Open AccessUpdating Subsurface Image of Khashim Al-Ahmer Gas Field Using the Interpretation for Anisotropic Velocity Model North-Eastern Iraq
Author(s) -
Yasir Shyaa,
Ali M. Al-Rahim
Publication year - 2021
Publication title -
iraqi geological journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.2
H-Index - 5
eISSN - 2663-8754
pISSN - 2414-6064
DOI - 10.46717/igj.54.2f.10ms-2021-12-27
Subject(s) - geology , fault (geology) , dome (geology) , anisotropy , attenuation , seismology , field (mathematics) , natural gas field , interpretation (philosophy) , thrust , thrust fault , petrology , mineralogy , geomorphology , optics , chemistry , physics , mathematics , organic chemistry , computer science , natural gas , pure mathematics , thermodynamics , programming language
This research deals with structural interpretation of Khashim Al-Ahmer Gas Field North-Eastern Iraq in Diyala Province, using the interpretation of inhomogeneous velocity data. The specific target in this field is the gaseous Jeribe reservoir representing the L. Miocene-Tertiary period. A very thick layer of evaporates Al-Fatha Formation is overlap the Jeribe Formation in the gas field and play as a sealed bed and transition zone for faults movement as a thrust fault. The thrust fault with gas content negatively affected the seismic energy, causing a high attenuation below the level of Al-Fatha Formation in the dome of the Khashm Al-Ahmer structure. Using the interval velocities derived from the sonic logs of five surrounding wells that represent the inhomogeneous behavior of the seismic wave velocity within the rock layers, a model of the velocity behavior in the field was built and the extent of the Jeribe gas reservoir was reconstructed according to the new velocities interpretation data.