Donnish Journal of Geology and Mining Research

May 2018 Vol. 4(1), pp. 001-010

Copyright 2018 Donnish Journals

Original Research Paper

Sedimentology and Petrophysical Study of Neogene Successions in Jambur Oilfield, Kirkuk, North Iraq

Sawsan H. Al-Hazaa1*, Aboosh, H, Al-Hadidy2 and Azhar Zaidan1

1Applied Geology Department, College of Sciences, Tikrit University, Iraq.
2Northern Oil Company, Kirkuk, Iraq.

Corresponding Author's E-mail:

Accepted 18th April, 2018.


The carbonate and evaporate succession under study includes; basal anhydrite of Aquitanian cycle, Serikagni, Euphrates and Dhiban formations (Burdigalian) and Jeribe Formation of Langhian age. Porosity is calculated from density, neutron and sonic logs while cross diagram, M-N and FDC-CNL and traditional microscopic investigation are used to identify petrography and facies analysis. Porosity generally is weak in the basal anhydrite unit due to nonporous anhydrite composition. Serikagni Formation is divided into two units; these are S1, that represents the upper part of the formation with 10-15 m thick and is considered as non-reservoir unit due to less porosity, and S2, that represents the lower part with 10-30 m thick, which is composed of dolomite and limestone including less muddy materials than the upper part. This unit has (0.05-0.11) porosity as weak-moderate. The Euphrates Formation is divided into two porosity units; EU1 for the upper part with 20-60 m thick and with moderate to very good porosity with values ranging from 0.15 to 0.33. It is also considered as one of the best hydrocarbon reservoir units in the field due to less muddy content and good permeability. EU2 unit consists generally of hard argillaceous and dolomitic limestone with 10-50 m thick and moderate to very good porosity. The maximum porosity content reaches (0.29) in Ja-62 well. Dhiban Formation consists of anhydrite beds with weak porosity. Finally, two porosity units are recognized in the Jeribe formation; the first unit has weak-moderate porosity while the second has good to very good porosity.

Keywords: Porosity units, petrography, Aquitanian-Langhian, Jampur oilfield, Iraq.

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Sawsan H. Al-Hazaa, Aboosh, H, Al-Hadidy and Azhar Zaidan. Sedimentology and Petrophysical Study of Neogene Successions in Jambur Oilfield, Kirkuk, North Iraq. Donnish Journal of Geology and Mining Research 4(1) 2018 pp. 001-010.

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