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Seismic interferometry is simply the study of interference between the seismic signals that aims to obtain information on the difference between the signal pairs. Seismic Interferometry first introduced by Claerbout in 1968, Clarebout showed that the reflectance response of horizontal layers can be...
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| Format: | Final Project |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/22697 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Seismic interferometry is simply the study of interference between the seismic signals that aims to obtain information on the difference between the signal pairs. Seismic Interferometry first introduced by Claerbout in 1968, Clarebout showed that the reflectance response of horizontal layers can be synthesized from the transmittance response. Based on the source, seismic interferometry method can be divided into controlled source seismic interferometry and passive seismic interferometry. Seismic Interferometry can make one receiver be considered as a source, even though there is no physical source, so that the receiver is referred to as virtual resources (virtual source). Advantages of seismic interferometry methods are able to use natural seismic sources with low frequency compared with the conventional method which requires the active seismic sources that are more costly. One of the reasons this method is interesting is the fact that the seismic response could be obtained from field measurement data in a simple way. This paper will discuss the basic concepts and principles of interferometry as well as the application and utilization of seismic interferometry to transform VSP data (Vertical Seismic Profile) into SWP data (Single Well Profile) and Cross well data. We synthesized cross-well seismic records by performing cross correlation between the response of geophone set at two wells with the source located on the surface and the response of each geophone has been normalized and filtered first. The results of the cross-correlation were not perfectly identical as a genuine cross-well seismic records. However, from the comparison of cross correlation result and the response of the original we can seen some similarities so it can be concluded that this method may be used as another method for synthesizing the data crosswell without having to use a source in the well. |
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