压裂用瓜尔胶的改性及性能研究

发布时间：2018-10-12 20:49

【摘要】：瓜尔胶作为稠化剂广泛用于油气开采中的静态破岩技术——水力压裂。本研究通过对瓜尔胶颗粒结构及其在有机溶剂中状态的分析，认为在有机溶剂反应液中瓜尔胶的大部分活性羟基由于蜷缩于颗粒内部而未能参与改性反应，因此不能获得性能更好的改性产品。为了克服瓜尔胶大部分活性羟基未能参与改性反应的问题，本研究创新性地提出了有别于传统改性瓜尔胶制备法的“胶团法”和“纤维溶液法”两类改性瓜尔胶制备法对瓜尔胶进行改性研究，其中，“胶团法”成功地运用于瓜尔胶的羟丙基改性及低分子量化改性，而“纤维溶液法”成功运用于瓜尔胶疏水改性。通过大量的实验和仪器分析方法，，认为两类三种瓜尔胶改性方法获得的产品性能优越，其中制备羟丙基瓜尔胶和低分子量瓜尔胶的“胶团法”具有工业推广价值。
[Abstract]:Guar gum is widely used as a thickener in static rock breaking technology-hydraulic fracturing. Based on the analysis of the structure of guar gum particles and their state in organic solvents, it was concluded that most of the active hydroxyl groups of guar gum could not participate in the modification reaction because they were curled up in the particles. Therefore, the better performance of the modified products can not be obtained. In order to overcome the problem that most of the active hydroxyl groups of guar gum could not participate in the modification reaction, In this study, two kinds of modified guar gum preparation methods, "Micellar method" and "Fiber solution method", which are different from the traditional modified guar gum preparation method, are proposed to study the modification of guar gum. "Micellar method" has been successfully applied to hydroxypropyl modification and low molecular weight modification of guar gum, while "fiber solution method" has been successfully applied to hydrophobic modification of guar gum. Through a large number of experimental and instrumental analysis methods, it is considered that two kinds of three kinds of guar gum modified methods have superior properties, among which the "micelle method" for the preparation of hydroxypropyl guar gum and low molecular weight guar gum has the value of industrial popularization.
【学位授予单位】：中国矿业大学（北京）
【学位级别】：博士
【学位授予年份】：2015
【分类号】：TE357.1

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