中文摘要：

为了解决石油开采过程中产量低及开采成本高的难题，提出了以超磁致伸缩振动器作用油层提高原油产量的新方法，基于残余原油Bingham体的流动模型，分析了在原油流动过徉中利用振动解堵的工作原理，给出了谐振频率和声强确定的依据及其计算方法，设计了由驱动器和声辐射器等组成的井下振动采油系统，建立了振动器的动力学模型，并进行了驱动电流与驱动器输出力大小之间关系的实验研究，实验表明，以超磁致伸缩材料为核心驱动元件的驱动器，能够为声辐射器提供足够大的动力，其最大输出力受到励磁电流，输出位移和预压应力等影响。

英文摘要：

A new method of effecting oil layer by giant magnetostrictive vibrator was presented to solve the problems of low output and high cost in oil exploitation. According to Bingham flowing model of remnant oil, the principle of unplugging in oil flow by vibration was brought forward and the influences of reso- nance frequency and amplitude on oil turnout were evaluated. A vibrator working in wells for enhancing oil recovery was designed, which composed of actuator, sound radiator and so on. The determination resonance frequency and sound intensity was discussed, and the critical frequency and critical intensity were calculated. A vibrator dynamic model was presented, based on which the relationship between drive current and output force was investigated by experiments. The results indicate that the actuator using giant magnetostrictive material as driving element can provide enough power for sound radiator, and the maximum output force of the actuator influenced by the exciting current, output displacement and prestress.