抗温耐盐泡沫剂QP-2的评价

Performance of Temperature and Salt Resistance Foam Agent QP-2

以十二醇、环氧氯丙烷、甲醛、氢氧化钠和亚硫酸氢钠等为原料,通过磺化反应和磺甲基化反应合成了抗温耐盐泡沫剂QP-1和QP-2。随泡沫剂质量分数增加,产生的泡沫体积先迅速增加后逐渐稳定,其最佳用量为0.5%。将合成泡沫剂QP-1、QP-2与中原油田在用泡沫剂ZY-1进行抗温耐盐性和封堵性比较。结果表明,随着温度的升高和NaCl质量分数的增加,3种泡沫剂产生的泡沫体积和半衰期均降低,泡沫剂的起泡和泡沫稳定性均变差。QP-2的抗温耐盐性和封堵性较好,在NaCl质量分数15%、温度200℃下老化16 h后的泡沫体积为356mL,析液半衰期为238 s。随泡沫注入量的增加,阻力因子先快速增加后趋于平缓;注入量相同时,QP-2的阻力因子高于ZY-1,在矿化度14.3×104mg/L、120℃下的阻力因子为102。

Taking dodecanol, epichlorohydrin, methanal, sodium hydroxide and sodium bisulfite and so on as reactants, temperature and salt resistance foam agents QP-1 and QP-2 were synthesized by means of sulfonation and sulfomethylation reactions. The foam volume increased rapidly first and then became steady gradually with the increase of foam agent mass fraction. The optimum dosage was of 0.5%. The property of synthesized foam agent QP-1, QP-2 was compared with that of Zhongyuan foam agent ZY-I. The results showed that the foam volume and half-life period of three foam agents decreased with increasing temperature and salt mass fraction, and the foaming and foam stabilization ability reduced. QP-2 had a good temperature resistance and salt tolerance ability with 356 mL foam volume and 238 s foam half-life period after degrading for 16 h in the condition of 200~C and 15% salinity. The resistance factor increased rapidly first and then became steady gradually with the increase of foam injection volume. The resistance factor of QP-2 was bigger than that of ZY-1 when the foam injection volume was same. The resistance factor of QP-2 could reach 102 at 120℃ with the mineralization of 14.3× 10^4mg/L.