用地震反演技术实现资料高分辨率处理
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摘要
以三维地震成像最新成果为主导的现代油藏描述方法在近10年来发展很快。就其现有技术而言,还缺少地面地震与测井尺度间的数据。虽然三维地震是探查广阔地下复杂结构的有利工具,但它不具备油藏研究尺度的分辨率,也不能独立地测定油藏参数。研究高分辨率地震处理方法和算法的目的是克服上述地震数据中的不足,补偿储层解释所需的高频成份。在这方面,利用声波测井资料的联合反演技术是有效的。文中介绍的调谐频率加强法适用于缺少测井资料地区,可以同时满足提高分辨率和改善信噪比的要求。本文还系统地说明了利用反演技术作高分辨率处理的地质地球物理依据和技术原理,引用实际资料考核了方法效果。结果表明,用地震反演技术实现资料高分辨率处理的方法能提高分辨率和改善信噪比,且效果稳定、可靠。
The modern reservoir description methods that lead to new results of 3D seismic imaging have advanced greatly.For the techniques we have now, there is a lack of the data between surface seismic and log scale. Although 3D seismicexploration is an advantageous tool, it is not of resolution of reservoir research scale, and reservoir parameters can'tbe determined on its own, too. The purpose of studying the high resolution seismic processing methods and algorithmsis to overcome the shortages in seismic data mentioned above, to compensate the high-frequency component needed inreservoir interpretation. Joint inversion technique using sonic log data is effective on this side. The enhanced tuningfrequency method introduced in this paper is suited to the area where are lack of data, also it can meet the requisitionson improving resolution and signal to noise ratio. The geologic & geophysical basis and technical principles of makinghigh resolution processing using inversion are also introduced systematically, and the results of the method were testedby using the real data. The results show that the high resolution and signal to noise ratio can be improved by the seis-mic inversion realizing the high resolution data processing, stable and reliable effectiveness can be obtained.
The modern reservoir description methods that lead to new results of 3D seismic imaging have advanced greatly.For the techniques we have now, there is a lack of the data between surface seismic and log scale. Although 3D seismicexploration is an advantageous tool, it is not of resolution of reservoir research scale, and reservoir parameters can'tbe determined on its own, too. The purpose of studying the high resolution seismic processing methods and algorithmsis to overcome the shortages in seismic data mentioned above, to compensate the high-frequency component needed inreservoir interpretation. Joint inversion technique using sonic log data is effective on this side. The enhanced tuningfrequency method introduced in this paper is suited to the area where are lack of data, also it can meet the requisitionson improving resolution and signal to noise ratio. The geologic & geophysical basis and technical principles of makinghigh resolution processing using inversion are also introduced systematically, and the results of the method were testedby using the real data. The results show that the high resolution and signal to noise ratio can be improved by the seis-mic inversion realizing the high resolution data processing, stable and reliable effectiveness can be obtained.
引文
[1]杜世通.地震层序模型与地震资料高分辨率处理.勘探家(石油与天然气),1998,3(3):17￣23
[2]Mushin J A.Structure-formation interpretation of seismic data.Nedro,Moscow,(Russian),1990
[3]Du Shitong.Joint Inversion and its application in seismic se quence analysis.SEG65th Annual Intern.Meeting Expanded Abstracts:1991￣1994
[4]R E Sheriff,L P Geldart,Exploration Seismology,1:25
[2]Mushin J A.Structure-formation interpretation of seismic data.Nedro,Moscow,(Russian),1990
[3]Du Shitong.Joint Inversion and its application in seismic se quence analysis.SEG65th Annual Intern.Meeting Expanded Abstracts:1991￣1994
[4]R E Sheriff,L P Geldart,Exploration Seismology,1:25
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