PEMROSESAN DATA SEISMIK REFLEKSI UNTUK IDENTIFIKASI PERLAPISAN BATUBARA DI MANGUPEH KABUPATEN TEBO PROVINSI JAMBI
Survey with shallow seismic reflection method has been carried out in Tebo regency, Jambi province on around December 2012, to generate seismic layering that can identify the presence of coal at a certain depth and describe the subsurface geology. The data are a 2D land reflection seismic data with...
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| Main Authors: | , |
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| Format: | Theses and Dissertations NonPeerReviewed |
| Published: |
[Yogyakarta] : Universitas Gadjah Mada
2014
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| Subjects: | |
| Online Access: | https://repository.ugm.ac.id/129124/ http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=69502 |
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| Institution: | Universitas Gadjah Mada |
| Summary: | Survey with shallow seismic reflection method has been carried out in
Tebo regency, Jambi province on around December 2012, to generate seismic
layering that can identify the presence of coal at a certain depth and describe the
subsurface geology. The data are a 2D land reflection seismic data with seg-y
format that will be processed with using ProMAX software.
Seg-y data are combined with field geometry data in processing of header
load, then is carried out noise reduction (trace editing and filtering), seismic signal
amplification (deconvolution and TAR) and eliminating the influence of
topography. Gather data are ready for velocity analysis by choosing the right
velocity, and according to the semblance. Residual static correction is done to fix
the reflector continuity in stack display. The final stage of the process above will
produce velocity that will be migrated. The migration process is done to shift the
position of the reflector to the actual position by using Post Stack Time Migration
Method in order to obtain the final result of stacking seismic section. Seismic
section at the time domain is converted into the depth domain for easy
identification of the coal bedding and geological structure.
At seismic section resulted, it can be seen layers of coal in several depths
in accordance with previous geological studies, namely shallow drilling (coring)
and outcrop on the surface. In seismic section, it also shows different geological
structures such as shear fault structures. |
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