Abstract
The method of 3D finite-difference migration of the field of refracted waves is proposed, which takes into account their penetration into refracting strata. Theoretical grounds and special features of the method of finite-difference deep migration of the field of refracted waves have been presented in the paper. Effectiveness and facilities of application of proposed method of 3D finite-difference migration of the field of refracted waves have been demonstrated on the model example.
Highlights
Òîðîèäàëüíàÿ ñèñòåìà êîîðäèíàò èìååò âèäφ = arctg y , x ãäå τ = V0 β t l , t l âðåìÿ ïðîõîæäåíèÿ âîëíû ïðè ëèíåéíîì çàêîíå èçìåíåíèÿ ñêîðîñòè, a ðàäèóñ öåíòðàëüíîãî êðóãà òîðà, φ óãëîâàÿ êîîðäèíàòà îðòîãîíàëüíîãî ïåðåñå÷åíèÿ òîðà, τ ðàäèàëüíàÿ êîîðäèíàòà íà ïåðåñå÷åíèè òîðà, γ óãëîâàÿ êîîðäèíàòà íà ïåðåñå÷åíèè òîðà
Ìèãðàöèÿ ïîçâîëÿåò ñôîðìèðîâàòü èçîáðàæåíèå ñðåäû ïóòåì òðàíñôîðìàöèè âîëíîâîãî ïîëÿ, íåïîñðåäñòâåííî çàðåãèñòðèðîâàííîãî â ïðîöåññå ñåéñìè÷åñêèõ íàáëþäåíèé
ÌÎÃÒ ÿâëÿåòñÿ îäíèì èç âåäóùèõ ìåòîäîâ îáðàáîòêè äàííûõ ñåéñìîðàçâåäêè ìåòîäà îòðàæåííûõ âîëí (ÌÎÂ) ïðè ïîèñêå è ðàçâåäêå ìåñòîðîæäåíèé ïîëåçíûõ èñêîïàåìûõ [Mayne, 1962]
Summary
φ = arctg y , x ãäå τ = V0 β t l , t l âðåìÿ ïðîõîæäåíèÿ âîëíû ïðè ëèíåéíîì çàêîíå èçìåíåíèÿ ñêîðîñòè, a ðàäèóñ öåíòðàëüíîãî êðóãà òîðà, φ óãëîâàÿ êîîðäèíàòà îðòîãîíàëüíîãî ïåðåñå÷åíèÿ òîðà, τ ðàäèàëüíàÿ êîîðäèíàòà íà ïåðåñå÷åíèè òîðà, γ óãëîâàÿ êîîðäèíàòà íà ïåðåñå÷åíèè òîðà.
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