摘要
针对超低密度水泥浆设计中强度较低、发展缓慢、稳定性较差等问题,结合实际工程情况,利用颗粒级配原理建立两种颗粒级配模型,并结合该两种颗粒级配模型通过实验室研究优选减轻材料和添加剂。实现了以石英砂,粗、细两种粉煤灰,空心微珠和微硅充填的四级颗粒级配减轻材料。进行了密度为1.10 g/cm3和1.30 g/cm3的低密度水泥浆的实验优化,并进行了温度120℃~150℃下的稠化实验。实验室研究结果表明,该浆体的综合性能较好,稠化时间可调,这说明采用该两种颗粒级配模型结合配制低密度水泥浆体系实验设计的可靠性与实用性。
Aiming at the problems of low strength, slow development and poor stability in the design of ultra-low density cement slurry, combining with the actual engineering situation, based on the particle size distribution principle, two kinds of particle size distribution models are established. The two kinds of particle size distribution models are combined with labora- tory studies to optimize the reduction of materials and additives. Four grade grain grading materials with quartz sand, coarse and fine two kinds of fly ash, hollow micro beads and mi- cro silicon filling are realized. The experimental design of low-density cement slurry with density of 1.10 g]cm3 and 1.30 g/cm3 was carried out, and the thickening experiments at120 ~C-150 ~C were carried out. The laboratory results show that the paste has good com- prehensive properties and adjustable thickening time, which shows the reliability and practi- cability of the two particle size distribution models combined with the design of the low den- sity cement slurry system.
出处
《石油化工应用》
CAS
2017年第6期93-96,共4页
Petrochemical Industry Application
关键词
低密度水泥浆
空心微珠
颗粒级配
固井
low density cement slurry
hollow microsphere
particle gradation
well cementing
