三分量线圈水平分量测量装置研究

发布时间：2018-02-04 04:53

本文关键词： 三分量线圈水平分量测量 DSP FPGA 数据采集传输　出处：《西安石油大学》2017年硕士论文　论文类型：学位论文

【摘要】：地层电阻率是识别和评价储层的重要参数,感应测井是最常规的获取地层电阻率的方法。三分量感应测井是一种新型的油汽储层探测仪器,其主要应用于各向异性油层的勘探中,该仪器不但可以测量垂直方向电阻率还能水平方向电阻率。三分量线圈中水平方向上线圈与传统垂直方向线圈完全不同,本论文主要设计出三分量线圈水平分量测量装置。该装置主要是对水平方向线圈进行测量得出水平分量信息,同时也可对垂直方向线圈进行测量。通过测量水平方向线圈系和垂直方向线圈系的接收信号,分析其响应特性,为实际仪器设计提供实验基础。主要研究内容和成果如下。第一部分主要研究了双感应测井理论和三分量感应测井理论,并根据具体技术指标设计出三分量线圈水平分量测量装置的总体结构和线圈系结构。第二部分设计了三分量线圈水平分量测量实验装置的发射电路。具体包括波形发生模块设计,差分放大电路设计和功率放大电路设计。设计出基于TMS320F2812的最小系统电路、AD9833电路和差分放大电路。采用分立元器件搭建出功率放大电路板实现了信号源的功率放大。发射电路软件设计用TMS320F2812控制AD9833芯片产生了6KHz和18KHz的正弦波,并给出主要程序。第三部分设计了三分量线圈水平分量测量实验装置的接收电路。硬件电路具体包括前置放大滤波电路,AD采集电路和FPGA与DSP数据传输电路。接收电路软件设计包括FPGA控制AD7606芯片进行数据采集,在FPGA内部开辟FIFO实现数据缓存,中断通知DSP读取数据,DSP将数据上传上位机,上位机进行数据处理。完成系统调试之后测得数据满足技术指标的要求。设计的三分量感应测量装置可以研究水平方向上和垂直方向上线圈系匝数的多少、线圈系之间的距离、线圈系布置方式和线圈有限长度对测量信号的影响,还可以分析不同输入频率的响应特性。
[Abstract]:Formation resistivity is an important parameter to identify and evaluate reservoir. Induction logging is the most common method to obtain formation resistivity. Three-component induction logging is a new type of oil and vapor reservoir detection instrument. It is mainly used in the exploration of anisotropic reservoirs. The instrument can measure not only the vertical resistivity but also the horizontal resistivity. The horizontal upper coil in the three-component coil is completely different from the traditional vertical coil. In this paper, a three-component coil horizontal component measurement device is designed, which is mainly used to measure the horizontal coil to get the horizontal component information. At the same time, the vertical coil can also be measured. By measuring the received signals of the horizontal coil system and the vertical direction coil system, the response characteristics of the coil system are analyzed. The main contents and results are as follows. The first part mainly studies the dual induction logging theory and the three component induction logging theory. According to the specific technical specifications, the overall structure of the three-component coil horizontal component measuring device and the coil system structure are designed. The second part designs the transmitting circuit of the three-component coil horizontal component measuring experimental device, including the wave. Form generation module design. Differential amplifier circuit design and power amplifier circuit design. The minimum system circuit based on TMS320F2812 is designed. AD9833 circuit and differential amplifier circuit. Power amplifier circuit board with discrete components is used to realize power amplifier of signal source. Design of transmitting circuit software using TMS320F2812 to control AD9. The 833 chip generates sine waves of 6kHz and 18kHz. In the third part, the receiving circuit of the three-component coil horizontal component measuring experiment device is designed. The hardware circuit includes the preamplifier filter circuit. AD acquisition circuit and FPGA and DSP data transmission circuit. The receiving circuit software design includes FPGA control AD7606 chip for data acquisition. Open up FIFO to implement data cache in FPGA, interrupt to inform DSP to read data and upload data to upper computer. After the system debugging, the data can be measured to meet the requirements of technical specifications. The designed three-component induction measurement device can study the number of coils in horizontal and vertical directions. The influence of the distance between the coils, the arrangement of the coils and the finite length of the coils on the measurement signal can also be analyzed. The response characteristics of different input frequencies can also be analyzed.
【学位授予单位】：西安石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P631.81

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