测井技术2026，Vol.50Issue(2)：288-296,9.DOI:10.16489/j.issn.1004-1338.2026.02.009
随钻方位远探测声波测井仪器多模式相控阵发射系统设计
Design of Multimode Phased-Array Transmitter System for Azimuthal Far-Detection Acoustic Logging Tool While Drilling
摘要
Abstract
Acoustic logging-while-drilling technology is the core means to obtain formation parameters in real time in oil and gas exploration.Due to the solidification of hardware architecture,it is difficult to achieve efficient switching of multi-mode(unipolar,dipole,quadrupole,etc.)in traditional transmission systems.In addition,there are problems such as timing conflict,signal distortion and poor environmental adaptability,resulting in insufficient recognition ability of thin interbeds and low resolution of formation interface,which seriously restricts the accuracy of intelligent guidance while drilling and 3D geological modeling.In this paper,a dynamic reconfigurable logic framework is constructed by using field programmable gate array(FPGA)technology,and a multi-mode phased array transmission system is designed by combining the full-bridge and half-bridge hybrid drive topology.The research results show that:①The system realizes the real-time configuration of multi-mode excitation waveform and the precise control of phase control timing through dynamic reconfigurable logic.②The transmission circuit based on full-bridge excitation and half-bridge excitation is adopted,which takes into account the stability of high-voltage transmission and the fast switching ability of signal output.The circuit can maintain stable and reliable operation under different load conditions.③The system can control the phased array acoustic emission transducer array at the same time,support the directional radiation in the phased array working mode,and can also independently control a single phased array acoustic emission transducer to realize multi-mode excitation such as unipolar,dipole or quadrupole.It is concluded that the multi-mode phased array transmitting system based on FPGA effectively solves the problem of multi-mode excitation and timing control in the acoustic logging tool for azimuth remote detection while drilling,and provides reliable hardware technical support for the development of acoustic logging tool for azimuth remote detection while drilling.关键词
随钻声波测井/发射系统/FPGA/声波相控阵技术/驱动电路设计/发射换能器/多模态激励/时序控制Key words
acoustic logging while drilling/transmitter system/FPGA/acoustic phased array technology/drive circuit design/transmitting transducer/multi-mode excitation/timing control分类
天文与地球科学引用本文复制引用
秦贞宇,卢俊强,罗博,门百永,潘佳康,魏士杰,刘朝灯,余海洋..随钻方位远探测声波测井仪器多模式相控阵发射系统设计[J].测井技术,2026,50(2):288-296,9.基金项目
国家自然科学基金项目"井下声电效应测井探测器电磁兼容特性研究"(42174218) （42174218）
