四元聚合降失水剂AMPF的合成及性能评价

Synthesis and Performance Evaluation of A Quadripolymer Fluid Loss Additive（AMPF）

摘要:

以对氨基苯磺酸（C6H7NO3S）、对甲基苯磺酸（C7H8O3S）、苯酚（C6H6O）及甲醛（CH2O）为原料四元共聚合成了降滤失剂AMPF。通过单因素实验法得到最佳合成条件为：pH为9、n（C6H7NO3S）：n（C7H8O3S）：n（C6H6O）：n（CH2O）=1:4:6:13.2，反应温度为75℃。红外谱图及核磁谱图确证了该降滤失剂的结构；热重实验表征该四元聚合物具有较好热稳定性。性能评价表明，合成的四元聚合物具有较好的抗温能力（170℃）和抗盐能力，与其他钻井液常用的处理剂配伍性良好。

Abstract:

Quadripolymer AMPF was synthesized with sulfanilic acid（C6H7NO3S）, p-methyl benzenesulfonic acid（C7H8O3S）, phenol（C6H6O） and formaldehyde（CH2O）. By taking the single factor analysis method , the optimal pH synthesis condition of product is 9;molar ratio of monomer n（C6H7NO3S）：n（C7H8O3S）：n（C6H6O）：n（CH2O）is 1:4:6:13.2; the reaction temperature is 75 ℃. Meanwhile, the structure of this reducer is clarified though infra-red spectrum, 1H—NMR spectrum and the results show that the molecular structure of artificial synthesis product is in accord with ideal one. The thermogravimetric experiment indicates good thermal stability of this reducer. Moreover, this polymer has been demonstrated with good temperature resistance, salt tolerance and excellent compatibility.