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Facies architecture and diagenetic features development of albian-early turonian succession in luhais oil field, Southern Iraq
Other Title(s)
البنية السحنية و تطور المظاهر التحويرية لتتابع الأبين-التوروني المتقدم في حقل اللحيس النفطي جنوب العراق
Joint Authors
Abid, Nur Jawad
al-Shaykhali, Sad Sami Jasim
al-Zaydi, Iyad Ali Husayn
Source
Issue
Vol. 56, Issue 3B (30 Sep. 2015), pp.2308-2320, 13 p.
Publisher
University of Baghdad College of Science
Publication Date
2015-09-30
Country of Publication
Iraq
No. of Pages
13
Main Subjects
Earth Sciences, Water and Environment
Materials Science , Minerals
Topics
Abstract AR
أن التتابع ألفتاتي_الكاربوني الذي يتألف من تكويني نهر عمر و مودود يمثل جزء من دورة الالبين_التوروني المتقدم (مجموعة وسيعة) أما الدراسة الحالية تتضمن دراسة طبوغرافية و تحليل سحنات و بيئة رسوبية و تطور العمليات التحويرية و دراسة الخواص المكمنية لسبعة أبار نفطية (2, 4, 5, 8, 13, 14, 39) في حقل اللحيس النفطي في جنوب العراق.
تم تمييز ستة أنواع من السحنات الصخرية في تكوين مودود :- (Orbitolina- Milliolids wackestone to packstone Orbitolina wackestone to packstone, miliolids wackestone, Peloidal wackestone to packstone, Ooides to Peloids grainstone and bioclastic Wackestone-Packstone).
و هذه السحنات تمثل الترسبات في ثلاث بيئات ترسيبية : البحر المفتوح الضحل و شبه الضحل المحجوز و بيئة الحاجز الرملي K بينما يتميز تكوين نهر عمر بستة سحنات صخرية :- Bedded (Mudstone Lithofacies, Siltstone-Claystone Lithofacies, Lenticular Sandstone-Mudstone Lithofacies and Falser Bedded Mudstone-Sandstone Lithofacies).
حيث تمثل هذه السحنات الترسيب في بيئة القناة الفعالة و ترسبات ملئ القناة و مقدمة الدلتا و واجهة الساحل.
فإن الخواص التحويرية الأكثر شيوعا في التتابع المدروس هي المكرتة و السمنتة و الإذابة و الدلمتة و التراص.
و الأكثر تأثيرا هي السمنتة و الإذابة و الدلمتة و التي تؤثر بشكل مباشر و واضح في الخواص البتروفيزياوية للتتابع المدرس.
Abstract EN
Clastic-carbonate succession which including the Nahr Umr and Mauddud Formations are represented a part of Albian-Early Turonian Sequence (Wasi`a Group).
The present study includes Petrography, microfacies analysis, depositional environment, digenetic development, and reservoir characterization for seven boreholes (Lu-2, Lu-4, Lu-5, Lu-8, Lu-13, Lu-14 and Lu-39) within Luhais Oil field South Iraq.
There are six type of carbonate microfacies were recognized in the Mauddud Formation:- Orbitolina - Milliolids wackestone to packstone Orbitolina wackestone to packstone, miliolids wackestone, Peloidal wackestone to packstone, Ooides to Peloids grainstone and bioclastic Wackestone - Packstone.
These microfacies are represented three depositional environments: restricted shallow marine environment, semi-restricted shallow marine environment and Shoal environments.
While the Nahr Umr Formation characterized by six lithofacies; Lithofacies I (Mudstone), Lithofacies II (Siltstone - Claystone), Lithofacies III (Lenticular Bedded Sandstone-Mudstone), Lithofacies IV (Falser Bedded Mudstone - Sandstone), Lithofacies V (Parallel Lamination Sandstone - Siltstone) and Lithofacies VI (Well sorted sandstone).
These lithofacies are suggested four depositional environment of Nahr Umr Formation: Active channel environment, channel fill environment, delta plain environment and delta front and shore face environment.
The most common diagenetic features observed and distribution in the studied sections includes Micritization, Cementation, Leaching (dissolution), dolomitization and Compaction fabrics.
The most effective diagenetic processes were cementation, dissolution and dolomitization processes which have direct affect upon the study sections.
The Nahr Umr and Mauddud sequence can be divided by the gamma ray and shale value into three zones (A, B and C); therefore we have interpretation of the logs porosity and porosity evaluation according to these divisions.
American Psychological Association (APA)
Abid, Nur Jawad& al-Shaykhali, Sad Sami Jasim& al-Zaydi, Iyad Ali Husayn. 2015. Facies architecture and diagenetic features development of albian-early turonian succession in luhais oil field, Southern Iraq. Iraqi Journal of Science،Vol. 56, no. 3B, pp.2308-2320.
https://search.emarefa.net/detail/BIM-645330
Modern Language Association (MLA)
Abid, Nur Jawad…[et al.]. Facies architecture and diagenetic features development of albian-early turonian succession in luhais oil field, Southern Iraq. Iraqi Journal of Science Vol. 56, no. 3B (2015), pp.2308-2320.
https://search.emarefa.net/detail/BIM-645330
American Medical Association (AMA)
Abid, Nur Jawad& al-Shaykhali, Sad Sami Jasim& al-Zaydi, Iyad Ali Husayn. Facies architecture and diagenetic features development of albian-early turonian succession in luhais oil field, Southern Iraq. Iraqi Journal of Science. 2015. Vol. 56, no. 3B, pp.2308-2320.
https://search.emarefa.net/detail/BIM-645330
Data Type
Journal Articles
Language
English
Notes
Text in English ; abstracts in English and Arabic.
Record ID
BIM-645330