井下三维声波激励方法  

Transducer excitation method for 3D acoustic logging sonde

作　　者：门百永[1,2] 鞠晓东[1,2] 乔文孝[1,2] 王德国[3] 卢俊强[1,2] 解辉 

机构地区：[1]中国石油大学油气资源与探测国家重点实验室,北京102249 [2]北京市地球探测与信息技术重点实验室,北京102249 [3]中国石油大学机械与储运工程学院,北京102249 [4]中国石油集团测井有限公司华北事业部,河北任丘062552

出　　处：《声学技术》2013年第5期390-394,共5页Technical Acoustics

基　　金：国家自然科学基金项目(11204380;11374371;11134011和61102102);国家油气重大科技专项(2011ZX05020-009);中国石油科技创新基金(2013D-5006-0304);中国石油天然气集团公司项目(2011A-3903;2011B-4001)资助

摘　　要：介绍了一种解决井下阵列化三维声波辐射器的激励方法。该方法将激励电路分为多个子激励电路,子激励电路置于承压电子仓内,承压电子仓直接安装在声系内。各子激励电路通过自定义高速仪器总线与仪器主控电子短节相连。各子激励电路在仪器总线的控制下,利用基于自举驱动的半桥电路同步产生多路不同组合延时的高压脉冲激励三维辐射器。该电路系统已通过高压、高温测试,激励声场指向性良好。Transducer excitation method for a 3D acoustic logging sonde is presented. Excitation circuit is composed of multiple sub-excitation circuit units, which are embedded into pressure-bearing cartridges. The cartridges are mounted directly into the 3D acoustic logging sonde. Sub-excitation circuit units are connected by a custom serial high-speed tool bus. Under the control of the tool bus, sub-excitation circuit units use the half-bridge circuit driven by bootstrap circuit to generate multiple high voltage square pulses with different delays. Directed acoustic radiation field is obtained by exci-tation of the pulses. The excitation circuit has passed high-pressure, high-temperature test and achieved acoustic field with good directivity.

关 键 词：声波激励 承压电子仓 高速仪器总线 自举驱动 

分 类 号：TB559[理学—物理]