Geological model of Hartha formation in Majnoon oilfield, southern Iraq

Joint Authors

Awn, Ghid C. Abd
al-Mahdi, Thamir A.

Source

Iraqi Geological Journal

Issue

Vol. 53, Issue 1A (30 Jun. 2020), pp.48-57, 10 p.

Publisher

Iraq Geologist Union

Publication Date

2020-06-30

Country of Publication

Iraq

No. of Pages

10

Main Topic

Engineering Sciences and Information Technology

Abstract EN

This study aims to construct a 2D geological model for Hartha Formation in Majnoon oil field based on well logs data from eight wells (Mj-1, Mj-3, Mj-10, Mj-11, Mj-15, Mj-16, Mj-20 and Mj-33), core and cutting samples. Petrophysical properties (effective porosity and water saturation) are derived from CPI interpretation of well logs while facies associations are interpreted through the study of microfacies analysis of thin sections for core and cutting samples. By using RockWorks16 software, 2D facies and petrophysical model are built to estimate the vertical and lateral variation of these properties. The 2D facies models display the dominance of outer ramp facies in the lower part of Hartha Formation, whereas mid-ramp, shoal, and inner ramp facies associations occupy the upper part. The shoal facies has a wide and continuous extent, which is characterized by high effective porosity and low water saturation. Therefore, it represents the most important reservoir of Hartha Formation in Majnoon oilfield. Other facies have less reservoir quality due to low porosity and high water saturation. Besides, their occurrence in deeper structural depths. Based on the output of the 2D effective porosity model, the porosity increased upward the succession of Hartha Formation as a result of the transition from outer ramp to shoal or inner ramp facies. Accordingly, the water saturation model shows low values at upper parts of the anticline structure of Majnoon oil field, which indicates high hydrocarbon saturation at the upper parts of Hartha Formation

American Psychological Association (APA)

Awn, Ghid C. Abd& al-Mahdi, Thamir A.. 2020. Geological model of Hartha formation in Majnoon oilfield, southern Iraq. Iraqi Geological Journal،Vol. 53, no. 1A, pp.48-57.
https://search.emarefa.net/detail/BIM-949914

Modern Language Association (MLA)

Awn, Ghid C. Abd& al-Mahdi, Thamir A.. Geological model of Hartha formation in Majnoon oilfield, southern Iraq. Iraqi Geological Journal Vol. 53, no. 1A (2020), pp.48-57.
https://search.emarefa.net/detail/BIM-949914

American Medical Association (AMA)

Awn, Ghid C. Abd& al-Mahdi, Thamir A.. Geological model of Hartha formation in Majnoon oilfield, southern Iraq. Iraqi Geological Journal. 2020. Vol. 53, no. 1A, pp.48-57.
https://search.emarefa.net/detail/BIM-949914

Data Type

Journal Articles

Language

English

Notes

Includes bibliographical references : p. 56-57

Record ID

BIM-949914