| Abstract: | Prediction of shear-wave velocity plays an important role in seismic modeling, amplitude analysis with offset, and other exploration applications. This paper presents a method for predicting S-wave velocity from the P-wave velocity on the basis of the moduli of dry rock. Elastic velocities of water-saturated sediments at low frequencies can be predicted from the moduli of dry rock by using Gassmann‘s equation; hence, if the moduli of dry rock can be estimated from P-wave velocities, then S-wave velocities easily can be predicted from the moduli. Dry rock bulk modulus can be related to the shear modulus through a compaction constant. The numerical results indicate that the predicted S-wave velocities for consolidated and unconsolidated sediments agree well with measured velocities if differential pressure is greater than approximately 5 MPa. An advantage of this method is that there are no adjustable parameters to be chosen, such as the pore-aspect ratios required in some other methods. The predicted S-wave velocity depends only on the measured P-wave velocity and porosity. ?? 2006 Society of Exploration Geophysicists. |
| Genre: | Article |
| ProdID: | 70028572 |
| Citation Author: | Lee, M. W. |
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| Citation Issue: | 6 |
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| Citation Language: | English |
| Citation Larger Work Title: | Geophysics |
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| Citation Search Results Text: | A simple method of predicting S-wave velocity; 2006; Article; Journal; Geophysics; Lee, M. W. |
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| Citation Volume: | 71 |
| Citation Year: | 2006 |
| Type: | citation/reference |
| Text: | A simple method of predicting S-wave velocity; 2006; Article; Journal; Geophysics; Lee, M. W. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.1190/1.2357833 |
| Date Other: | Sun, 1 Jan 2006 00:00 -0600 |
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