超声波地层解堵机理研究初步  

Preliminary Study on the Mechanism of Removal of Bridge Formation by Ultrasonic Waves

作　　者：张永发[1] 祝济之[1] 胡长华[1] 

机构地区：[1]北京理工大学理学院,北京100081

出　　处：《北京理工大学学报》2006年第5期397-400,共4页Transactions of Beijing Institute of Technology

基　　金：国家自然科学基金资助项目(10272021)

摘　　要：用多孔介质模拟地层,以胶体微粒作为堵塞颗粒,在前人研究的基础上建立微粒桥型堵塞的微观模型,研究利用超声波辐射的方法解除多孔介质中堵塞微粒的作用机理,分析超声波作用下管孔中微粒的受力情况和微粒在没有超声波作用下形成稳定桥型堵塞状态下的受力情况,并根据微粒受力情况和形成桥型堵塞过程,分析出微粒脱落时所需外在拉力.综合各种情况,计算出最终达到解堵目的所需的条件.Simulates stratum formation with porous materials and colloid particles, by developing a microscopic model based on previous studies. The mechanism on the removal of tiny particles porous forming bridges of mass by ultrasonic waves is discussed. On the condition of ultrasonic cleaning, analyses forces of particles among the bridges, formed as cylindrical pores within the porous material. Based on the information of this analysis and process of bridge formation, relatively small force conditions are worked out which can remove the particles from bridge formation. Relation of the force and ultrasonic power is made clear and the power needed can be calculated. A generalized sample is given.

关 键 词：超声波 胶体微粒 多孔介质 桥型堵塞 

分 类 号：O39[理学—工程力学]