Name: data processing methods for 3d seismic imaging of subsurface volcanoes: applications to the tarim flood basalt
Uploaded: 2017-08-07T14:00:00
Description: Watch this Scientific Journal Video about Data Processing Methods for 3D Seismic Imaging of Subsurface Volcanoes: Applications to the Tarim Flood Basalt at JoVE.com

Forfatterne anerkende den finansielle støtte af NSFC til WT (grant nr. 41272368) og QKX (grant nr. 41630205).

NOTE: The data processing procedures include: synthetic seismogram calculation, synthetic-real seismic trace correlation, and geo-body extraction. Below are the step-by-step details of each procedure.
1. Calculation of Synthetic Seismogram
<ol>
	<li>Calculate the acoustic impedance at each interval of the down-well logging curve. 
	NOTE: Acoustic impedance is the product of &#39;seismic wave velocities&#39; and &#39;density&#39; (&#961;*&#957;)). The data are often averaged to sampling ...

<ol>
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Soc. 169 (5), 503-506 (2012).</li><li>Tian, W., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+Tarim+picrite-basalt-rhyolite+suite,+a+Permian+flood+basalt+from+northwest+China+with+contrasting+rhyolites+produced+by+fractional+crystallization+and+anatexis.">The Tarim picrite-basalt-rhyolite suite, a Permian flood basalt from northwest China with contrasting rhyolites produced by fractional crystallization and anatexis.</a> CoMP. 160 (3), 407-425 (2010).</li><li>Chen, M. -. M., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Peridotite+and+pyroxenite+xenoliths+from+Tarim,+NW+China:+Evidences+for+melt+depletion+and+mantle+refertilization+in+the+mantle+source+region+of+the+Tarim+flood+basalt.">Peridotite and pyroxenite xenoliths from Tarim, NW China: Evidences for melt depletion and mantle refertilization in the mantle source region of the Tarim flood basalt.</a> Lithos. 204, 97-111 (2014).</li><li>Magee, C., Maharaj, S. M., Wrona, T., Jackson, C. A. 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Her viser vi 2 metoder til at illustrere morfologi og struktur af VVS-system af begravet basaltiske vulkaner; en opacitet rendering, den anden er på tide udskæring.
Opacitet rendering metode er egnet til geo-organer, der har løbende og i nærheden af horisontale grænseflader med de encasing lag. Med denne metode, kan man udvinde 3D morfologi af magma kamre. Normalt, bør strømmen retninger langs længdeaksen på magma kamre. Det er også vigtigt, at de overflade horisont har høj refleksi...

De fleste af de industrielle seismiske imaging projekter i sedimentære bassiner sigter mod at udforske for kulbrinte reservoirer. I de seneste år, har kulbrinte udforskning udvidet til bassiner indeholder store mængder af magma-bjergarter, fordi mange af de volcanogenic bassiner har betydelige olie og gas reservoirer. Men på grund af grænsefladen i magmabjergarter i volcanogenic bassiner, seismisk databehandling præsenterer en række udfordringer fremkaldt af forskellige indtrængen, såsom reduceret energi transmission, iboende dæmpning, interferens virkninger, refraktion og spredning1. Derfor, oliefelt virksomheder fokuserer deres bestræbelser på at reducere disse en "negativ indvirkning" på seismiske billeddannelse2,3,4.
Magma organer inden for sedimentære bassiner, let kan identificeres af to-dimensionelle eller 3D seismiske refleksion imaging på grund af den store akustiske impedans kontrast med encasing klipper1,5,6. Denne metode kan give spektakulære billeder af både lodrette og vandrette strukturer af den vulkanske VVS systemer7,8,9,10,11,12,13. Strategier af imaging undergrunden vulkaner er imidlertid meget forskellig fra olie og gas udforskninger8,14,15. Det har begrænset anvendelse af industrielle seismiske data i studier af undergrunden vulkaner, bortset fra et par vellykkede tilfælde10,15,16. I dette papir rapportere vi detaljerede procedurer af seismisk databehandling, der er tilpasset til fortolkning af undergrunden vulkaner. Vi behandle to seismiske kuber, TZ47 og YM2 (figur 1), at vise hvordan man visualisere begravet magmatiske organer i Tarim oversvømmelse basalt17.

<table border="0" cellpadding="0" cellspacing="0" width="627">
	<tbody>
		<tr height="42">
			<td height="42" style="height:42px;width:216px;">The Petrel E&#38;P software platform</td>
			<td style="width:125px;">Schlumberger</td>
			<td style="width:119px;"></td>
			<td style="width:167px;">software version:2014</td>
		</tr>
	</tbody>
</table>

data processing methods for 3d seismic imaging of subsurface volcanoes: applications to the tarim flood basalt

Morfologi og struktur af VVS-systemer kan give vigtige oplysninger om udbrud sats og stil af basalt lava felter. Den mest kraftfulde måde at studere undergrunden geo-organer er at anvende industrielle 3D refleksion seismologiske billeddannelse. Strategier til billede undergrunden vulkaner er imidlertid meget forskellig fra olie og gas reservoirer. I denne undersøgelse behandler vi seismiske datakuber fra den nordlige Tarim bassin, Kina, til at illustrere hvordan man visualisere sills gennem opacitet rendering teknikker og hvordan man billede af ledningsanlæg af tid-udskæring. I det første tilfælde isoleret vi sonder af seismiske horisonter mærkning kontakter mellem karme og omslutter strata, anvende opacitet rendering teknikker for at udtrække sills fra seismiske kuben. Den resulterende detaljerede vindueskarm morfologi viser, at flowretning fra byens dome rand. I den anden seismiske kube bruger vi tid-skiver til billede ledningsanlæg, som svarer til markant bonusbeløbene inden for de encasing klipper. Et sæt af tid-skiver opnået på forskellige dybder vis at Tarim oversvømmelsen basalter brød ud fra centrale vulkaner, fodret med separate rør-lignende ledningsanlæg.

Vi påvise nytten af de teknikker, der er beskrevet ovenfor ved at anvende dem på 2 typer af magmatiske organer, vandrette karme og lodret vulkanske ledningsanlæg. Udvinding af sills foregår ved hjælp af uigennemsigtige rendering teknik, og fortolkning af den vulkanske conduit udføres ved hjælp af udskæring teknik.
Udvinding af karme
Industrielle Bore brønde genne...

Watch this Scientific Journal Video about Data Processing Methods for 3D Seismic Imaging of Subsurface Volcanoes: Applications to the Tarim Flood Basalt at JoVE.com

Data Processing Methods for 3D Seismic Imaging of Subsurface Volcanoes: Applications to the Tarim Flood Basalt

Tre-dimensionelle (3D) refleksion seismologi er en kraftfuld metode til imaging undergrunden vulkaner. Ved hjælp af industrielle 3D seismologiske data fra Tarim-bassinet, illustrere vi, hvordan til at udtrække sills og undergrunden vulkaner ledningsanlæg fra seismiske datakuber.

Databehandling metoder for 3D seismiske billeddannelse af undergrunden vulkaner: programmer til Tarim oversvømmelse Basalt

The morphology and structure of plumbing systems can provide key information on the eruption rate and style of basalt lava fields. The most powerful way ...

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