Comparison Of Scattered Energy Using Point Scatterers Versus Full 3D Finite Difference Modeling
We present results of 3D numerical modeling using a series of simple point scatterers to create synthetic seismic shot records collected over regular, discrete, vertical fracture systems. The background medium is taken to be constant velocity. The model contains a series of point scatterers delineat...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Technical Report |
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Massachusetts Institute of Technology. Earth Resources Laboratory
2012
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| Online Access: | http://hdl.handle.net/1721.1/68613 |
| _version_ | 1826214797623951360 |
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| author | Willis, Mark E. Zhang, Yang Burns, Daniel R. |
| author2 | Massachusetts Institute of Technology. Earth Resources Laboratory |
| author_facet | Massachusetts Institute of Technology. Earth Resources Laboratory Willis, Mark E. Zhang, Yang Burns, Daniel R. |
| author_sort | Willis, Mark E. |
| collection | MIT |
| description | We present results of 3D numerical modeling using a series of simple point scatterers to create synthetic seismic shot records collected over regular, discrete, vertical fracture systems. The background medium is taken to be constant velocity. The model contains a series of point scatterers delineating the top tip and bottom tip of each vertical fracture. We use these results to gain an understanding of some of the features seen in full 3D elastic modeling of vertical fractures. We compare our results to those of Willis et al (2003) and Willis et al (2004) for their 5 layer model with 50m spacing between discrete, vertical fractures. Our modeling shows that a series of back scattered events with both positive and negative moveouts are observed when the shot record is oriented normal to the direction of fracturing. When the shot record is both located in the middle of the fractured zone and is oriented normal to the direction of fracturing, a complicated series of beating is observed in the back scattered energy. When the shot record is oriented parallel to the fracturing, ringing wavetrains are observed which moveouts similar to reflections from many horizontal layers. The point scattering models are, in general, very consistent with the full 3D elastic modeling results. |
| first_indexed | 2024-09-23T16:11:38Z |
| format | Technical Report |
| id | mit-1721.1/68613 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T16:11:38Z |
| publishDate | 2012 |
| publisher | Massachusetts Institute of Technology. Earth Resources Laboratory |
| record_format | dspace |
| spelling | mit-1721.1/686132019-04-12T15:20:14Z Comparison Of Scattered Energy Using Point Scatterers Versus Full 3D Finite Difference Modeling Willis, Mark E. Zhang, Yang Burns, Daniel R. Massachusetts Institute of Technology. Earth Resources Laboratory Willis, Mark E. Zhang, Yang Burns, Daniel R. We present results of 3D numerical modeling using a series of simple point scatterers to create synthetic seismic shot records collected over regular, discrete, vertical fracture systems. The background medium is taken to be constant velocity. The model contains a series of point scatterers delineating the top tip and bottom tip of each vertical fracture. We use these results to gain an understanding of some of the features seen in full 3D elastic modeling of vertical fractures. We compare our results to those of Willis et al (2003) and Willis et al (2004) for their 5 layer model with 50m spacing between discrete, vertical fractures. Our modeling shows that a series of back scattered events with both positive and negative moveouts are observed when the shot record is oriented normal to the direction of fracturing. When the shot record is both located in the middle of the fractured zone and is oriented normal to the direction of fracturing, a complicated series of beating is observed in the back scattered energy. When the shot record is oriented parallel to the fracturing, ringing wavetrains are observed which moveouts similar to reflections from many horizontal layers. The point scattering models are, in general, very consistent with the full 3D elastic modeling results. Eni S.p.A. (Firm) United States. Dept. of Energy (Grant number DE-FC26-02NT15346) Massachusetts Institute of Technology. Earth Resources Laboratory 2012-01-20T17:47:00Z 2012-01-20T17:47:00Z 2004 Technical Report http://hdl.handle.net/1721.1/68613 Earth Resources Laboratory Industry Consortia Annual Report;2004-02 application/pdf Massachusetts Institute of Technology. Earth Resources Laboratory |
| spellingShingle | Willis, Mark E. Zhang, Yang Burns, Daniel R. Comparison Of Scattered Energy Using Point Scatterers Versus Full 3D Finite Difference Modeling |
| title | Comparison Of Scattered Energy Using Point Scatterers Versus Full 3D Finite Difference Modeling |
| title_full | Comparison Of Scattered Energy Using Point Scatterers Versus Full 3D Finite Difference Modeling |
| title_fullStr | Comparison Of Scattered Energy Using Point Scatterers Versus Full 3D Finite Difference Modeling |
| title_full_unstemmed | Comparison Of Scattered Energy Using Point Scatterers Versus Full 3D Finite Difference Modeling |
| title_short | Comparison Of Scattered Energy Using Point Scatterers Versus Full 3D Finite Difference Modeling |
| title_sort | comparison of scattered energy using point scatterers versus full 3d finite difference modeling |
| url | http://hdl.handle.net/1721.1/68613 |
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