Separation of PP‐ and PS‐wave reflected seismic data using two‐dimensional finite offset common‐reflection‐surface traveltime approximation

2020 ◽  
Vol 68 (7) ◽  
pp. 2046-2063
Author(s):  
Raphael Di Carlo Silva dos Santos ◽  
João Carlos Ribeiro Cruz ◽  
Manuel de Jesus dos Santos Costa
2019 ◽  
Vol 16 (5) ◽  
pp. 1794-1805
Author(s):  
Fahd A Alhaidari ◽  
Saleh A Dossary ◽  
Wadha M Al-Mattar ◽  
Mahi M Kamaleldin ◽  
Areej H Abed ◽  
...  

Geophysics ◽  
1982 ◽  
Vol 47 (6) ◽  
pp. 957-959 ◽  
Author(s):  
Steve T. Hildebrand

The fan filter is a two‐dimensional (2-D) velocity filter that removes low apparent velocity events from seismic data. The convolutional representation was derived by Embree et al (1963) and by Fail and Grau (1963). Treitel et al (1967) extended the representation to include a recursive realization. Its basic use includes migration dip suppression, multiple suppression, slant stacking, and noise suppression in stacking.


2016 ◽  
Vol 13 (2) ◽  
pp. 119
Author(s):  
Subarsyah Subarsyah ◽  
Yulinar Firdaus

Kenampakan struktur geologi dan kontinuitas reflektor pada penampang seismik seringkali tidak teridentifikasi ketika data seismik di stack menggunakan metode stacking konvensional, terutama untuk data dengan jumlah fold coverage yang kecil. Data seismik Puslitbang Geologi Kelautan yang diperoleh pada Mei 2015, di Perairan Timur Pulau Waigeo, memiliki fold coverage yang relatif rendah sekitar 20. Untuk meningkatkan kualitas penampang seismik pada data ini perlu diterapkan metode Common Reflection Surface(CRS) sehingga interpretasi struktur geologi lebih mudah dan kontinuitas reflektor lebih baik. Metode ini diaplikasikan terhadap data seismik lintasan 6 dan 37. Penerapan metode CRS memberikan perbaikan pada citra penampang seismik terutama pada bagian basement akustik dan kontinuitas reflektor. Metode ini memberikan citra penampang seismik yang relatif lebih baik dibandingkan metode stacking konvensional karena metode CRS melibatkan trace seismik dari CDP di sekitarnya sesuai dengan besar parameter aperturnya. Kata kunci CRS Stack, CRS Attribut dan Paraxial Geological structure and reflector continuity on seismic section are often not clearly identified when the seismic data stacked use conventional stacking, especially seismic data with small fold coverage. Seismics data of Puslitbang Geologi Kelautan, that have been acquired on Mei 2015,in eastern part of Waigeo Island, have small number of fold coverage about 20. To enhance quality of seismic section on this data, it is necessary to apply Common Reflection Surface (CRS) method, in order to make geological structure interpretation easier dan better reflector continuity. This method applied to seismic data line 6 and 37. This application gives enhancement to seismic section especially at acoustic basement and reflector continuity. CRS method gives better seismic section than conventional stacking due to stacking process that involve seismic trace around the CDP along its aperture size. Keywords: CRS Stack, CRS Attribut and Paraxial


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