本文關(guān)鍵詞： 三分量線圈水平分量測量 DSP FPGA 數(shù)據(jù)采集傳輸　出處：《西安石油大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：地層電阻率是識別和評價儲層的重要參數(shù),感應(yīng)測井是最常規(guī)的獲取地層電阻率的方法。三分量感應(yīng)測井是一種新型的油汽儲層探測儀器,其主要應(yīng)用于各向異性油層的勘探中,該儀器不但可以測量垂直方向電阻率還能水平方向電阻率。三分量線圈中水平方向上線圈與傳統(tǒng)垂直方向線圈完全不同,本論文主要設(shè)計出三分量線圈水平分量測量裝置。該裝置主要是對水平方向線圈進(jìn)行測量得出水平分量信息,同時也可對垂直方向線圈進(jìn)行測量。通過測量水平方向線圈系和垂直方向線圈系的接收信號,分析其響應(yīng)特性,為實際儀器設(shè)計提供實驗基礎(chǔ)。主要研究內(nèi)容和成果如下。第一部分主要研究了雙感應(yīng)測井理論和三分量感應(yīng)測井理論,并根據(jù)具體技術(shù)指標(biāo)設(shè)計出三分量線圈水平分量測量裝置的總體結(jié)構(gòu)和線圈系結(jié)構(gòu)。第二部分設(shè)計了三分量線圈水平分量測量實驗裝置的發(fā)射電路。具體包括波形發(fā)生模塊設(shè)計,差分放大電路設(shè)計和功率放大電路設(shè)計。設(shè)計出基于TMS320F2812的最小系統(tǒng)電路、AD9833電路和差分放大電路。采用分立元器件搭建出功率放大電路板實現(xiàn)了信號源的功率放大。發(fā)射電路軟件設(shè)計用TMS320F2812控制AD9833芯片產(chǎn)生了6KHz和18KHz的正弦波,并給出主要程序。第三部分設(shè)計了三分量線圈水平分量測量實驗裝置的接收電路。硬件電路具體包括前置放大濾波電路,AD采集電路和FPGA與DSP數(shù)據(jù)傳輸電路。接收電路軟件設(shè)計包括FPGA控制AD7606芯片進(jìn)行數(shù)據(jù)采集,在FPGA內(nèi)部開辟FIFO實現(xiàn)數(shù)據(jù)緩存,中斷通知DSP讀取數(shù)據(jù),DSP將數(shù)據(jù)上傳上位機,上位機進(jìn)行數(shù)據(jù)處理。完成系統(tǒng)調(diào)試之后測得數(shù)據(jù)滿足技術(shù)指標(biāo)的要求。設(shè)計的三分量感應(yīng)測量裝置可以研究水平方向上和垂直方向上線圈系匝數(shù)的多少、線圈系之間的距離、線圈系布置方式和線圈有限長度對測量信號的影響,還可以分析不同輸入頻率的響應(yīng)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.
【學(xué)位授予單位】：西安石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：P631.81

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