Prestack depth migration method and device
The invention provides a prestack depth migration method and device, and relates to the technical field of seismic exploration. The prestack depth migration method comprises the steps that prestack earthquake data of a target working area are obtained; a singular trace in the prestack seismic data i...
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| creator | ZHANG JIANFENG LIU WEI LIU LINONG |
| description | The invention provides a prestack depth migration method and device, and relates to the technical field of seismic exploration. The prestack depth migration method comprises the steps that prestack earthquake data of a target working area are obtained; a singular trace in the prestack seismic data is removed to obtain to-be-processed seismic data; a slowness table and an equivalent Q value table are calculated according to the to-be-processed seismic data; according to the slowness table and the equivalent Q value table, a travel time table and a travel time Q ratio table are calculated, wherein the travel time table comprises a shot point travel time table and a detection point travel time table, and the travel time Q ratio table comprises a shot point travel time Q ratio table and a detection point travel time Q ratio table; and deflection hole diameters of all preset imaging points are read, and according to the travel time table, the travel time table and the deflection hole diameters, the deflection ampl |
| format | Patent |
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The prestack depth migration method comprises the steps that prestack earthquake data of a target working area are obtained; a singular trace in the prestack seismic data is removed to obtain to-be-processed seismic data; a slowness table and an equivalent Q value table are calculated according to the to-be-processed seismic data; according to the slowness table and the equivalent Q value table, a travel time table and a travel time Q ratio table are calculated, wherein the travel time table comprises a shot point travel time table and a detection point travel time table, and the travel time Q ratio table comprises a shot point travel time Q ratio table and a detection point travel time Q ratio table; and deflection hole diameters of all preset imaging points are read, and according to the travel time table, the travel time table and the deflection hole diameters, the deflection ampl</description><language>chi ; eng</language><subject>DETECTING MASSES OR OBJECTS ; GEOPHYSICS ; GRAVITATIONAL MEASUREMENTS ; MEASURING ; PHYSICS ; TESTING</subject><creationdate>2018</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20181225&DB=EPODOC&CC=CN&NR=109085648A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20181225&DB=EPODOC&CC=CN&NR=109085648A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>ZHANG JIANFENG</creatorcontrib><creatorcontrib>LIU WEI</creatorcontrib><creatorcontrib>LIU LINONG</creatorcontrib><title>Prestack depth migration method and device</title><description>The invention provides a prestack depth migration method and device, and relates to the technical field of seismic exploration. 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| language | chi ; eng |
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| subjects | DETECTING MASSES OR OBJECTS GEOPHYSICS GRAVITATIONAL MEASUREMENTS MEASURING PHYSICS TESTING |
| title | Prestack depth migration method and device |
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