Joint iterative migration of surface and borehole gravity gradiometry data
- Le Wan (University of Utah) | Muran Han (University of Utah) | Michael Zhdanov (University of Utah)
- Document ID
- Society of Exploration Geophysicists
- 2016 SEG International Exposition and Annual Meeting, 16-21 October, Dallas, Texas
- Publication Date
- Document Type
- Conference Paper
- 2016. Society of Exploration Geophysicists
- Modeling, Imaging, Gravity, Density, Migration
- 1 in the last 30 days
- 23 since 2007
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Gravity and gravity gradiometry surveys have been widely used in mineral and petroleum exploration. Borehole gravity measurements can help to detect a deep target, which is of importance in studying both mineral and hydrocarbon (HC) deposits. Joint interpretation of surface and borehole gravity data can provide more insight about the subsurface geological structures than separate surface and borehole data. The major goal of this joint interpretation is to produce a 3D density distribution under the area of the a surface survey and in the vicinity of a borehole. This paper develops a novel approach to solving this problem based on the concept of potential field migration, which produces images of the subsurface density distribution. By applying the migration iteratively, we can generate a rigorous inverse model of the density distribution. The method is illustrated by the joint migration of the borehole and surface data for a set of representative density models.
Presentation Date: Wednesday, October 19, 2016
Start Time: 2:45:00 PM
Presentation Type: ORAL
|File Size||1 MB||Number of Pages||5|
Golden,H.,W.McRae, andA.Veryaskin,2007,Description of and results from a novel borehole gravity gradiometer:Presented at the ASEG 19th Geophysical Conference and Exhibition,10.1071/ASEG2007ab047.
Krahenbuhl,R., andY.Li,2008,Joint inversion of surface and borehole 4D gravity data for continuous characterization of fluid contact movement:78th Annual International Meeting, SEG, Expanded Abstracts,726–729,10.1190/1.3063750.
Li,Y., andD. W.Oldenburg,2000,Joint inversion of surface and three-component borehole magnetic data:Geophysics,65,540–552,10.1190/1.1444749.
Nind,C. J. M., andJ. D.MacQueen,2013,The borehole gravity meter: Development and results:10th Biennial International Conference and Exposition,10.2118/166833-MS.
Rim,H., andY.Li,2010,Single-borehole imaging using gravity gradiometer data:80th Annual International Meeting, SEG, Expanded Abstracts,1137–1140,10.1190/1.3513045.
Smith,N. J.,1950,The case for gravity data from boreholes:Geophysics,15,605–636,10.1190/1.1437623.
Sun,J., andY.Li,2010,Inversion of surface and borehole gravity with thresholding and density constraints,80th Annual International Meeting, SEG,10.1190/1.3513191.
Wan,L., andM. S.Zhdanov,2008,Focusing inversion of marine full-tensor gradiometry data in offshore geophysical exploration:76th Annual International Meeting, SEG, Expanded Abstracts,751–754,10.1190/1.3063755.
Wan,L., andM.Zhdanov,2013,Iterative migration of gravity and gravity gradiometry data:83rd Annual International Meeting, SEG,10.1190/segam2013-1036.1.
Zhdanov,M. S.,X.Liu,G. A.Wilson, andL.Wan,2011,Potential field migration for rapid imaging of gravity gradiometry data:Geophysical Prospecting,59,1052–1071,10.1111/j.1365-2478.2011.01005.x.