摘要
研究了硅粉对低密度水泥浆热稳定性的影响,对配制低密度水泥浆用的减轻剂进行了优选。实验结果表明,硅粉能有效地提高低密度水泥浆的热稳定性,在密度为1.5g/cm^3的水泥浆中加入30％的硅粉,水泥石的强度可达18.1MPa;漂珠是耐高温低密度水泥浆的良好减轻剂,用漂珠在较小的水固比下就能配制出密度较低的水泥浆,有利于用硅粉提高水泥石的高温强度,并能代替部分硅粉的作用,有利于提高水泥石的低温强度。
The effect of silica powder on the thermal stability of low density cement was studied. It is indicated that the compressive strength of cement with 30% silica powder reached 18.1 MPa, after curing at 300 ℃ and 18 MPa for three days. Silica powder can improve the thermal stability of low density cement effectively. This cement slurry can be used in heavy crude and deep well.
出处
《钻井液与完井液》
CAS
1996年第5期19-21,共3页
Drilling Fluid & Completion Fluid
