矿用泥浆脉冲无线随钻测量装置研发及应用

针对现有煤矿井下随钻测量系统信号传输必须依赖通缆专用钻杆而不能采用常规钻杆的技术限制，提出泥浆脉冲无线传输技术，以钻杆柱内环空间为信号传输通道，通过对孔内轨迹参数测量、泥浆脉冲载波信号传输、间歇工作模式设计与控制、孔口信号接收与解调处理等关键技术研究，研制了基于泥浆脉冲的矿用无线随钻测量装置YHD3-1500，并在山西晋城寺河和成庄煤矿进行了试验。试验结果表明:泥浆脉冲无线随钻测量装置信号幅度大、传输距离远、工作时间长、工作稳定性强。装置使用过程中不受钻杆限制，不但可提高钻孔深度，又可实现钻孔轨迹实时控制，进一步拓宽了定向钻进应用领域，具有极大的推广应用价值。 

Development and application of mine mud pulse wireless MWD device

In order to solve the technical limitations that the signal transmission of MWD system must rely on special communication cable pipe instead of the conventional drill pipe in coalmine, mud pulse wireless transmission technology is put forward. Based on the research of engineering parameter measurement techniques, mud pulse carrier signal transmission, intermittent operation mode design and control, aperture signal reception and demodulation processing, YHD3-1500 mine mud pulse wireless MWD device is developed. According to the field test in Sihe and Chengzhuang coalmines, the technology is feasible and the device can improve the strength of drilling pipe and the applicability of directional drilling technology with high signal amplitude, long transmission distance, long working hours, and high stability, which can meet the need of directional drilling in coal mines. The test results show that the mud pulse wireless MWD device has the characteristics of large signal amplitude, high working stability, long transmission distance and working time. The device is not limited by the drill pipe during operation, which can not only improve the depth of drilling hole, but also realize real-time control of borehole trajectory, broadening the application field of directional drilling.