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德莱赛—阿特拉斯公司在八十年代初研制出一种新型地层倾角仪,以便在新探区推广使用。这种新仪器的精度和性能都远远超过以前生产的仪器,为测量小于5°的地层区域倾斜和井眼的倾斜提供了较满意的仪器。该仪器使用三向量轴磁力计和三轮加速度计做成的倾斜器,和原来使用的机械式方位传感器相比,提高了测量方位的精度。井下仪器使用8位微处理机,完成数据采集和对遥测系统的控制。遥测系统把方位和倾角传感器送来的大量数据以数字量形式送到地面仪器,这样就消除了电缆对信号的影响。微处理机还能对电阻率信号的大小进行自动控制,使电阻率信号有较大的动态范围。本文着重阐述了仪器设计的概况,并对井下仪器改动较多的电路—微处理机做较详细的介绍,其它各部分从简。
Dresser - Atlas company in the early eighties developed a new type of stratum inclinometer, in order to promote the use of the new exploration area. The accuracy and performance of this new instrument far surpasses those of previous instruments and provides a more satisfactory instrument for measuring inclination of the formation and inclination of the borehole below 5 °. The instrument uses a three-vector-axis magnetometer and a three-wheel accelerometer made of tilt, and the original mechanical orientation sensor compared to improve the accuracy of measurement azimuth. Downhole instruments use 8-bit microprocessors to complete the data acquisition and control of the telemetry system. The telemetry system sends large volumes of data from the azimuth and tilt sensors to the ground instruments in digital form, eliminating the effects of cables on the signal. Microprocessor can also automatically control the size of the resistivity signal, the resistivity signal has a larger dynamic range. This article focuses on the general situation of instrumentation design, and more detailed changes to the downhole equipment - Microprocessor to do a more detailed introduction, other parts of the simple.