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The CRS stack method was introduced for the first time by the Wave Inversion Technology (WIT) consortium in 1998. This method is initiated from an assumption that a reflector is composed of many reflection surface segments, which its length is identical to the width of Fresnel zone at a depth. The C...
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| Format: | Theses |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/21224 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | The CRS stack method was introduced for the first time by the Wave Inversion Technology (WIT) consortium in 1998. This method is initiated from an assumption that a reflector is composed of many reflection surface segments, which its length is identical to the width of Fresnel zone at a depth. The CRS-Stack method takes into account the slope of the reflectors in operator stack estimation. The successful application of this method on 2D seismic data encourages the application of these methods on 3D seismic data, where processing of 3D seismic data by using conventional stacking method which is now commonly implemented in the industries is often not sufficient to describe complex subsurface conditions. <br />
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This thesis shows the application of the CRS-Stack method on 2D synthetic and 3D real seismic data. In its determination of the operator stack, the user is required to be able to estimate the three attributes of CRS (for the 2D case) or 8 attributes (for the 3D case), prior to stacking operations using the CRS-Stack is implemented. These CRS attributes describe the character of local reflector which contained in seismic data. Processing data with 2D synthetic seismic data aimed at proving the strength of the CRS-stack method, by comparing the stack section produced from the two methods and analyzed further by AVO analysis. From this comparison, the CRS-stack method proved to give better results than conventional methods. <br />
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Its application to 3D real seismic data is the next step that has been carried out, which has goal to test the use of the CRS-stack method on 3D data. The stack section of the CRS-stack method and the conventional 3D is being compared and shown that the CRS-stack method can image a better the subsurface with higher signal to noise ratio. <br />
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In the end, CRS-Stack method in both 2D and 3D seismic data, proved to be superior in characterizing the subsurface structure, by providing a stack section which has better quality than conventional methods |
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