CAJ | 학술논문

木质素磺酸钙、抗温耐盐型单体 NS-1、丙烯酰胺（AM）和丙烯酸（AA）为原料，硝酸铈铵作为引发剂，用水溶液聚合的方法合成出接枝改性木质素磺酸钙钻井液降粘剂。其最优合成条件为：NS-1： AA ： AM =3：2：2，木质素磺酸钙的用量为单体总量的50%，引发剂的用量占反应单体总质量的0.6%，反应温度为70℃，反应时间为2 h，单体的浓度为15%。当降粘剂的加量为1.5%，降粘率可达81.83%；在120℃的条件下，降粘率为61%；在 NaCl 含量为10%的钻井液中，降粘率为60%；在 CaCl2为1.5%的钻井液中，降粘率为62.86%。
목질소광산개、항온내염형단체 NS-1、병희선알（AM）화병희산（AA）위원료，초산시안작위인발제，용수용액취합적방법합성출접지개성목질소광산개찬정액강점제。기최우합성조건위：NS-1： AA ： AM =3：2：2，목질소광산개적용량위단체총량적50%，인발제적용량점반응단체총질량적0.6%，반응온도위70℃，반응시간위2 h，단체적농도위15%。당강점제적가량위1.5%，강점솔가체81.83%；재120℃적조건하，강점솔위61%；재 NaCl 함량위10%적찬정액중，강점솔위60%；재 CaCl2위1.5%적찬정액중，강점솔위62.86%。
The graft modification calcium lignosulfonate thinners for drilling fluid were synthesized by ac-rylamide(AM),acrylic acid(AA),sodium styrene sulfonate(NS-1)and calcium lignosulfonate,using ammonium persulfate as initiator. Result showed that the optimum synthesis conditions were:monomer ra-tio of n(NS-1): n(AA): n(AM)was 3 : 2 : 2,the concentration of calcium lignosulfonat was 50% ,the reaction temperature was 70 ℃,the quality of monomer initiator(ceric ammonium nitrate)was 0. 6% ,re-action time was 3 h,monomer concentration was 15% . Adding 1. 5% copolymer viscosity reducer into fresh water base mud,the rate of reduction was respectively 81. 83% at 25 ℃ and 61% at 120 ℃;In the presence of concentration of NaCl of 10% and CaCl2 of 1. 5% for the salt water mud,the rate of reduction were 60% and 62. 86% .