本文關(guān)鍵詞： 超聲測井 井壁聲幅成像 固井質(zhì)量檢測 FPGA 邏輯控制　出處：《長江大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：在石油開發(fā)過程中,利用超聲反射測井方法可以直觀地觀察裸眼井井壁裂縫、孔洞的發(fā)育、井壁巖性,檢查套管中射孔位置、腐蝕程度、套管變形,判斷固井第一界面膠結(jié)質(zhì)量。超聲電視成像測井儀和固井質(zhì)量檢測儀就是基于超聲反射測井技術(shù)發(fā)展而來的測井儀器。然而,隨著油田勘探開發(fā)的不斷深入,對這兩類儀器提出了更高的要求,主要集中在：(1)改善在重泥漿環(huán)境下超聲電視的成像質(zhì)量；(2)降低儀器功耗,提高電路集成度,增強儀器的高溫特性,適應(yīng)小井眼測井和隨鉆測井的需要；(3)將兩類儀器集成到同一系統(tǒng)中,實現(xiàn)同一儀器既可進行井壁超聲成像,又可進行固井質(zhì)量膠結(jié)評價,提高測井效率。因此,研究更高性能的測井儀器具有十分重要的工程意義。本文的主要工作就是針對以上需求設(shè)計實現(xiàn)高性能超聲反射測井儀器的邏輯控制部分。論文根據(jù)新儀器的功能要求和技術(shù)指標,分析了兩種儀器的工作模式和基本時序,歸納出兩類儀器的三種基本工作時序；按照分級順序控制的設(shè)計思路,提出了每周掃描幀觸發(fā)、每物理激發(fā)接收的點觸發(fā)和每個樣本量化的采樣觸發(fā)的基本控制邏輯時序?qū)崿F(xiàn)方案,根據(jù)此基本時序產(chǎn)生儀器各個單元模塊所需要的控制信號,在此基礎(chǔ)上,采用Actel的FPGA作為硬件平臺,設(shè)計實現(xiàn)了基于FPGA的超聲反射測井儀器控制邏輯模塊。綜上所述,文章的主要創(chuàng)新點在于：(1)針對重泥漿環(huán)境下超聲電視成像測井成像效果差這一問題,設(shè)計了時變增益放大控制邏輯,解決了重泥漿條件下的電視成像問題；(2)基于子波激發(fā)的思想,設(shè)計了FPGA邏輯控制的基于CMOS開關(guān)超聲子波發(fā)射電路,達到了低耗高效、性能穩(wěn)定的要求,有利于相關(guān)處理,提取回波聲幅信息；(3)實現(xiàn)將電視成像和固井質(zhì)量檢測兩種儀器合二為一。實測和實驗結(jié)果表明：控制邏輯模塊結(jié)構(gòu)合理、集成度高、可擴展性強、功率消耗低、高溫條件下工作穩(wěn)定,達到了預(yù)定的設(shè)計要求。因此,研究結(jié)果對超聲反射測井儀的研發(fā)有實用參考價值。
[Abstract]:In the course of oil development, ultrasonic reflection logging method can be used to observe the borehole wall fractures, hole development, wall lithology, perforation location, corrosion degree and casing deformation. Ultrasonic television imaging logging tool and cementing quality detector are logging tools developed based on ultrasonic reflection logging technology. However, with the development of oil field exploration and development, the cementing quality of the first cementing interface is determined. Higher requirements are put forward for these two kinds of instruments, which mainly focus on 1) improving the imaging quality of ultrasonic television in heavy mud environment. (2) reducing the power consumption of the tool, improving the integration of the circuit, enhancing the high temperature characteristic of the instrument, and adapting to the needs of the small hole logging and the logging while drilling; 3) integrating two kinds of instruments into the same system, the same instrument can be used not only for ultrasonic imaging of borehole lining, but also for cementing quality evaluation, so as to improve logging efficiency. It is very important to study the high performance logging tool. The main work of this paper is to design and realize the logic control part of the high performance ultrasonic reflection logging tool according to the above requirements. Ability requirements and technical specifications. The working mode and basic time sequence of two kinds of instruments are analyzed, and three kinds of basic working time series of two kinds of instruments are summed up. According to the design idea of hierarchical sequential control, the basic control logic timing scheme of weekly scan frame trigger, point trigger per physical excitation received and sampling trigger per sample quantization is proposed. According to the basic time sequence, the control signals needed by each module of the instrument are generated. On this basis, the FPGA of Actel is used as the hardware platform. The control logic module of ultrasonic reflection logging tool based on FPGA is designed and implemented. The main innovation of this paper is that the control logic of time-varying gain amplification is designed to solve the problem of poor imaging effect of ultrasonic television imaging in heavy mud environment. The problem of television imaging under heavy mud condition is solved. 2) based on the idea of wavelet excitation, the ultrasonic wavelet emission circuit based on CMOS switch controlled by FPGA logic control is designed, which meets the requirements of low consumption, high efficiency, stable performance and good correlation processing. Extracting echo amplitude information; The experimental results show that the control logic module has reasonable structure, high integration, strong expansibility and low power consumption. The research results are of practical reference value for the research and development of ultrasonic reflection logging tool.
【學(xué)位授予單位】：長江大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：P631.83

【參考文獻】

相關(guān)期刊論文 前9條

1 魯放,屈萬里,余厚全,蔡麗斌;小井眼多功能超聲成像測井儀[J];測井技術(shù);1999年06期

2 黃萬偉,邵高平,李建新;測井聲波首波檢測及其相關(guān)性校正[J];測井技術(shù);2005年02期

3 張辛耘;郭彥軍;王敬農(nóng);;隨鉆測井的昨天、今天和明天[J];測井技術(shù);2006年06期

4 于云華 ,倪衛(wèi)寧;超聲波測井的井下數(shù)據(jù)采集與傳輸系統(tǒng)的實現(xiàn)[J];電子技術(shù)應(yīng)用;2002年11期

5 楊永俠;李亞煒;;基于FPGA高速數(shù)據(jù)采集與傳輸?shù)穆暦鶞y井系統(tǒng)[J];電子科技;2011年12期

6 胡凱利;余厚全;魏勇;秦玉坤;段俊東;陳亮;;超聲井徑隨鉆測井回波信號補償方法與電路實現(xiàn)[J];測井技術(shù);2014年01期

7 方奕樂;李孟春;強愛民;王芙蓉;;多功能超聲測井儀井下控制系統(tǒng)設(shè)計[J];石油天然氣學(xué)報(江漢石油學(xué)院學(xué)報);2006年06期

8 田海濤,趙俊輝,鄧時全;超聲波成像測井技術(shù)在套管井中的應(yīng)用[J];江漢石油職工大學(xué)學(xué)報;2005年06期

9 張琴;徐忠清;王聯(lián)國;程建;楊家忠;夏光榮;項定玲;;張力溫度泥漿電阻率組合測井儀的室內(nèi)標定[J];石油儀器;2009年05期

相關(guān)碩士學(xué)位論文 前3條

1 李亞煒;聲幅測井高速AD采集與USB傳輸[D];西安工業(yè)大學(xué);2012年

2 張嘉偉;陣列聲波測井數(shù)據(jù)采集與處理系統(tǒng)設(shè)計[D];電子科技大學(xué);2007年

3 向偉;隨鉆聲波井徑檢測儀的控制系統(tǒng)設(shè)計與研究[D];長江大學(xué);2013年

，

本文編號：1487501