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DOI	10.2172/6809531
报告编号	DOE/ET/27002-3
来源ID	OSTI_ID: 6809531
	Three-dimensional resistivity inversion using alpha centers
	Petrick, W.R. Jr.; Sill, W.R.; Ward, S.H.
英文摘要	The alpha center formulation leads to a forward routine which is fast enough to make three-dimensional (3-D) resistivity inversion practical. The method of alpha centers represents a class of solutions to the dc conduction equation based on certain nonlinear substitutions for electric potential and earth conductivity. The inversion routine results in a conductivity distribution defined by ..cap alpha.. centers which simultaneously fits the data from several parallel or perpendicular dipole-dipole profiles. To illustrate the characteristics of this modeling approach the inversion algorithm is applied to three theoretical and four field data sets. The four field data sets represent samples from massive sulfide and geothermal environments. The technique gives fairly good estimates of the positions of conductive inhomogeneities but poor estimates of their actual conductivities. The entire inversion algorithm requires less than 15000 words of computer memory thus making it tractable for small computers. We envision two major applications. The first is for in-field data interpretation to site drilling locations or guide further exploration. The second is for obtaining a good initial guess for more sophisticated and costly multi-dimensional inversion schemes.
出版年	1979
报告类型	Technical Report
语种	英语
国家	美国
来源学科分类	15 GEOTHERMAL ENERGY ; RESISTIVITY SURVEYS ; COMPUTER CALCULATIONS ; DATA ANALYSIS ; ALGORITHMS ; ELECTRIC POTENTIAL ; THREE-DIMENSIONAL CALCULATIONS ; ELECTRICAL SURVEYS ; GEOPHYSICAL SURVEYS ; MATHEMATICAL LOGIC ; SURVEYS Geothermal Legacy
URL	http://www.osti.gov/scitech/servlets/purl/6809531
资源类型	科技报告
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/262560
推荐引用方式 GB/T 7714	Petrick, W.R. Jr.,Sill, W.R.,Ward, S.H.. Three-dimensional resistivity inversion using alpha centers,1979.