摘要
活性碱NPS-2是白色或无色粒状商品，1％溶液pH值为10。考察了由NPS-2和HPAMHTP（分子量2、85×10^7，水解度22、0％）组成的碱聚二元体系63℃、7．34s^-1下的黏度性能。8．0g／LNPS-2＋1．5g／LHTP蒸馏水溶液，在63℃、曝气或无氧条件下老化60天，黏度损失分别为91％和25％。在很宽的加量范围考察外加各种阳离子对该二元溶液曝气3小时的黏度的影响，50mg／L的Ca^2＋、Mg^2＋、Ca^2＋Mg^2＋（1：1）和10mg／L的Fe^2＋使黏度分别下降66．9％、73．4％、76．3％和87．4％；Ca^2＋、Mg^2＋可与NPS-2反应生成沉淀；Fe^2＋在较低浓度时使黏度升高，较高浓度时使黏度下降。该二元溶液剪切后的黏度，随30001／s剪切时间延长（0．5～9．0min）而下降，静置（4h）后黏度恢复幅度则大体相同，剪切5min后黏度随剪切速率增加（1000～50001／s）而下降，≥40001／s时黏度不再能恢复。含1．5g／L HTP的二元溶液的黏度随NPS-2浓度的增加（0～15g／L）而持续下降，不同NPS-2浓度（6、0～12．5g／L）的二元溶液的黏度随温度升高（30-80℃）大体上呈直线下降。图8参5。
＂Active alkaline＂ NPS-2 is a commercial white colored or colorless particulated product, its 1% solution has pH= 10. The apparent viscosity,μa, at 63℃ and 7.34 1/s is investigated for aqueous alkaline/polymer bicomponent system NPS-2 ＋ HTP, the later is an HPAM polymer of M = 2.85×10^7 and HD = 22.0 %. For 8.0 g/L NPS-2 ＋ 1.5 g/L HTP solution in distilled water, aged at 63℃ in air or in an oxygen free medium in 60 days, the μa loss is of 91% and 25%, respectively. In experiments for μa value of this solution with various cations added in wide ranges of dosages and exposured in air for 3 days, it is shown that Ca^2＋ ,Mg^2＋ , and Ca^2＋ ＋ Mg^2＋ （1：1） of concentration 50 mg/L and Fe^2＋ of concentration 10 mg/L result in a decrease in μa of 66.9%, 73.4 %, 76.3%, and 87.4%, respectively; Ca^2＋ and Mg^2＋ react with NPS-2 to create precipitates;Fe^3＋ causes μa enhancement at lower concentrations and reduces μa at higher concentrations. The μa value of the NPS-2/HTP solution continuously decreases with increasing shearing time from 0.5 to 9.0 min at shearing rate 3000 1/s and recoveries in 4 min of standing by a similar amptitude and decreases with increasing shear rate from 1000 to 5000 1/s in 5 min shearing and does not recovery at shear rate ≥4000 1/s. The/q value of NPS-2/HTP solution containing 1.5 g HTP per liter decreases with increasing NPS-2 concentration from 0 to 15 g/L and that of the solution of various NPS-2 concentration, 6.0-12.5 g/L, decreases practically linearly with raising temperature from 30℃ to 80℃.
出处
《油田化学》
CAS
CSCD
北大核心
2007年第4期360-363,共4页
Oilfield Chemistry
关键词
碱剂
碱儇合物二元复合体系
组成
表观黏度
矿化阳离子
抗剪切性
耐温性
提高采收率
compounded alkaline
alkaline/polymer aqueous system
composition
apparent viscosity
inorgainic cations
shear resistance
temperature resistance
enhanced oil recovery （EOR）
