Late Cretaceous Foraminiferal Biozonation in Selected Wells of Nasiriya Oilfield, Southern Iraq
Mishrif Formation is considered as very important Cretaceous reserves, previously its petrophysical characterization and diagenetic operations are the most common studies by many authors. This study focused on the biozonation and age determination of the formation in three selected subsurface secti...
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| Format: | Article |
| Language: | English |
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College of science, university of Diyala
2025-01-01
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| Series: | Academic Science Journal |
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| Online Access: | https://acadscij.uodiyala.edu.iq/index.php/Home/article/view/236 |
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| author | Salah Hussain Methaq Y. Tulub |
| author_facet | Salah Hussain Methaq Y. Tulub |
| author_sort | Salah Hussain |
| collection | DOAJ |
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Mishrif Formation is considered as very important Cretaceous reserves, previously its petrophysical characterization and diagenetic operations are the most common studies by many authors. This study focused on the biozonation and age determination of the formation in three selected subsurface sections of Nasiriya Oilfield which situated in Thi Qar Governorate, South of Iraq. The results show that in these two sections, only on benthic foraminifera biozone was discriminated which is: Nezzazata simplex-Nezzazata conica Interval Biozone, dated as Middle-Late Cenomanian (early Late Cretaceous), which indicates the highest occurrence of two successive taxa. The thickness of this biozone is 42 meter in well NS-7 and the lithology is brown-light brown, slightly hard, fine - medium crystalline limestone, and in parts compact white, moderately hard, fine crystalline limestone, and in well NS-8 the lithology is, brown to light brown, slightly hard, medium crystalline, porous, vuggy limestone, the thickness is 36.9 meter. However, NS-4 is fossil baren.
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| format | Article |
| id | doaj-art-cbde24dfe8504b4abb4baf2a9a665281 |
| institution | Kabale University |
| issn | 2958-4612 2959-5568 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | College of science, university of Diyala |
| record_format | Article |
| series | Academic Science Journal |
| spelling | doaj-art-cbde24dfe8504b4abb4baf2a9a6652812025-02-12T05:04:32ZengCollege of science, university of DiyalaAcademic Science Journal2958-46122959-55682025-01-013110.24237/ASJ.03.01.825BLate Cretaceous Foraminiferal Biozonation in Selected Wells of Nasiriya Oilfield, Southern IraqSalah Hussain0Methaq Y. Tulub1Department of Petroleum Geology and Minerals, College of Science, University of Diyaladiyala university Mishrif Formation is considered as very important Cretaceous reserves, previously its petrophysical characterization and diagenetic operations are the most common studies by many authors. This study focused on the biozonation and age determination of the formation in three selected subsurface sections of Nasiriya Oilfield which situated in Thi Qar Governorate, South of Iraq. The results show that in these two sections, only on benthic foraminifera biozone was discriminated which is: Nezzazata simplex-Nezzazata conica Interval Biozone, dated as Middle-Late Cenomanian (early Late Cretaceous), which indicates the highest occurrence of two successive taxa. The thickness of this biozone is 42 meter in well NS-7 and the lithology is brown-light brown, slightly hard, fine - medium crystalline limestone, and in parts compact white, moderately hard, fine crystalline limestone, and in well NS-8 the lithology is, brown to light brown, slightly hard, medium crystalline, porous, vuggy limestone, the thickness is 36.9 meter. However, NS-4 is fossil baren. https://acadscij.uodiyala.edu.iq/index.php/Home/article/view/236biozone, Benthic foraminifera, Mishrif, Cenomanian, Nasiriya Oilfield, Southern Iraq. |
| spellingShingle | Salah Hussain Methaq Y. Tulub Late Cretaceous Foraminiferal Biozonation in Selected Wells of Nasiriya Oilfield, Southern Iraq Academic Science Journal biozone, Benthic foraminifera, Mishrif, Cenomanian, Nasiriya Oilfield, Southern Iraq. |
| title | Late Cretaceous Foraminiferal Biozonation in Selected Wells of Nasiriya Oilfield, Southern Iraq |
| title_full | Late Cretaceous Foraminiferal Biozonation in Selected Wells of Nasiriya Oilfield, Southern Iraq |
| title_fullStr | Late Cretaceous Foraminiferal Biozonation in Selected Wells of Nasiriya Oilfield, Southern Iraq |
| title_full_unstemmed | Late Cretaceous Foraminiferal Biozonation in Selected Wells of Nasiriya Oilfield, Southern Iraq |
| title_short | Late Cretaceous Foraminiferal Biozonation in Selected Wells of Nasiriya Oilfield, Southern Iraq |
| title_sort | late cretaceous foraminiferal biozonation in selected wells of nasiriya oilfield southern iraq |
| topic | biozone, Benthic foraminifera, Mishrif, Cenomanian, Nasiriya Oilfield, Southern Iraq. |
| url | https://acadscij.uodiyala.edu.iq/index.php/Home/article/view/236 |
| work_keys_str_mv | AT salahhussain latecretaceousforaminiferalbiozonationinselectedwellsofnasiriyaoilfieldsoutherniraq AT methaqytulub latecretaceousforaminiferalbiozonationinselectedwellsofnasiriyaoilfieldsoutherniraq |