系的经验公式。

The Compressive strength and the acoustic impedance for oil cement specimens casted according to Na-tional Standard are determined under aifferent curing conditions. The results show tha the compressivestrength mainly depends on water-cement ratio and curing period, being less related to both curing tempera-ture and curing pressure. The empirical relationship between compressive strength and acoustic impedance forthe cement applicable for the cementing conditions in our country are presented.