马丁代克深度轮误差校正系统设计

为了修正测井过程中因马丁代克深度轮磨损而造成的深度信息误差,设计了一套马丁代克深度轮误差校正系统,通过分析误差产生原因以及误差校正原理,选择线性光栅尺作为长度测量基准,比较光栅尺和深度轮旋转编码器的测量结果,实现误差校正.最后,采用已经在标准井中使用套管节箍信号法校正的2530型马丁代克深度轮对系统进行测试实验,实验结果表明该系统的设计精度符合设计要求,具有速度快、时间短、精度高等优点.

The Calibration System of Martin Decker Depth Wheel

In order to correct the depth information error caused by the abrasion of the Martin Decker deep wheel in well-logging,the paper introducea Martin Decker depth wheel calibration system. It presents the error causes and rectification theory. Grating-rule sensor is used to measure length. Martin Decker depth wheel calibration is realized by comparing the measurement results of the grating-rule sensor and the depth wheel rotary encoder.Finally,experi-ments have been carried out by 2530 Martin Decker depth wheel system,which has been calibrated using the casing collar logging(CCL)method in a standard well.The result shows that the design accuracy of the system is in accord-ance with the design requirements,and it has the advantages of high speed,fast and high precision.