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

Die Autoren erkennen die finanzielle Unterstützung der NSFC, WT (Grant Nr. 41272368) und 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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Hier zeigen wir 2 Methoden für die Darstellung der Morphologie und Struktur des Sanitärsystems begraben basaltischen Vulkane; Deckkraft rendern, das andere ist an der Zeit schneiden.
Die Deckkraft-Rendering-Methode eignet sich für Geo-Körpern, die kontinuierliche und in der Nähe von horizontalen Schnittstellen mit den Maschinenkapselung Schichten haben. Mit dieser Methode können die 3D Morphologie der Magma Lappen extrahiert werden. Normalerweise sollte die Fließrichtungen entlang der L...

Der Großteil der seismischen bildgebenden Industrieprojekte in Sedimentbecken soll für Kohlenwasserstoff-Lagerstätten zu erkunden. In den letzten Jahren expandierte Kohlenwasserstoffexploration, Becken, große Mengen von magmatischen Gesteinen enthalten, weil viele der volcanogenic Becken beträchtliche Öl- und Gaslagerstätten. Jedoch wegen der Schnittstelle von magmatischen Gesteinen in den volcanogenic Becken präsentiert seismische Datenverarbeitung eine Reihe von Herausforderungen, die durch verschiedene Eingriffe, wie reduzierte Energieübertragung, innere Dämpfung, Interferenzeffekte, Brechung und Streuung1induziert. Daher fokussieren Ölfeld Unternehmen ihre Anstrengungen auf die Verringerung einer "negativen Auswirkungen" auf seismische bildgebenden2,3,4.
Magmatische Gremien Sedimentbecken sind leicht erkennbar durch zwei dimensionale oder 3D reflexionsseismischen Bildgebung durch den großen akustische Impedanz Kontrast mit dem Maschinenkapselung Felsen1,5,6. Diese Methode bieten spektakuläre Bilder sowohl horizontale als auch vertikale Strukturen der vulkanischen Sanitär Systeme7,8,9,10,11,12,13. Allerdings unterscheiden sich die Strategien von imaging-Untergrund Vulkane sehr von der Öl- und Gasindustrie Erkundungen8,14,15. Dies hat die Verwendung von industriellen seismischen Daten in Studien der unterirdischen Vulkane, abgesehen von wenigen erfolgreichen Fällen10,15,16beschränkt. In diesem Beitrag berichten wir über Modalitäten der seismischen Datenverarbeitung, die für die Interpretation der unterirdischen Vulkane angepasst sind. Wir verarbeiten zwei seismische Würfel, TZ47 und YM2 (Abbildung 1), zeigen, wie man die vergrabenen magmatischen Körper im Tarim Flut Basalt17zu visualisieren.

<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

Die Morphologie und Struktur von Sanitärsystemen bieten wichtigen Informationen über den Ausbruch-Rate und Stil der Basalt-Lava-Felder. Die leistungsfähigste Weise, Untergrundes Geo-Einrichtungen zu studieren ist, industrielle 3D Reflexion seismologischen Bildgebung zu verwenden. Strategien zur Bild-Untergrund-Vulkane sind jedoch sehr verschieden von dem von Öl und Gas-Reservoirs. In dieser Studie verarbeiten wir seismische Datenwürfel aus dem nördlichen Tarim-Becken, China, wie Schweller durch Deckkraft-Rendering-Techniken zu visualisieren und die Leitungen von Time-slicing Bild veranschaulichen. Im ersten Fall isoliert wir Sonden durch die seismischen Horizonte markieren die Kontakte zwischen Schweller und umschließt Schichten, Deckkraft Rendering Techniken um Fensterbänke aus dem seismischen Cube zu extrahieren. Die daraus resultierende detaillierte Schweller Morphologie zeigt, dass die Fließrichtung von der Mitte der Kuppel bis zum Rand. Im zweiten seismische Cube verwenden wir Zeitscheiben um die Conduits Bild markierten Diskontinuitäten in den Maschinenkapselung Felsen entspricht. Eine Reihe von Zeitscheiben erhalten in verschiedenen Tiefen zeigen, dass die Tarim Flutbasalte aus zentralen Vulkane, separates Rohr-ähnliche Leitungen gespeist ausgebrochen.

Wir zeigen die Nützlichkeit der Techniken, die oben beschrieben werden, indem sie auf 2 Arten von magmatischen Körper, horizontale Schweller und vertikale vulkanischen Leitungen. Extraktion der Schwellen erfolgt mithilfe der undurchsichtigen Rendering-Technik und Auslegung der vulkanischen Leitung erfolgt durch slicing-Technik.
Gewinnung von Schwellen
Industrielle bohre...

