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A novel telemetry technique for empowering smart directional borehole drilling systems

机译:新型遥测技术,可增强智能定向井眼钻井系统

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In this paper, a novel low-cost, reliable, and real-time telemetry technique in deep boreholes drilling is developed. This is accomplished by using the drilling pipe surrounded by the drilling mud as a Single Conductor Transmission Line (SCTL). A very compact transducer of dimensions 0.006λ×0.006λ×0.05λ (where λ is the free space wavelength) is designed for properly exciting a TM surface wave on the drilling pipe and drilling mud SCTL. Fitting the standard borehole size, the transducer comprises an open-ended helical conductor concentrically surrounding the drilling pipe and provides a transition from the coaxial line to the SCTL at low HF-band over 2% fractional bandwidth.
机译:在本文中,开发了一种新颖的低成本,可靠和实时的遥测技术,用于深孔钻井。这是通过将被钻探泥浆包围的钻探管用作单导体传输线(SCTL)来实现的。设计了尺寸为0.006λ×0.006λ×0.05λ(其中λ为自由空间波长)的非常紧凑的换能器,以适当地激发钻杆和钻探泥浆SCTL上的TM表面波。符合标准钻孔尺寸,该传感器包括同心围绕钻杆的开放式螺旋导体,并在2%的分数带宽下在低HF波段提供了从同轴线到SCTL的过渡。

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