本文選題：核磁共振　切入點(diǎn)：測(cè)井信號(hào)處理軟件　出處：《電子科技大學(xué)》2014年碩士論文

【摘要】：MRIL-P型核磁是世界上最先進(jìn)的核磁共振測(cè)井儀器之一,國(guó)外公司把MRIL-P型核磁測(cè)井資料處理技術(shù)視為核心機(jī)密加以保密。本論文研究成果為獨(dú)立研究,具有完全自主知識(shí)產(chǎn)權(quán)。主要研究?jī)?nèi)容和成果有:1.形成了MRIL-P型核磁回波生成技術(shù),針對(duì)標(biāo)準(zhǔn)測(cè)井模式、差譜測(cè)井模式、移譜測(cè)井模式和綜合測(cè)井模式的數(shù)據(jù)進(jìn)行回波生成技術(shù)研究,形成了亂序校正、旋轉(zhuǎn)疊加、相位校正等計(jì)算方法。最終回波生成計(jì)算結(jié)果與國(guó)外MRIL-P型核磁專用處理軟件(DPP軟件)結(jié)果完全一致。2.在前人研究基礎(chǔ)之上,通過(guò)構(gòu)建核磁共振測(cè)井原始回波串,然后形成加入不同信噪比(SNR)的噪聲進(jìn)行T2解譜。最后對(duì)比分析研究,形成了MRIL-P型核磁T2解譜改進(jìn)奇異值分解算法;當(dāng)SNR25時(shí),無(wú)論是單峰形態(tài)還是雙峰形態(tài)的T2譜,解得的T2譜的與原始構(gòu)造的T2譜幅度、形態(tài)都具有很好的一致性。3.在計(jì)算的偽毛管壓力基礎(chǔ)上,完成了平均孔喉半徑、孔隙喉道均值等參數(shù)的計(jì)算方法研究,為核磁共振測(cè)井解釋評(píng)價(jià)提供了重要的參數(shù)。總之,通過(guò)本論文的研究達(dá)到了以下幾個(gè)方面的目的:其一是掌握了MRIL-P核磁共振測(cè)井信號(hào)處理相關(guān)技術(shù),開(kāi)發(fā)出了磁共振測(cè)井信號(hào)處理分析軟件。其二是,針對(duì)川渝地區(qū)的地質(zhì)特征,進(jìn)行屬地化的應(yīng)用軟件模塊的研發(fā),在孔隙結(jié)構(gòu)參數(shù)反演、孔隙流體孔隙度反演方面形成了特殊技術(shù)。其三是助推核磁共振測(cè)井儀器應(yīng)用推廣,為公司創(chuàng)造了經(jīng)濟(jì)效益。
[Abstract]:MRIL-P type nuclear magnetic field is one of the most advanced nuclear magnetic resonance logging tools in the world. The processing technology of MRIL-P type nuclear magnetic logging data is regarded as a core secret in foreign companies. Having completely independent intellectual property rights. The main research contents and achievements are: 1.The MRIL-P type nuclear magnetic echo generation technology is formed, aiming at standard logging model, differential spectrum logging model, The echo generation technology of the data of the shift spectrum logging model and the integrated logging model is studied, resulting in the correction of disorder sequence, rotation stacking, Phase correction and other calculation methods. The result of the final echo generation is completely consistent with that of MRIL-P nuclear magnetic processing software. 2. On the basis of previous studies, the original echo string of nuclear magnetic resonance logging is constructed. Then the noise with different signal-to-noise ratio (SNR) is formed for T2 spectrum analysis. Finally, the improved singular value decomposition algorithm of MRIL-P type NMR T2 spectrum is formed. When SNR25, both single-peak and bimodal T _ 2 spectra are obtained. The obtained T2 spectrum has a good agreement with the original structure in terms of amplitude and shape. On the basis of the calculated pseudo-capillary pressure, the calculation method of the mean pore throat radius, the mean pore throat and other parameters has been studied. It provides important parameters for nuclear magnetic resonance logging interpretation and evaluation. In a word, through the research of this paper, the following aspects have been achieved: first, we have mastered the MRIL-P nuclear magnetic resonance logging signal processing technology. A magnetic resonance logging signal processing and analysis software has been developed. Secondly, according to the geological characteristics of Sichuan and Chongqing areas, the development of localization application software module has been carried out, and the inversion of pore structure parameters has been carried out. A special technique for pore fluid porosity inversion has been formed. Thirdly, the application of nuclear magnetic resonance logging tools has been promoted, which has created economic benefits for the company.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：P631.8;TP311.52

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本文編號(hào)：1677299