以亚硫酸盐法造纸废液为主要原料，通过甲醛缩合、接枝共聚、金属络合及磺化处理等一系列改性反应，在室内条件下制备了新型钻井液处理剂ＭＸＸ。室内试验获得了合成ＭＸＸ的最佳配方。试验结果表明，ＭＸＸ具有降粘和降失水效果好、热稳定性好和抗盐、抗钙污染能力强等优点，抑制水化分散性能优于ＦＣＬＳ（铁铬盐）。 A series of modification reactions, such as formalin condensation, graft copolymerization, metal complexation and sulfonation, were carried out with sulfite-based papermaking wastewater as the main raw material. A new drilling fluid treatment agent MXX was prepared under laboratory conditions. The best recipe for synthesizing MXX was obtained in laboratory experiments. The test results show that MXX has the advantages of good effect of viscosity reduction and loss of water loss, good thermal stability and salt resistance, strong ability of resisting calcium pollution and the like, and is superior to FCLS in inhibiting hydration and dispersion.