一种新型的半线圈阵列感应测井系统  

A Novel Induction Logging System based on Half Coil Array is Presented

作　　者：杨鑫钰 刘娟 雪宇超 马喆 Yang Xinyu;Liu Juan;Xue Yuchao;Ma Zhe(Key Laboratory of Optoelectronic Oil and Gas Logging and Information Testing,School of Electronic Engineering,Xi'an Shiyou University,Xi'an 710065,China;School of Electronic Engineering,Xi'an Shiyou University,Xi'an 710065,China)

机构地区：[1]西安石油大学电子工程学院光电油气测井与信息检测教育部重点实验室,陕西西安710065 [2]西安石油大学电子工程学院,陕西西安710065

出　　处：《山东化工》2021年第5期167-169,共3页Shandong Chemical Industry

摘　　要：主要介绍了一种新型的半线圈感应测井实验装置。相比传统的电法测井系统,半线圈感应测井系统拥有探测范围更远,结构简单,信号更强等特点。半线圈基于混合偶极子天线,将磁偶极子相结合,利用了交叉耦合电子元件的强信号特性。使用DSP控制DDS集成芯片产生不同频率的正弦波,经过差分放大和功率放大之后通入发射线圈,经过前置信号放大和低通滤波后将数据输入到接收模块中。通过固定频率下和不同距离的实验,以此来证明半线圈感应测井系统的稳定性和半线圈测井理论的合理性。实验数据结果与理论仿真一致,故可用于半线圈的感应测井理论研究当中。This paper mainly introduces a new type of half-coil induction logging experimental device.Compared with the traditional electric logging system,the half-coil induction logging system has the characteristics of longer detection range,simple structure and stronger signal.Based on the hybrid dipole antenna,the semi-coil combines magnetic dipoles and makes use of the strong signal characteristics of cross-coupled electronic elements.DDS integrated chip is controlled by DSP to generate sinusoidal waves of different frequencies.After differential amplification and power amplification,the transmitter coil is turned on.After pre-signal amplification and low-pass filtering,the data is input into the receiving module.Experiments at fixed frequency and different distances are carried out to prove the stability of the induction logging system and the reasonability of the logging theory.The experimental data are consistent with the theoretical simulation,so it can be used in the theoretical research of induction logging of half coil.

关 键 词：DSP DDS 半线圈 FPGA 

分 类 号：TE151[石油与天然气工程—油气勘探] P631.8[天文地球—地质矿产勘探]