核磁共振测井信号处理分析与软件研发

发布时间：2018-03-28 17:22

本文选题：核磁共振　切入点：测井信号处理软件　出处：《电子科技大学》2014年硕士论文

【摘要】：MRIL-P型核磁是世界上最先进的核磁共振测井仪器之一,国外公司把MRIL-P型核磁测井资料处理技术视为核心机密加以保密。本论文研究成果为独立研究,具有完全自主知识产权。主要研究内容和成果有:1.形成了MRIL-P型核磁回波生成技术,针对标准测井模式、差谱测井模式、移谱测井模式和综合测井模式的数据进行回波生成技术研究,形成了乱序校正、旋转叠加、相位校正等计算方法。最终回波生成计算结果与国外MRIL-P型核磁专用处理软件(DPP软件)结果完全一致。2.在前人研究基础之上,通过构建核磁共振测井原始回波串,然后形成加入不同信噪比(SNR)的噪声进行T2解谱。最后对比分析研究,形成了MRIL-P型核磁T2解谱改进奇异值分解算法;当SNR25时,无论是单峰形态还是双峰形态的T2谱,解得的T2谱的与原始构造的T2谱幅度、形态都具有很好的一致性。3.在计算的伪毛管压力基础上,完成了平均孔喉半径、孔隙喉道均值等参数的计算方法研究,为核磁共振测井解释评价提供了重要的参数。总之,通过本论文的研究达到了以下几个方面的目的:其一是掌握了MRIL-P核磁共振测井信号处理相关技术,开发出了磁共振测井信号处理分析软件。其二是,针对川渝地区的地质特征,进行属地化的应用软件模块的研发,在孔隙结构参数反演、孔隙流体孔隙度反演方面形成了特殊技术。其三是助推核磁共振测井仪器应用推广,为公司创造了经济效益。
[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.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：P631.8;TP311.52

【参考文献】