CAJ | 학술논문

指向式旋转导向工具在国内的研究起步晚，许多技术环节还处于攻关阶段。该系统钻头轴（或偏心轴）与钻铤的相对角位置测量是工具在导向过程中保持工具面相对大地稳定的关键和前提，其精确度和实时性至关重要。在研究指向式旋转导向系统工具结构和工具面测量原理的基础上，对利用旋转变压器的2种角位置测量方法——反正切法和鉴相法进行适用性对比分析，对2种算法进行了仿真，并优选鉴相法开展实验室平台验证。仿真及实验结果证明，在电动机模拟井下转动并受干扰的情况下，鉴相法比反正切法处理后的信号具有更强的稳定性，能够较好地实时跟踪并高精度还原工具偏心轴相对于外部钻铤的转动角度，为钻头轴工具面角的测量、导向控制以及整个工具的研制提供了基础。
지향식선전도향공구재국내적연구기보만，허다기술배절환처우공관계단。해계통찬두축（혹편심축）여찬정적상대각위치측량시공구재도향과정중보지공구면상대대지은정적관건화전제，기정학도화실시성지관중요。재연구지향식선전도향계통공구결구화공구면측량원리적기출상，대이용선전변압기적2충각위치측량방법——반정절법화감상법진행괄용성대비분석，대2충산법진행료방진，병우선감상법개전실험실평태험증。방진급실험결과증명，재전동궤모의정하전동병수간우적정황하，감상법비반정절법처리후적신호구유경강적은정성，능구교호지실시근종병고정도환원공구편심축상대우외부찬정적전동각도，위찬두축공구면각적측량、도향공제이급정개공구적연제제공료기출。
The study of directional rotary steerable drilling tool started relatively late in our country and many key parts are still in research stage. The measurement of relative angular position of bit axis (eccentric shaft) and drill collar of the system is the key and prerequisite for drilling tool maintaining a relatively large stable tool face during steering, so its accuracy and instantaneity are very critical. Based on the research on tool structure and tool face measurement principle of directional rotary steerable drilling system, contrastive analysis was conducted to the applicability of arctangent method and phase discrimination method, which are two kinds of angular position measurement methods using resolver. Two corresponding algorithms are simulated and conifrmatory tests are carried out for phase discrimination method in lab. The simulation and test results prove that, in the case of simulated downhole motor rotation and interference, phase discrimination method has higher stability in signals treated by arctangent method, and can track in real-time and reduce in high precision the rotation angle of tool eccentric shaft relative to drill collar, providing basis for tool face angle measurement, steering control and development of the entire tool.