Controlled-source interferometric redatuming by crosscorrelation and multidimensional deconvolution in elastic media
نویسندگان
چکیده
منابع مشابه
Controlled-source interferometric redatuming by crosscorrelation and multidimensional deconvolution in elastic media
Various researchers have shown that accurate redatuming of controlled seismic sources to downhole receiver locations can be achieved without requiring a velocity model. By placing receivers in a horizontal or deviated well and turning them into virtual sources, accurate images can be obtained even below a complex near-subsurface. Examples include controlled-source interferometry and the virtual...
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Recently, various cross-correlation based methods have emerged to redatum source locations from the earth’s surface to downhole receiver locations. By placing receivers in a horizontal or deviated well below a complex overburden and turning them into virtual sources, accurate imaging can be obtained without requiring a velocity model of the near subsurface. The underlying theory is based on the...
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We review electromagnetic interferometry by multidimensional deconvolution (MDD) and investigate its sensitivity to spatial sampling. Two Sea Bed Logging datasets were modeled numerically. One represents a shallow sea situation with a small vertical source-receiver distance and the other a deep sea situation with a large vertical source-receiver distance. The reflection response from below the ...
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Controlled Source Electromagnetic (CSEM) is an important technique in hydrocarbon exploration, because it uses the large contrast in electrical resistivity to distinguishes between water and hydrocarbons. In a shallow sea environment, the airwave that is refracted from the air-water interface dominates the recorded signal at large offsets. Therefore, the hydrocarbon detection ability of the CSE...
متن کاملSeismic interferometry by crosscorrelation and by multidimensional deconvolution: a systematic comparison
Seismic interferometry, also known as Green’s function retrieval by crosscorrelation, has a wide range of applications, ranging from surface-wave tomography using ambient noise, to creating virtual sources for improved reflection seismology. Despite its successful applications, the crosscorrelation approach also has its limitations. The main underlying assumptions are that the medium is lossles...
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ژورنال
عنوان ژورنال: GEOPHYSICS
سال: 2011
ISSN: 0016-8033,1942-2156
DOI: 10.1190/1.3580633