Research On Environmental Friendly Nanometer And Micrometer Sized Polymer For Profile Modification And Polymer Flooding

Based on mechanochemistry activation technique, this dissertation has created a new environment friendly polymer using agricultural wastes which include both the organic gel and the Inorganic gel. Several methods like XRD and SEM are employed to analyze the property of the polymer DKF which are composed of some nanometer and micrometer particles. In order to understand the inorganic character of this new polymer, laboratory tests are conducted to find out its dependence on the concentration of activator and DKF, temperature, reacting time and mineralization.In addition, etherification reaction made the inorganic gel convert into some organic gel. And in the process of exploring this organic property, flowing researches are conducted: molecular structure study on cellulose, derivatization reaction and etherification reaction. Study showed that several factors has influence on gelling rate, gel strength, which include the density of DKF, activator and etherifying agent and temperature. Furthermore, the micro character and crystal structure of gel is also observed employing XRD, SEM and IR.Experiments have selected the best concentration of DKF, activator and etherifying agent and tests result show that this gel behaves a strong strength which could drastically save cost in secondary and tertiary recovery. Besides, because this new polymer is made of agricultural wastes, it also yields advantages like low cost, huge resource and low pollution. If this polymer could be widely employed in the stimulation technique like profile modification and polymer flooding, it is gonna be a great relief for both oil company and environment.