Abstract

An interpretative study of the two-dimensional seismic data of the Afaq area was conducted using the Petrel 2017 software. 2D seismic reflection sections are used to give a structural interpretation of Afaq structure based on synthetic seismogram and well log data. Three reflectors, Zubair, Yamama, and Gotina Formations, were selected. These reflectors are defined from well west kifl (wk-1), Where located adjacent to the study area. Structural maps of the Zubair, Yamama, and Gotnia formations are prepared and interpreted, including TWT maps, Average velocity maps, and depth maps. The studies concluded that the Afaq structure area does not contain main faults, but secondary faults with short and limited extensions. The structure of Afaq is a Monocline structure at Zubair and turns into a semi-structure (trap structure) at the Yamama and Gotnia formations. The study also showed that the structure of Afaq is plunging structure towards the east.

Highlights

  • This research is the first for the region and included a geophysical study by using the Seismic Reflection method; it aims to interpret of Afaq structure, the results obtained from the ministry of oil using two-dimensional data of Afaq structure area in three Formations which are the Gotnia, Yamama, and Zubair Formations

  • Description of the Picked Reflectors This study focused on three Formations, Zubair, Yamama, and Gotnia, to clarify the situation structure for the Afaq structure area and because they are the most important reservoirs in the region

  • The study concludes the following Three reflectors, Zubair, Yamama, and Gotnia Formations are defined using synthetic seismogram in the time domain for WK-1 well in West Kifl field, wavelet of three Formations appeared as the following Zubair as a trough, Yamama between trough and peak, while the Gotnia as Peak

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Summary

Introduction

The interpretation of the reflection seismic data is one of the most important elements of a successful oil and gas exploration program. [1]. This research is the first for the region and included a geophysical study by using the Seismic Reflection method; it aims to interpret of Afaq structure, the results obtained from the ministry of oil using two-dimensional data of Afaq structure area in three Formations which are the Gotnia, Yamama, and Zubair Formations. While the Zubair Formation belongs to Late Barremian - Aptian sequence within the Upper Tithonian-Aptian Thamama Group, which corresponds to the Late Tithonian Early Turonian tectonostratigraphic megasequence Ap8. It was introduced and amended in the Zubair oil field by Bellen et al, (1959) in[6]. It was mainly prepared as a stratigraphic test and small positive closure indicated by gravity and seismic survey.[5]

Materials and Methods
Conclusions

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