粉煤灰复合低密度水泥浆体系研究

为满足低压易漏失井对低密度水泥浆提出的要求,研制出一套密度范围在1.40 g/cm3-1.55 g/cm3的粉煤灰复合低密度水泥浆体系.当降失水剂加量为11%,缓凝剂加量为0.05%,激发剂加量为1%,该水泥浆体系抗压强度大于18 MPa,滤失量小于50 mL,初始稠度低,稠化时间可调,综合性能良好.

Study of Fly Ash Composite Low-density Cement Slurry System

To meet the requirements of low-density cement slurry for low leakage easily wells, developed a set of fly ash composite low- density cement slurry system which the density range in 1.40 g/cm ?- 1.55 g / ?cm. When fluid loss additive 11%, retarder dosing amount for 0.05% and activator for 1%,the compressive strength of the fly ash composite low- density cement slurry system is over 18MPa ,and the water filter can be controlled with in 50 mL, initial low viscosity, thickening time adjustable, comprehensive performance is good.