Structural Study of Judaida Subsurface Structure, North of Iraq

Abstract

This research focuses on the structural study of three folded horizons of Fat'ha, Jeribe, and the Euphrates in Judaida structure, Northern Iraq. Depth contour maps for three horizons using the time and velocity data called from seismic surveys. Seismic interpretation suggests that Judaida structure is a positively inverted structure. It is an anticline on the level of Tertiary and the top and an extensional structure on the level of pre-Tertiary sequence. Judaida structure is an asymmetrical longitudinal anticline; its Northeastern limb is steeper than its Southwestern limb. The axis of the anticline and the major normal faults are both trending toward the Northwest. The normal fault picked influencing only the pre-Late Cretaceous sequence where is the folding affected the whole sequence; of the extension forces, it affected the region during that period. Late Pliocene compressions resulted in folding and reverse faulting of the whole sequence and inversion of movement along the pre-existing normal faults. The resulted faults are called inverted faults.

Structural Study of the Late Oligocene-Early Miocene Sequence in Khabaz Oil Field, NE of Iraq

“…Base map for the study area showing studied boreholes and selected lines of seismic section (K-8 and KK-54) and tectonic map according to Al-Ameri and Zumberge (2012) Six wells data with two seismic lines (Line K8 and KK54) for Jeribe and Azkand succession are used to conducting the geometric analysis which include the description of fold and fault systems for the purpose of understanding the structural setting of Khabaz oil field. There are many previous studies that dealt with structural and geometric analysis of many structural and subsurface geological features using seismic sections and oil wells information throughout Iraq such as Al -Kubaisi and Ahmed (2018) Kareem et al (2021) and Naji et al (2022).…”