摘要
研究了兴安落叶松树皮经碱性磺化浸提 (15 0～ 180℃ ,3～ 6h)后 ,所得酚类磺化物再经络合(70～ 90℃ ,30～ 10 0min)、偶合 (70～ 10 0℃ ,1～ 5h)、缩合 (70～ 10 0℃ ,1～ 6h)、交联 (5 0～ 6 0℃ ,30～ 90min)多步化学改性 ,制备聚合物钻井液添加剂的新方法。所得添加剂中相对分子质量在5 0 0 0以上级分的摩尔分数 >80 % ,其分子上含有 3种亲水基团 :w(—SO3H) =13.4% ,w(—COOH)=8.2 6 % ,w(Ph—OH) =0 .96 % ;该添加剂在黏土颗粒表面发生吸附包被的摩尔分数为 93.9% ,在聚合物钻井液中的添加量为 0 .0 1kg/m3 时 ,降黏率和降滤失率分别为 6 5 .8%和 42 .9%。
A new method to prepare a novel bark phenol additive which can be used in the oil-field polymer drilling fluids was developed. The Chinese larch bark phenols were modified step by step through five chemical reactions: sulfate extraction, complexing, coupling, condensation and cross-linking. The chemical structural characteristics of the product, its adsorptive-wrapping ability on the outside surface of particulate clay and influences on the properties of polymer drilling fluids were also investigated after each step of reactions. The experimental results showed that mole fraction with molecular weight higher than 5000 were over 80% in the novel additive. There are three kinds of hydrophilic function groups (-COOH, -SO3H and Ph-OH) in the molecules of the novel additive. The novel additive has great adsorptive-wrapping ability on the outside surface of particulate clay and can markedly reduce viscosity and filtration loss of polymer drilling fluids.
出处
《精细化工》
EI
CAS
CSCD
北大核心
2001年第8期479-481,共3页
Fine Chemicals
基金
"油气藏地质及开发工程"国家重点实验室开放基金项目 (PLN9910 )
