新型固井悬浮剂的开发

Research on A New Type of Suspending Agent on Cementing.

针对目前固井所用悬浮剂耐温能力差、综合性能欠佳等问题,根据悬浮剂作用机理,筛选出悬浮能力强的2种材料A1、A2,通过合理复配制得了耐温能力强、综合性能良好的新型固井悬浮剂。通过实验,确定了此悬浮剂A1、A2最佳配比为5︰3,代号定为T-1。实验表明,悬浮剂T-1可抑制水泥浆的高温变稀作用,且其低温不过分增稠、高温不过分稀释,在145℃时仍具有较好的悬浮能力。加入悬浮剂T-1的水泥浆稳定性得到明显改善,在一定范围内可将稳定性差的低密度和常规密度水泥浆的密度差和游离液量控制为0;且悬浮剂T-1副作用小,对水泥浆的稠化、抗压强度、失水量等性能影响较小,综合性能良好。

A new type of suspending agent,T-1,was compounded by A1 and A2,with the optimum mass ratio of A1,A2 was 5:3.Laboratory experiments showed that T-1 had high suspension ability,good temperature stability,and it can kept reasonable viscosity at high or low temperature.T-1 can improve the performance of cement slurry and do little harm to other functions.