【作者】 林庆；

【导师】 张明华；

【作者基本信息】 中国地质大学（北京） ， 地球探测与信息技术， 2009， 硕士

【摘要】 测井约束反演,是目前用于隐蔽岩性油藏描述的有效物探技术,其应用已日趋成熟。论文通过大量文献调研,对该技术的基本原理、方法分类、操作流程等做了深入分析,针对东营凹陷西部博兴-纯化地区沙四段岩性油气藏的相关地质特征,结合资料情况,开展研究区测井约束反演,并进行该技术的应用效果分析。论文所要阐述的关键问题包括两个方面:一是测井约束反演技术的相关理论与方法;二是该技术在岩性油气藏发育区的实例反演效果分析。首先,对地震反演技术进行了大量文献及报告调研,总结该领域的相关进展,简单介绍了目前广泛使用的几种主要反演方法。针对测井约束反演,从测井数据预处理、地震资料的地质解释、子波提取、合成地震记录、井震标定、初始波阻抗模型的建立、反演参数的优选以及色标调整等方面详细论述了该方法的关键技术。博兴-纯化地区位于东营凹陷西部,岩性油气藏为该区最为重要的油藏类型,论文反演的目的层段为沙四纯下段,该层段广泛发育滩坝砂体,目前缺乏与之配套的地震反演技术。对前人研究成果进行地震反演相关的区域概况调研,充分利用研究区内地质、地震、钻井、测井、试油等多方面资料,并进行相关预处理,在此基础上,开展博兴-纯化地区沙四纯下段的测井约束反演。测井数据分析及处理结果表明,在博兴-纯化地区,声波时差等常用速度类测井资料与实际地层岩性对应不甚理想,不能很好区分储集层。测井约束反演,继承传统波阻抗反演技术的精髓,在声波曲线上加入能够反映地层岩性的其他测井数据信息,如自然伽马,运用重构后的拟声波曲线进行反演,明显改善了地震反演对博兴-纯化地区沙四纯下段滩坝砂体储集层的刻画能力。论文综合阐述了测井约束反演方法的相关理论和关键技术,在此基础上,应用于博兴-纯化地区沙四纯下段滩坝砂体及储集层的预测,取得显著效果。更多还原

【Abstract】 Logging constrained inversion is used to describe the hidden reservoir lithology effective geophysical technology, its applications have become more and more mature. Through extensive literature research, the paper did in-depth analysis of the basic principles of the technology, methods classification and operational processes. For the western Boxing region of Dongying depression - purification of Sha4 Member reservoir lithology related geological features, and combined with information on the situation, bound to carry out the study area reflect the logging, and application of the technology analysis. Paper to set out the key issues, including two aspects: First, logging constrained inversion of the relevant theories and methods; Second, the technology development in the reservoir area lithology examples of inversion analysis.First of all, carried out the technology of seismic inversion and a great deal of literature research, summarized the relevant progress in the field and then briefly introduced several major inversion methods that been used widely at present. Constrained inversion for logging, discussed the key techniques of the method in detail form the pre-processing of logging data, geological interpretation of seismic data, wavelet extraction, synthetic seismogram, David Wells calibration, the initial model of acoustic impedance inversion, and optimization parameters.Boxing - Purification is located in the western region of Dongying Depression, Lithologic reservoirs is the most important reservoir type of the area. The purpose layer of inversion is Sha4 Chu under, this layer has the extensive development of sandbody Beach dam, and it is compatible with the lack of seismic inversion technology. Through the results of previous studies related to seismic inversion study of the regional profile, making full use of regional geological studies, seismic, drilling, logging, oil and various test data, and associated pre-processing. On this basis, to carry out Boxing-Chunhua of Sha4 chun Si Member in the under logging constrained inversion.Logging data analysis and processing results showed that acoustic velocity and other types of commonly used logging data correspond with the actual lithology is not satisfactory in the area of Boxing - Purification, it can not distinguish reservoir well. Logging constrained inversion carried forward the essence of the traditional wave impedance inversion technique. Add the other logging data in the sound waves curve., which can reflect the lithology ,such as GR, use the reconstructed sound wave curve to do the inversion, it improved the ability to portray in the seismic inversion of Boxing - Purification of Sha4 Chun Member sand beach under dam reservoir sand body significantly.The paper integrated presentation of methods of logging constrained inversion theory and key technology, on this basis, put in into use in the Boxing - Purification of Sha4 Chun Member sand beach under dam and reservoir sandstone layer achieved significant results.更多还原