Identifying the Jeribe Formation Interval in the Khurmala Dome Field Using Lithology and Gamma-Ray Log Correlation Analysis

The Middle Miocene-aged Jeribe Formation is an important reservoir in many of Iraq's oilfields. This study identifies the Jeribe Formation in several drilled wells at the Khurmala Dome Field using gamma-ray log and lithology analyses, comparing gamma-ray log analysis for the Jeribe Formation of a subset of wells at Khurmala Dome Field and two wells from Jari Pika Field and Taza Field. The lithology analyses of selected wells at Khurmala Field, along with the formation’s lithology, were studied at local types and other locations, which indicates the presence of the Jeribe Formation. The analysis results denoted its lateral continuity, lithology similarity, and thickness variations over location differences for the formation at selected wells of the Khurmala Dome Field. Both gamma-ray log and lithology analyses determined the interval's top, bottom, and thickness. Future studies should include biostratigraphy, correlation with wells drilled in the north part of the Khurmala Dome, gas and hydrocarbon analyses, and reservoir modeling to evaluate the amount of hydrocarbons within the formation.