摘要
通过木质素磺酸钙LS与甲醛、伯/仲胺的Mannich反应制备了一系列木质素磺酸钙Mannich碱LM,再与杂聚糖SJ反应制备出系列聚糖-木质素SL。利用红外光谱对其进行结构表征,室内考察了SL作为钻井液处理剂对水基钻井液的黏度、切动力和滤失量等性能的影响。结果表明,常温下多数聚糖-木质素在水基钻井液中具有增黏作用和弱的降滤失作用,在高温热处理(180℃×24小时)后,对钻井液大多有一定的稀释作用,塑性黏度都比较适中,可明显改善塑性黏度和动塑比,且具有一定的降滤失作用。与基浆相比,SL水不溶物处理的钻井液的塑性黏度PV、切动力YP、表观黏度AV、静动力G均有所增加,但明显低于SL水溶物处理的钻井液的相应指标;与LS、SJ钻井液相比,SL水不溶物处理的钻井液,动塑比显著提高,滤失量小于SL水溶物处理的钻井液,降滤失性能优良,其中水不溶物SL1-2(合成原料中的胺为二甲胺)处理钻井液的降滤失性效果最好,高温处理后滤失量仅为12.7 mL。
In this paper,a series of lignin Mannich base（LM） was synthesized from lignin（LS）,amine and formaldehyde in the first step,and then polysaccharide-lignins（SL） were prepared by the reaction between LM and polysaccharide.The products were characterized by IR,and the properties as mud additives were probed.The results showed that most of the SL could improve the viscosity of the drilling fluid（DF）under room temperature,dilute the DF,and improve the plastic viscosity and the ratio of dynamic shear force value to plastic viscosity after the high temperature treatment at 180℃ for 24 hours.Moreover,most of them could reduce the filtration of the DF.The values of PV,YP,AV and G of the dissoluble SL treated fluid were higher than that of the blank sample,and lower than that of the soluble SL treated fluid.The ratio of dynamic shear force value to plastic viscosity of the dissoluble SL treated fluid increased compared with that of the LS and SJ treated fluid.The dissoluble SL1-2（synthesized from dimethylamine and other materials）could improve the filtration property of the DF obviously,the filtration loss being only 12.7 mL after measured at 180℃ for 24 hours.
出处
《油田化学》
CAS
CSCD
北大核心
2011年第1期4-8,共5页
Oilfield Chemistry
基金
国家自然科学基金项目"环保型聚糖-木质素钻井液体系的应用基础研究"(项目编号50874092)
关键词
木质素
聚糖
反应
钻井液处理剂
polysaccharide
lignin
reactions
drilling fluid additive
