CAJ | 학술논문

采用电解质Na3PO4溶液诱导阴离子表面活性剂油酸钠（NaOA）形成蠕虫状胶束体系。利用冷冻断裂蚀刻透射电子显微镜技术（FF-TEM）和流变学方法，研究了Na3PO4在不同质量分数条件下诱导NaOA形成胶束体系的微观结构、流变特性、破胶行为以及重复利用等性能。通过对体系动态模量、剪切黏度、复合黏度等物理量的测量分析，发现该胶束体系在较宽的频率范围内呈现蠕虫状网状结构和优良的黏弹性能。通过内相破胶剂研究了该体系的破胶行为，并结合流变特性测试，证实了该胶束体系具有重复利用的可行性。与目前已成熟应用的羟丙基瓜胶（HPG）压裂液冻胶及其破胶液微观 FF-TEM对比分析显示， NaOA/Na3PO4黏弹性胶束体系具有清晰的网状结构，在温和条件下能够实现和 HPG经强氧化破胶后相当的破胶效果。上述结果表明NaOA/Na3PO4黏弹性胶束体系能够作为可重复利用清洁压裂液体系，应用前景广阔。
채용전해질Na3PO4용액유도음리자표면활성제유산납（NaOA）형성연충상효속체계。이용냉동단렬식각투사전자현미경기술（FF-TEM）화류변학방법，연구료Na3PO4재불동질량분수조건하유도NaOA형성효속체계적미관결구、류변특성、파효행위이급중복이용등성능。통과대체계동태모량、전절점도、복합점도등물리량적측량분석，발현해효속체계재교관적빈솔범위내정현연충상망상결구화우량적점탄성능。통과내상파효제연구료해체계적파효행위，병결합류변특성측시，증실료해효속체계구유중복이용적가행성。여목전이성숙응용적간병기과효（HPG）압렬액동효급기파효액미관 FF-TEM대비분석현시， NaOA/Na3PO4점탄성효속체계구유청석적망상결구，재온화조건하능구실현화 HPG경강양화파효후상당적파효효과。상술결과표명NaOA/Na3PO4점탄성효속체계능구작위가중복이용청길압렬액체계，응용전경엄활。
The electrolyte Na3PO4 solution is used to induce anionic surfactant NaOA to form wormlike micelle system. By using freeze-fracture transmission electron microscopy (FF-TEM) technology and rheology method, the research about Na3PO4 which induces NaOA to form micelle system under different mass fractions, was conducted on the functions like microstructure, rheological proper-ties, gel breaking behavior and recycling. By measuring and analysis of physical quantities about dynamic modulus, shear viscosity, compound viscosity, etc. of the system, it was found that this micelle system shows wormlike net structure and good viscoelastic per-formance in a broad frequency. Using gel breakers, the gel breaking behavior of the system was studied, and combined with the test on rheological properties, it is proved that this micelle system is good for repeated use. Through comparison with the now maturely used hydroxypropyl guanidine gum (HPG) fracturing lfuid and microcosmic FF-TEM of its breaking lfuid, it shows that the NaOA/Na3PO4 viscoelastic micelle system has clear net structure and can achieve the breaking effectiveness equal to HPG after breaking by strong oxidant under moderate conditions. The above results show that the NaOA/Na3PO4 viscoelastic micelle system can be used as recyclable clean fracturing lfuid system and has a broad application prospect.