手法を比較

	地球物理インバージョン	坑井测井分析
分野	地球科学	地球科学
系統	Process / pipeline	Process / pipeline
提唱年	1963	1940s
提唱者	Tikhonov and Tarantola	Guyod and Barnhart
種類	data assimilation pipeline	subsurface characterization pipeline
原典	Tarantola, A. (1987). Inverse Problem Theory: Methods for Data Fitting and Model Parameter Estimation. Elsevier.	Asquith, G. B., & Gibson, C. R. (2004). Basic Well Log Analysis (2nd ed.). American Association of Petroleum Geologists.
別名	inverse problem solving, parameter estimation, model-data fitting	wireline logging, borehole logging, petrophysical analysis
関連	3	5
概要	Geophysical inversion is the process of using observed geophysical data to estimate subsurface properties and structures. Formalized by Tikhonov (1963) and expanded by Tarantola (1987), this mathematical framework solves the inverse problem: given measurements (gravity, magnetics, seismic, electrical), what subsurface model produced them? Inversion is central to all quantitative geophysics and enables extraction of detailed subsurface information from surface or borehole measurements.	Well log analysis is the systematic examination of measurements recorded by instruments lowered into a borehole to characterize subsurface lithology, fluid content, and petrophysical properties. Originating in the 1940s, this method has become indispensable for petroleum exploration, groundwater assessment, and engineering geology. Well logs provide direct depth-correlated data that anchor interpretation of seismic surveys and constrain reservoir models.