Microfacies and depositional environment of mishrif formation, north Rumailaoilfielfd, southern Iraq
Joint Authors
al-Ali, Muslim M.
Alali, Rasha A.
Mahdi, Mahir Mandil
Source
Issue
Vol. 52, Issue 2 (31 Dec. 2019), pp.91-104, 14 p.
Publisher
Publication Date
2019-12-31
Country of Publication
Iraq
No. of Pages
14
Main Subjects
Earth Sciences, Water and Environment
Abstract EN
Mishrif Formation is one of the main oil reservoirs in southern Iraq.
This study analyzes the microfacies and depositional environment for Mishrif Formation in North Rumaila oilfield.
The study was based on the analysis of 17 wells core.
The Mishrif Formation represents deposition in a carbonate platform ramp system, with scattered patch reefs and shoals developed across the ramp margin and the platform top.
It is characterized by skeletal grains (bioclasts) which are dominated such as foraminifera, rudist, calcareous Algae and other skeletal grains included mollusks shell fragments with Chondrodonta sometimes, and Echinoderms while non-skeletal grains are less abundant which are represented by Peloids and Ooids.
According to the petrography analysis of Mishrif Formation, the fossils are dominated in the formation, four groups of these fossils are diagnosed, and these are Oligosteginid, Alveolinids, Dicyclina and Miliolids.
Can be identified and build the sedimentary model with microfacies which apply to the Mishrif Formation.
The sedimentological and stratigraphic analysis of Mishrif Formation core led to identification of 16 facies association, seven of which are found in the mB unit (lower part of the Formation) whereas they are deposited in outer ramp, mid ramp, ramp margin and lagoon, while nine in the mA unit (upper part of the formation) which are deposited in intraplate basin, mid ramp, inner ramp, ramp margin and lagoonal supra tidal.
American Psychological Association (APA)
al-Ali, Muslim M.& Mahdi, Mahir Mandil& Alali, Rasha A.. 2019. Microfacies and depositional environment of mishrif formation, north Rumailaoilfielfd, southern Iraq. Iraqi Geological Journal،Vol. 52, no. 2, pp.91-104.
https://search.emarefa.net/detail/BIM-954740
Modern Language Association (MLA)
al-Ali, Muslim M.…[et al.]. Microfacies and depositional environment of mishrif formation, north Rumailaoilfielfd, southern Iraq. Iraqi Geological Journal Vol. 52, no. 2 (2019), pp.91-104.
https://search.emarefa.net/detail/BIM-954740
American Medical Association (AMA)
al-Ali, Muslim M.& Mahdi, Mahir Mandil& Alali, Rasha A.. Microfacies and depositional environment of mishrif formation, north Rumailaoilfielfd, southern Iraq. Iraqi Geological Journal. 2019. Vol. 52, no. 2, pp.91-104.
https://search.emarefa.net/detail/BIM-954740
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 104
Record ID
BIM-954740