哈得油田双台阶水平井注水开发中存在层间矛盾突出、亟需调节注水矛盾和改善指进现象的问题。对8种生物聚合物进行不同碳链(C12,C14和C16)的可控疏水化改性,合成并筛选兼具热增稠和盐增稠性能,且可用于高温、高盐条件的深部调驱聚合物...哈得油田双台阶水平井注水开发中存在层间矛盾突出、亟需调节注水矛盾和改善指进现象的问题。对8种生物聚合物进行不同碳链(C12,C14和C16)的可控疏水化改性,合成并筛选兼具热增稠和盐增稠性能,且可用于高温、高盐条件的深部调驱聚合物材料。结果表明,质量分数1.0%的BP-14-036和BP-12-012溶液,在清水条件下的黏度为10 000 m Pa·s左右,矿化度升高至250 g/L时,黏度超过12 000 m Pa·s,具有盐增稠性能;当温度达到130℃时,质量分数1.0%的BP-14-036溶液,黏度可超过14 000 m Pa·s,具有热增稠性能。因此,制备的这2种聚合物材料,可在一定程度上,将油藏极端条件由降低调驱效果的应用阻力,扭转为改善调驱效果的有利因素。这一特点,有望从本质上解决高温高盐油田调剖调驱剂、压裂液及钻井液体系增稠性差、耐受性低的问题。展开更多
The Cu(Ⅱ) separation behaviors with polymer inclusion membranes(PIMs) are explored by modifying 2-aminomethylpyridine derivatives with hydrophobic alkyl chains, including 2-[N-(tert-butyloxycarbonylmethyl)-2-picolyam...The Cu(Ⅱ) separation behaviors with polymer inclusion membranes(PIMs) are explored by modifying 2-aminomethylpyridine derivatives with hydrophobic alkyl chains, including 2-[N-(tert-butyloxycarbonylmethyl)-2-picolyamino]acetate(AMB), N,N-dioctyl-2-aminomethylpyridine(AMD), tert-butyl 2-(N-octyl-2-picolyamino) acetate(AMC), and N,N-didecyl-2-aminomethylpyridine(AME). The transport flux and selectivity of Cu(Ⅱ) are determined by optimizing composition and structure of carriers and plasticizers. The results show that the hydrophobic modification of 2-aminomethylpyridine derivatives can boost the selective transport of copper ions in PIMs and membrane stability. In the optimum composition of 30 wt.% PVC, 30 wt.% AME, and 40 wt.% NPOE, the initial flux of Cu(Ⅱ) is 5.8×10^(−6) mol·m^(−2)·s^(−1). The FT-IR and XPS spectra identify that the alkyl amine functional groups of AME involve in the transport of copper chloride species. The SAXS analysis demonstrates that the generated micro-channels in PIMs induced by the hydrophobic modification of 2-aminomethylpyridine derivatives can contribute to the enhanced Cu(Ⅱ) flux.展开更多
文摘哈得油田双台阶水平井注水开发中存在层间矛盾突出、亟需调节注水矛盾和改善指进现象的问题。对8种生物聚合物进行不同碳链(C12,C14和C16)的可控疏水化改性,合成并筛选兼具热增稠和盐增稠性能,且可用于高温、高盐条件的深部调驱聚合物材料。结果表明,质量分数1.0%的BP-14-036和BP-12-012溶液,在清水条件下的黏度为10 000 m Pa·s左右,矿化度升高至250 g/L时,黏度超过12 000 m Pa·s,具有盐增稠性能;当温度达到130℃时,质量分数1.0%的BP-14-036溶液,黏度可超过14 000 m Pa·s,具有热增稠性能。因此,制备的这2种聚合物材料,可在一定程度上,将油藏极端条件由降低调驱效果的应用阻力,扭转为改善调驱效果的有利因素。这一特点,有望从本质上解决高温高盐油田调剖调驱剂、压裂液及钻井液体系增稠性差、耐受性低的问题。
基金financial supports from the National Key R&D Program of China(No.2019YFC1907801)National Natural Science Foundation of China(No.52174286)+1 种基金Hunan Provincial Science and Technology Plan Project,China(No.2019JJ30031)InnovationDriven of Central South University,China(No.2020CX007)。
文摘The Cu(Ⅱ) separation behaviors with polymer inclusion membranes(PIMs) are explored by modifying 2-aminomethylpyridine derivatives with hydrophobic alkyl chains, including 2-[N-(tert-butyloxycarbonylmethyl)-2-picolyamino]acetate(AMB), N,N-dioctyl-2-aminomethylpyridine(AMD), tert-butyl 2-(N-octyl-2-picolyamino) acetate(AMC), and N,N-didecyl-2-aminomethylpyridine(AME). The transport flux and selectivity of Cu(Ⅱ) are determined by optimizing composition and structure of carriers and plasticizers. The results show that the hydrophobic modification of 2-aminomethylpyridine derivatives can boost the selective transport of copper ions in PIMs and membrane stability. In the optimum composition of 30 wt.% PVC, 30 wt.% AME, and 40 wt.% NPOE, the initial flux of Cu(Ⅱ) is 5.8×10^(−6) mol·m^(−2)·s^(−1). The FT-IR and XPS spectra identify that the alkyl amine functional groups of AME involve in the transport of copper chloride species. The SAXS analysis demonstrates that the generated micro-channels in PIMs induced by the hydrophobic modification of 2-aminomethylpyridine derivatives can contribute to the enhanced Cu(Ⅱ) flux.
