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首页> 外文期刊>Progress in Artificial Intelligence >Design and applications of drilling trajectory measurement instrumentation in an ultra-deep borehole based on a fiber-optic gyro
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Design and applications of drilling trajectory measurement instrumentation in an ultra-deep borehole based on a fiber-optic gyro

机译：基于光纤陀螺超深层钻孔钻探轨迹测量仪的设计与应用

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摘要

The working environment in hot dry rock bore-holes, encountered in deep geothermal investigation drilling and ultra-deep geological drilling (up to 5000 m), is very difficult at the present stage. We have developed a drilling trajectory measuring instrumentation (DTMI), which is based on the interference fiber-optic gyro (FOG). This can work continuously, for 4 h, in an environment where the ambient temperature does not exceed 270 degrees C and the pressure does not exceed 120MPa. The DTMI is mainly divided into three parts: an external confining tube, a metal vacuum flask, and a FOG measurement probe. Here, we focus on the mechanical design, strength, and pressure field simulation analysis for the external tube, the structural design and temperature field simulation analysis for the vacuum flask, and the FOG Shupe error analysis and compensation in the temperature field. Finally, through the engineering applications of the SK-2 east borehole of the China Continental Scientific Drilling (CCSD) project and the geothermal well of Xingreguan-2, the data measurements of the drilling trajectory were used to analyze the stability of the DTMI. The instrument realizes long-duration, high-stability work in the process of making trajectory measurements in an ultra-deep hole. The instrument has the characteristic of anti-electromagnetic interference and enables work to be carried out in the blind zone of existing technologies and instrumentation. Therefore, DTMI has great potential in the promotion and development of geological drilling technology.
机译：在深层地热调查钻井和超深地质钻孔中遇到的热干岩钻孔中的工作环境（高达5000米）在现在阶段非常困难。我们开发了一种钻孔轨迹测量仪器（DTMI），基于干扰光纤陀螺仪（雾）。这可以连续工作，在环境温度不超过270摄氏度的环境中，4小时，压力不超过120MPa。 DTMI主要分为三个部分：外部限制管，金属真空瓶和雾测量探针。在这里，我们专注于外管的机械设计，强度和压力场仿真分析，真空瓶的结构设计和温度场仿真分析，以及温度场的雾Shupe误差分析和补偿。最后，通过中国大陆科学钻井（CCSD）项目的SK-2东钻孔的工程应用和XingReguan-2的地热井，钻孔轨迹的数据测量用于分析DTMI的稳定性。该仪器实现了在超深孔中制造轨迹测量的过程中的长期，高稳定性工作。该仪器具有抗电磁干扰的特点，使工作能够在现有技术和仪器的盲区进行。因此，DTMI在地质钻井技术推广和发展方面具有巨大潜力。

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