Reservoir Properties of the Upper Oligocene-Lower Miocene Ibrahim Formation in the Garmian Area, Iraqi Kurdistan Region
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Abstract
Reservoir characteristics of the Upper Oligocene-Lower Miocene Ibrahim Formation has been studied from the well Hasira-1 (H-1) at Sarqala Oilfield and from the well Taza-3 (Tz-3) at Taza Oilfield in Garmian Area/ southeast Kirkuk City in the Iraqi Kurdistan Region. The available conventional wireline log data are used for detecting the dominant lithology of the formation which appeared to be limestone and argillaceous limestone. The formation in the well H-1 contains appreciable quantity of shale which in some horizons exceeded 35%. The formation is of poor porosity (5% and 8% as average porosity in the well H-1 and Tz-3 respectively) and of poor to fair permeability with an average of 1.9mD in the well H-1. The formation divided to five reservoir units depending on variations in the shale content, porosity and permeability in the well H-1. RU-2 and RU-4 at depth intervals 4125-4128m and 4109-4114m respectively are of relatively the highest reservoir quality among the five recognized reservoir units in the formation. Light hydrocarbons are exist along the Ibrahim Formation in the well H-1 with no effective movability for to be recovered. The examined 17 core samples of the formation in the well Taza-3 is lithologically composed of argillaceous and marly limestone which represented by planktonic foraminifera bearing packstone microfacies. The average porosity of the tested core plug samples of the formation in the well Tz-3 is about 5%, so the formation in this well is of poor reservoir quality as it is in the well H-1.
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References
[1] Bellen, R.C., Dunnington, H.V., Wetzel, R. and Morton, D.M. (1959). Lexique Stratigraphique International. National de la recherché scientifique, 13, quai, Anatole-France, Paris: VII, 333p.
[2] Sadooni, F.N. and Alsharhan, A.S. (2019). Regional stratigraphy, facies distribution, and hydrocarbons potential of the Oligocene strata across the Arabian Plate and Western Iran. Carbonates and Evaporites, 34:1757–1770.
[3] Al-Qayim, B.A. and Khaiwka, M.H. (1980). Depositional environment and diagenesis of the Oligocene reef cycles, Kirkuk Oil field, Northern Iraq. Modern Geology, 7(3): 177-190
[4] Youhanna. A.K. (1983). Biostratigraphy of some Tertiary and Cretaceous formations. Khleissia well no. 1, Northwest Iraq. (Unpublished Report), INOC, Geological Labs, Baghdad, 30 p.
[5] Al-Eisa, M.E. (1992). The two subdepositional cycles of the early Miocene in Kirkuk Oilfield area, North Iraq. Journal of Geological Society of Iraq. 25(1): 41-58.
[6] Al-Banna, N.Y. (2008). Oligocene / Miocene boundary in northern Iraq. GeoArabia. 13(2): 187-190.
[7] Al-Banna, N.Y., Amin, M.A. and Al-Hashimi, W.S. (2002). Oligocene-Miocene Boundary in Sheikh Ibrahim and Sasan areas, northwest Iraq. Iraqi Journal of Earth Science. 2 (2): 37-47.
[8] Final Report of Sarqala -1 (2011). WesternZagros Oil Company.
[9] WesternZagros (2012). http://www.westernzagros.com/documents/2012FebWZR CorporatePresentation.pdf
[10] Pitman, J.K., Steinshouer, D. and Lewan, M.D. (2004). Petroleum generation and migration in the Mesopotamian Basin and Zagros Fold Belt of Iraq, results from a basin-modeling study: GeoArabia, Gulf PetroLink, Bahrain. 9(4): 41-72.
[11] Aqrawi, A.A.M. (1998). Paleozoic stratigraphy and petroleum systems of the western and southwestern deserts of Iraq. GeoArabia. 3(2): 229-247.
[12] Baban, D.H. and Ranyayi, K.S.M. (2012). Potentiality of Paleocene source rocks and their contribution in generating the accumulated oil in the Eocene Pila Spi Reservoir in Taq Taq Oil Field, Kurdistan Region, Iraq. Arabian Journal of Geosciences. 6:4225–4237.
