摘要
在双侧向测井实践教学中,常用电阻率刻度盒代替真实地层,但刻度盒档位有限且需手动换挡,不能模拟地层的连续变化。将数字电位器接入刻度盒的外接档,改变数字电位器阻值,用双侧向测井仪测量其等效电阻率,通过回归分析法得到阻值与电阻率之间的关系式;按此关系式将待测地层模型电阻率换算成相应阻值,以二维数组(井深,阻值)形式存入Arduino系统内,由Arduino系统控制数字电位器按数组规律变化,仿真连续地层。实验结果表明,该数字地层模型基本实现了让地层动起来的效果,双侧向测井仪测量结果与待测地层模型电阻率一致。
In the practical teaching of dual laterolog,Resistivity calibration box is often used to replace real formation,However,the tap position of the calibration box is limited and manual shifting is required,Unable to simulate continuous formation.In this paper,the digital potentiometer is connected to the external tap position of the calibration box,the resistance value of the digital potentiometer is changed,and the equivalent resistivity is measured with the dual laterolog.The relationship between the resistance value and the resistivity is obtained by regression analysis;According to this relational expression,the resistivity of the formation model to be measured is converted into the corresponding resistance value,which is stored in the Arduino system in the form of two-dimensional array(well depth,resistance value),and the digital potentiometer controlled by the Arduino changes according to the array rule to simulate the continuous formation.The experimental results show that the digital formation model basically achieves the effect of making the formation move,and the resistivity measured by the dual laterolog is consistent with that of the formation model to be measured.
作者
胡少兵
黎瑶
虞成
HU Shaobing;LI Yao;YU Cheng(Yangtze University,Institute of geophysics and petroleum resources,Wuhan 430100,china)
出处
《自动化与仪器仪表》
2021年第2期108-111,共4页
Automation & Instrumentation
基金
长江大学创新创业计划(No.2018030)。
