Estimation of anisotropy parameters VTI (vertical transverse isotropy) using velocity variation with offset (VVO) method, case study: BS oil field

K. O.E. Simarmata, T. Suroso, S. Supriyanto

Research output: Contribution to journalConference articlepeer-review

Abstract

Implementation of anisotropy value in seismic data processing greatly affect seismic cross section image. In addition to enhanced seismic imagery, anisotropy can be used for identification of hydrocarbons. In this study, the vertical transverse isotropy (VTI) anisotropy parameter estimation by the VVO method has been done. The magnitude of the velocity value of the offset/angle is due to the ever-greater velocity with a large incidence angle being the basis of the VVO method to demonstrate the anisotropy effect. The residual moveout result of the time transfer correction caused by the velocity increase will be used as input data. Validity of the VVO method is tested using a synthetic forward modelling to obtain anisotropy parameters that describe the subsurface conditions of the target area which are then applied to the actual data. The results found that residual values continued to increase due to the anisotropy effect and there after the angle of 30 degrees with the value of ϵ = 0.14 and δ = 0.049.

Original languageEnglish
Article number012066
JournalIOP Conference Series: Earth and Environmental Science
Volume538
Issue number1
DOIs
Publication statusPublished - 28 Jul 2020
Event3rd Life and Environmental Sciences Academics Forum, LEAF 2019 - Depok, Indonesia
Duration: 11 Jul 2019 → …

Keywords

  • anisotropy parameter
  • offset
  • residual moveout
  • Velocity
  • VVO

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