[13] Baban, D.H. (2013). Sedimentary organic matter and source rock potential of the Paleocene Aaliji Formation in Qumar Oil Field, NE Iraq. Arabian Journal of Geosciences. 7: 4733–4744.
[14] Jassim, S.Z. and Goff, T. (2006). Phanerozoic development of the northern Arabian Plate, In: Jassim S.Z., Goff, J. C., Geology of Iraq, publication of Dolin, Prague and Moravian Museum, Brno: 341p.
[15] Bockel-rebella, M.O., Temps, J.M., Xavier, J.P and Flament, J.M. (1998). Zagros structural study for deep petroleum traps investigation. Iraqi Geological Journal. 31(2):52-68.
[16] Ibrahim, A.S. (2009). Tectonic Style and Evolution of the NW Segment of the Zagros Fold Thrust Belt, Sulaimani Governorate, Kurdistan Region NE Iraq. PhD Thesis, Sulaimani University, Iraq: 187p.
[17] Final Report of Hasira-1 (2014). Vol. 1. WesternZagros Oil Company.
[18] WesternZagros. (2014). Top Jeribe Formation Depth Structural Map.
[19] Oil Search (2014). https://www.oilsearch.com/__data/assets/pdf_file/0018/2295/1406-UBS-presentation-0c493aac-f5e6-4f91-94a0-4985ebede7e3-0.pdf
[20] Jassim, S.Z. and Buday, T. (2006). Latest Eocene – Recent Megasequence AP11 (Ch.14). In: Jassim S.Z., Goff, J. C., Geology of Iraq, publication of Dolin, Prague and Moravian Museum, Brno: 341p.
[21] Al-Hashimi, H.A.J. and Amir, R.M. (1986). Restudy of the Ibrahim Formation in the type section, Ibrahim well no.1, Mosul area, N. Iraq. Journal of the Geological Society of Iraq. 19(3):93-100.
[22] Aqrawi, A.A.M., Goff, J.C, Horbury, A.D., and Sadooni, F.N. (2010). The petroleum geology of Iraq. Scientific Press Ltd, Beaconsfield, UK: 424 p.
[23] Abdulrahman, A. and Awadh, S.M. (2021). Depositional Environment of the Ibrahim Formation and Determining the Oligocene-Early Miocene Boundary in Eastern Iraq. Iraqi Geological Journal. 54(1F):85-97.
[24] Larionov, W.W. (1969). Borehole Radiometry: Nedra, Moscow, U.S.S.R.
[25] Dewan, J. (1983). Essentials of Modern Open-Hole Log Interpretation: PennWell Publishing Company, Tulsa, Oklahoma: 361p.
[26] Schlumberger (1986). Log Interpretation Charts, Schlumberger publication. 122p.
[27] Ghorab, M., Ramadan, A.M., and Nouh, A.Z. (2008). The relation between shale origin (source or nonsource) and its type for Abu Roash formation at Wadi-El Naturn area, south of Western Desert, Egypt. Australian Journal of Basic Applied Sciences, 2(3): 360-371.
[28] North, F. K. (1985). Petroleum Geology, Allen and Unwin Inc. London. 607p.
[29] Wyllie, M. R. J. and Rose, W. D. (1950). Some theoretical considerations related to the quantitative evaluations of the physical characteristics of reservoir rock from electric log data: Journal of Petroleum Technology. 189: 105–110.
[30] Asquith, G. B. and Gibson, C. R. (1982) Basic Well Analysis for Geologist, American Association of Petroleum Geologists, Tusla, Oklahoma .USA.
[31] Asquith, G. and Krygowski, D. (2004). Chapter 7: Log interpretation. In: Asquith, G., and Krygowski, D. (eds.), Basic Well Log Analysis, (Second edition). AAPG Methods in exploration 16, Tulsa, Oklahoma: 37-76.
[32] Schlumberger (2009). Log Interpretation Charts, Sugar Land, Texas, U.S.A. 293p.
[33] Oil Search (2015). Report no. R1503. Horizontal plug. 2p.