Structural Study of Judaida Subsurface Structure, North of Iraq

Abstract

This study deals with interpretation of 2D seismic data with well information to evaluate the structural geology of the Judaida subsurface structure. The structural maps showed that the Judaida structure is an asymmetrical longitudinal fold, characterized by structural trend and facies changes that are parallel to Zagros, Taurus belts (NW – SE) (Jassim and Goff, 2006). The study area is located within unstable shelf, at Low Folded Zone (LFZ), within Hamrin belt between the Mesopotamia Fore deep from the SW, and the High Folded Zone (HFZ) from the NE. The fold generally flattens toward the Mesopotamian basin, where a relatively narrow anticline is separated by a wide syncline (Aqrawi et al., 2010). Economically, The Jeribe Formation is a main reservoir in the region, according to the results of Jd-1 well testing. The geometry of folds gives an indicator about the degree and orientation of strain, which in turn provides critical information about the deformation history of a region (Van Der Pluijm and Marshak, 2004). This study is considered one of many studies that employed the interpretation of 2D seismic data with wells data to evaluate the subsurface structural geology in different countries (Ahmad, 2018). In Iraq (Almayahi, 2004), (Al-Ridha and Al-Khafaji, 2019) and (Abdullah et al., 2021). In Egypt (Zahra, 2016), In Pakistan (Khan, 2019).