Subscribe Now Subscribe Today
Science Alert
 
Blue
   
Curve Top
Journal of Applied Sciences
  Year: 2014 | Volume: 14 | Issue: 11 | Page No.: 1139-1146
DOI: 10.3923/jas.2014.1139.1146
 
Facebook Twitter Digg Reddit Linkedin StumbleUpon E-mail

Seismic Illumination Analysis in Poor Quality Data Using Focal Beam Method: Full 3D vs. Conventional 3D Acquisition Design

A.H. Abdul Latiff, D.P. Ghosh, Z.Z. Tuan Harith and S.N.F. Jamaludin

Abstract:
This research aims at improving our understanding on seismic data in shallow gas cloud region where subsurface image quality is generally poor. The distorted images underneath gas zones usually contain precious information of hydrocarbon accumulation. Previously, we analyze the different depths and shallow gas concentration by using focal beam method as both factors contribute to poor subsurface seismic image underneath the gas accumulation. Since those analyses used only full 3D survey design which unrealistic, the objective of this work is to compare full 3D illumination with industry standard 3D survey’s illumination and analyze the suitability of both design in shallow gas cloud region. Standard 3D configuration contains single source line with four streamer lines on either side of source line. At the beginning, a velocity model was built with constant gas cloud velocity of 1400 m sec-1 to mimic the real field data. Then analyses on differences from both survey designs will be explained in term of resolution function and Amplitude Versus Ray Parameter (AVP) imprint for various frequency content, namely at 5 (low frequency), 30 (center frequency) and 45 Hz (high frequency). We will demonstrate that by using focal beam method for gas cloud image analysis, good images can be obtained irrespective of source–receiver configuration, particularly in high frequency content.
PDF Fulltext XML References Citation Report Citation
How to cite this article:

A.H. Abdul Latiff, D.P. Ghosh, Z.Z. Tuan Harith and S.N.F. Jamaludin, 2014. Seismic Illumination Analysis in Poor Quality Data Using Focal Beam Method: Full 3D vs. Conventional 3D Acquisition Design. Journal of Applied Sciences, 14: 1139-1146.

DOI: 10.3923/jas.2014.1139.1146

URL: https://scialert.net/abstract/?doi=jas.2014.1139.1146

COMMENT ON THIS PAPER
 
 
 

 

 
 
 
 
 
 
 
 
 

 
 
 
 
 
 
 

Curve Bottom