摘要
基于酚醛树脂合成及苯环上取代反应原理,使低分子量的线性酚醛树脂先与二甲胺盐酸盐+甲醛反应,再与碘甲烷反应,制得含碘化亚甲基三甲基铵盐基团的阳离子中间体;使该树脂与羟甲基磺酸钠反应,制得含磺甲基的阴离子中间体;两种中间体在甲醛存在下缩聚,合成了水溶性的两性酚醛树脂。采用正交设计实验方法,根据合成物的阳离子含量、阴离子含量、粘土胶体化率、粘土膨胀率及MMH泥浆和10%盐水浆API滤失量数据,确定了两种中间体和两性树脂的最佳合成条件,得到的两性酚醛树脂(25%~28%水溶液)即为正电胶钻井液降滤失剂DSP 1。在加量为2.0%和2.5%时,DSP 1使0.8%MMH/6.0%膨润土浆的API滤失量由96.2mL分别降至24.6和22.4mL,120℃和150℃滚动16h后的AV和PV变化不大,API滤失量分别为28.8和31.6mL。页岩在2.0%和3.0%DSP 1水溶液中的回收率数据表明,DSP 1具有一定的抑制性。表6。
On the basis of principles of phenolic resin synthesis and of replacing reactions on the benzene ring, a cationic phenolic resin containing group methylenetrimethyl ammonium iodide is obtained by reacting a novalac resin with dimethylamine hydrochloride and formaldehyde at first and with methyl iodide then, an anionic phenolic resin containing sulfomethyl group — with hydroxymethyl sulfonic acid in sodium salt form and a water soluble amphoteric phenolic resin — by polycondensation of the cationic and the anionic phenolic resins at the presence of formaldehyde. Through 3 sets of orthogonalized experiments with 2—3 characteristics from cation or anion content, colloidity of clay, clay swelling, and API fitration loss of MMH mud or 10% salt water mud, the syntheses of cationic, anionic, and amphoteric phenolic resins are optimized and the amphoteric resin in 25—28% aaqueous solution is prepared as fitration loss reducer DSP-1 for positively charged MMH drilling fluid. For 6.0% bentonite/0.8% MMH mud with dosage DSP-1 of 2.0% and 2.5%, the API filtration loss reduces from 96.2 mL to 24.6 and 22.4 mL, respectively, and after rolling at 120℃ or 150℃ in 16 hrs, the AV and PV values change slightly and API filtration loss acounts 28.8 and 31.6 mL, respectively. The data of shale recovery in 2.0% and 3.0% DSP-1 aqueous solutions show that DSP-1 possesses inhibitory property in some extent.
出处
《油田化学》
CAS
CSCD
北大核心
2004年第1期1-4,共4页
Oilfield Chemistry
关键词
酚醛树脂
钻井液
降滤失剂
处理剂
正电胶钻井液
取代反应
合成方法
amphoteric phenolic resin
filtration loss reducer
drilling fluid additive
positively charged (MMH) drilling fluid
synthesis
laboratory evaluation of performance properties