基于数字磁通门的中心通缆随钻测量系统的研制

Development of center type cable MWD system based on digital magnetic flux gate

为了提高随钻测量系统的精度和稳定性,设计了一种基于MEMS加速度和数字磁通门的测量方案用于中心通缆随钻测量系统,分析了测量系统的工作原理,并对系统硬件电路及软件进行了研究。将随钻测量系统分别与采用磁感、磁阻传感器的测量系统进行了常温下和高低温下的温度性能验证实验。实验结果表明:基于数字磁通门的随钻测量系统相比其他磁传感器,能够减小温度的影响且具有较高的精度,能够满足实际随钻测量系统的应用。

In order to improve the accuracy and stability of the MWD system, the author of this paper designed a measurement scheme that based on MEMS acceleration and digital door of magnetic flux used the center line of the MWD system, the working principle of MWD system were analyzed, meanwhile, hardware circuit and software in this system were also studied. In order to verify the MWD sys-tem accuracy and stability developed in this paper,the performance of the measuring system with magnetic induction and magnetic re-sistance sensor was measured by high and low temperature at room temperature. The experimental results show that the MWD system based on digital magnetic flux gate that can reduce the influence of temperature and has high precision, meanwhile can satisfy the practi-cal application of the MWD system compared to other magnetic sensors.