活性稻壳灰对油井水泥性能的影响

Effect of Active Rice Husk Ash on Performance of Cementing Slurry

以不同煅烧条件得到的稻壳灰样品为考察对象,研究了稻壳灰对油井水泥抗压强度及相关工程性能的影响。研究结果表明:稻壳灰的煅烧条件、掺量、养护温度以及碱激发剂均会对水泥石抗压强度产生影响。在油井水泥中掺入稻壳灰,应优先选择低温稻壳灰,掺量以10%为佳。配合碱激发剂使用,抗压强度提高更为显著。掺入10%稻壳灰RHA-1的水泥浆,工程性能良好,满足施工要求。

Effects of several rice husk ashes prepared under different incineration conditions on the compressive strength and engineering performance of cement slurry is studied. The study shows that incineration, concentration of the rice husk ash, aging temperature and alkaline activator all affect the compressive strength of set cement. In field application, husk rice ash prepared under low temperature is preferred, and the optimum treatment is about 10%. The use of alkaline activator increases the compressive strength of the set cement. RHA-1, a cement slurry treated with 10% rice husk ash has very good engineering performance, satisfying the needs for well cementing.