阵列侧向电阻率测井系统的研究与设计

发布时间：2018-05-14 01:30

本文选题：阵列侧向测井 + 多通道信号源　；参考：《电子科技大学》2013年硕士论文

【摘要】：阵列侧向是继双侧向后发展的测井方法，它是一种新型多探测深度的阵列化侧向仪器，该仪器是为识别和评价复杂油气藏而设计研发。阵列侧向电阻率测井仪是国内外石油测井服务公司研究的热点仪器之一，目前国内仅有极少数公司拥有该类型仪器，，因此，研发具有自主知识产权的阵列侧向仪器系统具有重大的研究意义以及经济价值。测井仪器工作在高压、高温的恶劣环境，要求仪器具有极好地稳定性，这极大的增加了仪器开发难度。本文简要的概述了电阻率测井技术的发展，分析了不同电阻率测井技术的优缺点，结合实际需要，针对阵列测井系统仪器进行研究，设计了一套完整的仪器电路系统，实现了具有七个纵向分辨率、大动态范围的阵列侧向电阻率测井系统。通过对仪器系统深入分析与研究，确定了系统各项功能及其性能指标，设计了切实合理的方案，并设计完成了以TMS320F2812DSP控制器、A3P250FPGA为核心的硬件系统，以及相应的软件。该部分电路主要包括：七通道正弦发射信号的产生，发射信号监测，电极驱动，微弱信号采集与处理，系统状态控制以及仪器电路板间通信实现等。完成了系统调试、测试，达到了预期设计指标，为阵列侧向电阻率测井仪的工程应用奠定了坚实的基础。
[Abstract]:Array laterolog is a logging method developed after bilateral development. It is a new type of array lateral instrument with multiple detection depth. This instrument is designed to identify and evaluate complex oil and gas reservoirs. The array lateral resistivity logging instrument is one of the hot point instruments studied by oil logging service companies at home and abroad. At present, there are only a few companies in China. With this type of instrument, the development of an array lateral instrumentation system with independent intellectual property rights has great research significance and economic value.
Well logging instruments are working in high pressure and high temperature environment, requiring the instrument to have excellent stability, which greatly increases the difficulty of the development of the instrument. This paper briefly outlines the development of the resistivity logging technology, analyzes the advantages and disadvantages of different resistivity logging techniques, and studies the array logging system instruments in combination with the actual needs, and designs the design of the array logging system instruments. A complete set of instrument circuit system has been made to realize the array lateral resistivity logging system with seven vertical resolution and large dynamic range. Through in-depth analysis and study of the instrument system, the functions and performance indexes of the system are determined, a practical and reasonable scheme is designed, and the TMS320F2812DSP controller, A3P250FP is designed and completed. GA is the core hardware system, as well as the corresponding software. This part of the circuit mainly includes the generation of the seven channel sinusoidal emission signals, the emission signal monitoring, the electrode drive, the weak signal acquisition and processing, the system state control and the realization of the communication between the instrument circuit board and so on. The system has completed the system debugging and testing, and achieved the expected design index. The engineering application of the lateral resistivity logging tool laid a solid foundation.

【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：P631.81

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