Evaluation of Tertiary Reservoir in Hamrin Oil Field, North Iraq

Faraj Ahmad Al-Sulaiman,Thamer Aadi Ahmed

doi:10.33805/2641-7383.123

Abstract

Hamrin oil field is one of the important oil field in northern Iraq. The field represent an asymmetrical anticline that extend North West-South East for more than 101 km, with width (4-7) km. Hamrin oil field was located at the south western boundary of foothill zone of the unstable shelf area according to the tectonic division of Iraq. The Tertiary reservoir represented by Jeribe and Euphrates formations as main reservoirs and Dhiban formation as secondary reservoir that represent an attractive petroleum completion target in Hamrin oil field. The aim of this study is to determine the petrophysical properties of these formations, using log data, because these properties affect the estimate of reserves (porosity and saturation) and well deliverability (permeability). This study shows that the petro physical properties of these formations were controlled by depositional environment, diagenesis and tectonic activity. The evaluation of the petro physical for tertiary reservoir in Hamrin oil field was necessary to choose the best interval for well completion.

Highlights

Hamrin oil field is one of the important oil fields in northern Iraq.The field represent an asymmetrical anticline that extend NW-SE for more than 101 km, with width (4-7 km) width (Figure 1) [1]
Hamrin oil field was located at the south western boundary of foothill zone of the unstable shelf area according to the tectonic division of Iraq
The Tertiary reservoir represented by Jeribe and Euphrates formations as main reservoirs and Dhiban formation as secondary reservoir that represent an attractive petroleum completion target in Hamrin oil field

Summary

Introduction

Hamrin oil field is one of the important oil fields in northern Iraq.The field represent an asymmetrical anticline that extend NW-SE for more than 101 km, with width (4-7 km) width (Figure 1) [1]. Hamrin oil field located at the south western boundary of the foot hill zone of the unstable shelf area according to the tectonic division of Iraq [2]. The tertiary reservoir in Hamrin represented by two main formations, Jeribe and Euphrates formation and one secondary is Dhiban formation. These formations belong to latest Eocene-Recent Megasequence, AP11 of the tectonic history of Iraq, this mega sequence is associated with the closure of Neo-Tethyan basin along N and E sides of the Arabian plate, and opening of the Gulf of Aden and Red sea on the S and W of the plate [2]. The two main elements of the petroleum system of this area, the reservoir units represented by Jeribe, Euphrates formations and the cap rock that sealing the reservoirs units represented by Fatha formation were deposited during this mega sequence

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Conclusion