Reservoir heterogeneity, sedimentology, and diagenesis of ordovician bedinan formation, southern diyarbakir basin, se turkey: paleogeographic implications

Download

index.pdf

Date

2019

Author

Yıldız, Gökay.

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

217
views

137
downloads

Recent high-quality oil discoveries in SE Turkey, specifically Diyarbakır Basin from the Ordovician aged Bedinan Formation sandstone reservoir levels have introduced many questions. The fact that variable hydrocarbon production rates in the studied wells oblige us to delineate internal framework of the sandstone levels and to find the answer for the reason of the reservoir heterogeneity which will be a proxy to find convenient well stimulation methods in order to increase hydrocarbon recovery. In this study, Gazzi-Dickinson method of point counting on thin sections, X-ray computed tomography imaging technique, semi-quantitative X-ray diffraction (XRD) bulk powder mineral analysis, seismic lines, wireline log data, and available well data were used to understand the depositional environment, the paleogeography during the geological evaluation, the mineral framework and the provenance of the levels of interest. Additionally, petrophysical log interpretation via Petrel software together with regional stratigraphy and correlation studies were carried out to explain the reason and scale of the reservoir heterogeneity. As a consequence of the studies, it is seen that the subarkose to quartz arenitic sandstone levels of the Bedinan Formation were deposited between the lower and vi upper shoreface of an ice-distal glaciomarine depositional environment. Additionally, the origin of sandstones are related to igneous and cratonic sources. The most important result of this study on the reservoir heterogeneity of this sandstone levels of uppermost Bedinan Formation is that besides the depositional facies, structural features and compaction, particularly diagenetic clay coating minerals (illite, kaolinite and illite/smectite mixed clay layer) together with quartz and carbonate cements have exerted great control on the reservoir quality in meters scale, which results in variable hydrocarbon production rate.

Subject Keywords

Reservoirs., Reservoir Heterogeneity, Eodiagenesis, Mesodiagenesis, Diyarbakır Basin, Illitization, Mixed Clay Layer.

URI

http://etd.lib.metu.edu.tr/upload/12623251/index.pdf
https://hdl.handle.net/11511/43426

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

Reservoir heterogeneity of Ordovician sandstone reservoir (Bedinan Formation, SE Turkey): Diagenetic and sedimentological approachs Yildiz, Gokay; Yılmaz, İsmail Ömer (Elsevier BV, 2020-08-01) The sandstone-bearing reservoir levels (Bedinan Formation) in the Diyarbakir Basin, SE Turkey show strong heterogeneity in porosity, permeability and capillary pressure, which influences oil production rates of the studied 6 wells and beclouds the prediction of hydrocarbon reserves. Therefore, comprehensive understanding of the sandstone reservoir characteristics has been necessitated to optimize its ultimate hydrocarbon recovery, maximize its lifetime and to make more accurate performance predictions for t...
Hydrogeological and hydrochemical investigation for below-sea-level quarrying at cement raw material site (Kocaeli-Darica, Turkey) Doyuran, Vedat; Karahanoğlu, Nurkan; Çamur, Mehmet Zeki; Topal, Tamer; Süzen, Mehmet Lütfi; Yesilnacar, Ertan (Informa UK Limited, 2003-01-01) A research has been carried Out to investigate the effects of below sea level mining on the cement raw material quality of a limestone quarry located adjacent to the shoreline near Darica-Kocaeli-Turkey. Field studies involved rock mass characterization through discontinuity surveys performed at the working benches of the quarry as well as on the core samples, monitoring of groundwater levels, performance of water pressure tests, and in-situ hydrochemical measurements. Hydrogeological data suggest that the ...
Characterization of the Karababa-C reservoir in the South Karakus oilfield, southeast Turkey Ulu, M; Karahanoğlu, Nurkan (1998-12-01) The South Karakus oil field is located in southeast Turkey, and produces, from the Late Cretaceous Mardin Group, carbonate reservoirs consisting of the Karababa, Derdere, Sabunsuyu and Areban Formations. The Karababa Formation is divided into three members, of which the productive Karababa-C member, discussed here, is composed of shallow marine bioclastic mudstone to wackestone. It is affected by early to late diagenetic processes that caused modification of the original pore system by cementation, dissolut...
Age and paleoenvironmental reconstruction of partially remagnetized lacustrine sedimentary rocks (Oligocene Aktoprak basin, central Anatolia, Turkey) Meijers, Maud M; Strauss, Becky E.; ÖZKAPTAN, MURAT; Feinberg, JM; Mulch, Andreas; Whitney, Donna; Kaymakcı, Nuretdin (2016-03-01) The age and paleoenvironmental record of lacustrine deposits in the Aktoprak basin of south-central Turkey provides information about the evolution of topography, including the timing of development of an orographic rain shadow caused by uplift of the mountain ranges fringing the Central Anatolian Plateau. New magnetostratigraphy-based age estimates, in combination with existing biostratigraphic ages, suggest that the partially remagnetized Kurtulmu Tepe section of the basin is Chattian (Upper Oligocene). T...
Continuous resistivity profiling survey in Mersin Harbour, Northeastern Mediterranean Sea OKYAR, Mahmut; YILMAZ, Sedat; Tezcan, Devrim; Cavas, Hakan (2013-06-01) No detailed information has previously been available on the geological and geophysical characteristics of the sea floor and the underlying strata of Mersin Harbour, Northeastern Mediterranean Sea (Turkey). Continuous resistivity profiling (CRP) and borehole data from Mersin Harbour were used to interpret geoelectric stratigraphy of Neogene-Quaternary sediments in the area. This represents one of few such detailed case studies that have applied these valuable CRP techniques for the purpose of marine stratig...

Citation Formats

G. Yıldız, “Reservoir heterogeneity, sedimentology, and diagenesis of ordovician bedinan formation, southern diyarbakir basin, se turkey: paleogeographic implications,” Thesis (M.S.) -- Graduate School of Natural and Applied Sciences. Geological Engineering., Middle East Technical University, 2019.