Recent advances in optimized geophysical survey design
Recent advances in optimized geophysical survey design
复制标题
优化地球物理勘测设计的最新进展
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
D. Boerner
中科院分区：
文献类型：
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作者：
H. Maurer;A. Curtis;D. Boerner
Surveydesignultimatelydictatesthequalityofsubsurface信息由geophysicalmethods.Itisthereforecriticaltodesignexperimental程序的实际实施提供，这些程序以经济高效的方式产生最大限度地提高所需信息的数据。本文引用了在地球科学中应用的统计试验设计技术的最新进展。地电、井间和地面地震以及微震监测methodsareincluded.Usingoverdetermined1Dand2Dgeoelectrical的例子，是由地电方法从理论上提供的精选measurementsprovidesalargepercentageoftheinformation内容的一小部分。相比之下，欠确定的二维地震走时层析成像设计研究表明，信息量几乎随着走时数据源-接收器对的数量而线性增加，直到频域地震波形反演实验的underdeterminancyisreducedsubstantially.Anexperimentaldesignstudy表明，一些优化选择的频率为地震幅度-交叉角度调查识别对描述储层最重要的入射角提供了asmuchsubsurfaceinformationasthefullbandwidth.Anonlinear实验设计。非线性设计实例表明，基于阵列孔径的微震监测调查是一种糟糕的策略，几乎肯定会导致次优设计。
Surveydesignultimatelydictatesthequalityofsubsurface information provided by practical implementations of geophysicalmethods.Itisthereforecriticaltodesignexperimental procedures that cost effectively produce those data that maximize the desired information. This review cites recent advances in statistical experimental design techniques applied in the earth sciences. Examples from geoelectrical, crosswell and surface seismic, and microseismic monitoring methodsareincluded.Usingoverdetermined1Dand2Dgeoelectrical examples, a minor subset of judiciously chosen measurementsprovidesalargepercentageoftheinformation content theoretically offered by the geoelectrical method. In contrast, an underdetermined 2D seismic traveltime tomography design study indicates that the information content increases almost linearly with the amount of traveltime data source-receiver pairs considered until the underdeterminancyisreducedsubstantially.Anexperimentaldesignstudy of frequency-domain seismic-waveform inversion experiments reveals that a few optimally chosen frequencies offer asmuchsubsurfaceinformationasthefullbandwidth.Anonlinear experimental design for a seismic amplitude-versusangle survey identifies those incidence angles most important for characterizing a reservoir.Anonlinear design example shows that designing microseismic monitoring surveys based on array aperture is a poor strategy that almost certainlyleadstosuboptimaldesigns.