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

Dreidimensionale (3D) Reflexion Seismologie ist eine leistungsfähige Methode für imaging unterirdischen Vulkane. Mithilfe von industriellen 3D seismologischen Daten aus der Tarim-Becken, veranschaulichen wir die Fensterbänke und die Leitungen der unterirdischen Vulkane aus seismischen Datenwürfel zu extrahieren.

Datenverarbeitung für seismische 3D-Bildgebung der unterirdischen Vulkane: Anwendungen der Tarim Flut 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 ...

The overall goal of this procedure is to illustrate how to extract sills and conduits of subsurface volcanoes from seismic data cubes. This method can help answer key questions in volcanology, as the structure and the morphology of the plumbing systems can provide key information about eruption rate and the style of basaltic lava fields. The main advantage of this technique is that the 3D structure of subsurface volcanoes are extracted from industrial 3D reflection seismology images for overall exploration.In this study, we process seismic data cubes from the Tarim Basin in China, to illustrate how to visualize sills and the conduce of subsurface volcanoes. To begin the calculation, first import the seismic acoustic data cube into an appropriate data processing program. Display the data in 2D and 3D, and adjust the data set appearances, as desired.Then open the settings menu for the well of interest, and open the Time sub menu. Select Create new and name the time log. Use the velocity function DT data to create a one-way time log from the acoustic log.Next, in the 3D data window, select TWT, to display the data in the two-way time domain. Set the newly-created one-way time log as the active time-depth relationship. Select the wired logs of interest to display their seismic profiles in the 3D window.Then, use the Manipulate plane tool to adjust the profile, until it intersects the well. Next, in the Seismic tree, uncheck one plane. In the Well tops tree, select the corresponding well filter and set it to surface.Enable annotations for the Well tops and verify that wired log domains are displayed with the seismic profile. Next, open the Seismic well tie menu. Set the study to Integrated seismic well tie and select the well of interest.Set the TDR to the calibrated one-way time log. and select the seismic data cube. Select any log from the RC calculation method options and fill in the corresponding parameters.Use the Wavelet tool box to create or edit a Ricker wavelet. Click OK to generate the synthetic seismogram. Repeat the process if the synthetic trace does not satisfactorily match the seismic data.Then open the one-way time log created from the acoustic log. Identify a real continual seismic horizon that intersects the well of interest. Add a small increment of time to the Well Log, to adjust the depth of the synthetic trace.Open the calculator tool. Compare the Well log and the seismic horizon. Continue adjusting the Well log in this way to maximize the overlap of the high amplitude reflectors in the synthetic and real traces.The synthetic seismogram from the wired log we have force features. Because the log imaging does not perfectly fit with the burgherwalls. Regional geological information, and a vertical seismic profile are needed to correct and optimize the seismogram.Open the Seismic interpretation menu, and select Insert a Horizon probe. In the individual probe settings, open the Horizons tab, and select two high amplitude surfaces encasing the sills of interest. Select the new probe to display a seismic cube in the 3D window.Open the probe settings, and select the opacity tab. Use the seismic amplitude histogram, to decrease the opacity of low amplitude reflections, leaving only the basaltic sills of interest. Adjust the histogram repeatedly, until the desired shape of the interested geobody of igneous rocks, is achieved.Next, open the Volume attributes menu. Set the category to Structural methods and the Attribute to variance. Set the seismic cube as the input.Enable the Realize option to improve performance and run the process. Choose the variance cube, and select Insert time slice intersection. Use the Manipulate plane tool, in the 3D window, to move the slices to optimize the visualization of discontinuities, corresponding to vertical feeding conduits.Repeat this process with the Seismic amplitude cube. Adjust the two-way time, and vary the slicing depths, to find the best visualization parameters for the data. A 3D seismic data cube, from the Northern Tarim Basin, was processed with this technique.Separated lava lobes were observed in the extracted horizontal sills, suggesting that the lava flow, moves from the dome center to the rim of the dome. Time slices were obtained from the seismic cube, and from a variance data cube to visualize vertical volcanic conduits. Different slicing depths were required for the seismic and variance cubes to visualize the conduits.While attempting this procedure, remember to obtain adequate knowledge of regional geology, the stratigraphic framework, and the characteristics of the marker horizons. After it's development, this technique paved the way for researchers in the field of volcanology, to investigate the 3D structures of the subsurface parts of ash in volcanoes. After watching this video, you should have a good understanding of how to image subsurface volcanoes using our industrial, 3D seismological data cube.

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