The Middle Of Xing Six Block Polymer Injection Viscosity Loss Control Technology Research And Application

With tertiary oil recovery further development, polymer flooding development scale continues to expand. With the injection of the personalized adjustment and sewage dilution technique, surface injection process in polymer solution viscosity loss problems have become increasingly prominent. According to statistics, apricot area, six central polymer solution injection allocation process of the viscosity loss rate to achieve an average of 40%(injection distribution system viscosity loss rate index is less than 25% of viscosity loss of well qualified rate reached 80%), in the actual development process, relying on improve the injection concentration to ensure injection viscosity, resulting in a waste polymer, effect of the polymer flooding efficiency.Therefore, study a variety of injection process viscosity loss limit and process, optimize the structure of equipment can be for the late new poly flooding capacity block development process selection for reference. And through carrying out injection pipe layer of gelatinous composition and fungus test and find the main factors that affect the viscous loss, the research of adding bactericide bacteriostasis method for viscosity loss.Through the research of this topic, to provide reference for the quality stability of injection system and the development of polymer flooding.