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Department of Petroleum and Natural Gas Engineering, Article

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Kök, Mustafa Verşan (196)
Akın, Serhat (62)
Parlaktuna, Mahmut (23)
Gumrah, F (18)
Sınayuç, Çağlar (18)

Fuel Technology (133)
Energy Engineering and Power Technology (110)
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Geotechnical Engineering and Engineering Geology (42)
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Recent Submissions

Effect of inlet pressure on crude oil combustion -laboratory approach-
Kök, Mustafa Verşan; Varfolomeev, Mikhail A.; Nurgaliev, Danis K. (Elsevier BV, 2021-03-01)
In this research, the effect of inlet pressure on combustion behavior of medium and light crude oils was analyzed with TGA and DSC experiments. The ramped temperature combustion experiments were performed at constant heati...
Experimental and numerical study of flow and thermal transport in fractured rock
Tavakkoli Osgouei, Yashar; Akın, Serhat (Springer Science and Business Media LLC, 2021-01-01)
An experimental and numerical study was carried out to investigate matrix-fracture thermal transport in fractured rock. Two different synthetically fractured core plugs were used during the flow-through experiments while c...
The Effect of Experimental Conditions on Methane (95%)-Propane (5%) Hydrate Formation
Longinos, Sotirios Nik; Parlaktuna, Mahmut (MDPI AG, 2020-12-01)
In the present study, the effect of different kinds of impellers with different baffles or no baffle was investigated. Up-pumping pitched blade turbine (PBTU) and Rushton turbine (RT) were the two types of impellers tested...
A proxy model for determining reservoir pressure and temperature for geothermal wells
Aydin, Hakki; Akın, Serhat; Senturk, Erdinc (Elsevier BV, 2020-11-01)
Estimating reservoir pressure and temperature is one of the challenges of geothermal reservoir engineering. A new proxy model has been developed to estimate reservoir pressure and temperature using wellhead pressure, tempe...
Extending Voronoi-diagram based modeling of oil slick spreading to surface tension-viscous spreading regime
Durgut, İsmail; Erdoğan, Metehan; Reed, Mark (Elsevier BV, 2020-11-01)
An earlier paper demonstrated a methodology for modeling the spreading process with a Gaussian random walk procedure, but was limited to the gravity-viscous spreading regime. Here we extend the methodology of re-presenting...
Combustion mechanism and model free kinetics of different origin coal samples: Thermal analysis approach
Jayaraman, Kandasamy; Kök, Mustafa Verşan; Gokalp, Iskender (Elsevier BV, 2020-08-01)
Five coal samples from different origins are characterized for their pyrolysis and combustion features using coupled thermogravimetry - mass spectrometry (TG-MS). The samples are heated at temperatures ranging from 25 to 9...
Low-temperature oxidation reactions of crude oils using TGA-DSC techniques
Kök, Mustafa Verşan; Varfolomeev, Mikhail A.; Nurgaliev, Danis K. (Springer Science and Business Media LLC, 2020-07-01)
In this research, combustion behaviour of three crude oils with different degrees API gravities was analysed. The thermogravimetric analyser (TGA) and differential scanning calorimeter (DSC) experiments were performed usin...
Gasification kinetics of Thrace region coal by thermogravimetry analysis
Kök, Mustafa Verşan; Yildirim, Betul (Elsevier BV, 2020-05-01)
This study aimed at understanding the gasification kinetics of Thrace region coal samples performing isothermal carbon dioxide gasification experiments at five different temperatures (750, 825, 850, 900, 950 degrees C). Th...
The effect of water on combustion behavior of crude oils
Kök, Mustafa Verşan; Varfolomeev, Mikhail A.; Nurgaliev, Danis K. (Elsevier BV, 2020-03-01)
The ramped temperature oxidation experiments were performed on heavy and light crude oil samples using the TGA and DSC instruments. The crude oils were mixed with different weight percentages (10%, 20%, and 30%) of water, ...
An approach for the performance-impact of parent-child wellbores spacing and hydraulic fractures cluster spacing in conventional and unconventional reservoirs
Al-Rbeawi, Salam (Elsevier BV, 2020-02-01)
The objective of this paper is focusing deep insights on the impacts of the spacing between parent and child wellbores and between hydraulic fractures on the performance of conventional and unconventional reservoirs. The t...
Polymer gel conformance on oil recovery in fractured medium: Visualization and verification
Canbolat, Serhat; Parlaktuna, Mahmut (Elsevier BV, 2019-11-01)
Due to complexity and heterogeneity of the geological patterns of fractured reservoirs recovery estimations are considered to be extremely challenging. These fractures form complicated paths for reservoir characterization ...
Effects of silica nanoparticles on the performance of water-based drilling fluids
Kök, Mustafa Verşan; Bal, Berk (2019-09-01)
In this research, two groups of experiments were conducted to investigate the effects of silica (SiO2) nanoparticles on the filtration and rheological properties of water-based drilling fluids. In the first group, bentonit...
Determination of SARA fractions of crude oils by NMR technique
Kök, Mustafa Verşan; Varfolomeev, Mikhail A.; Nurgaliev, Danis K. (Elsevier BV, 2019-08-01)
In this research, four different crude oils from Tatarstan oil fields with wide range of API gravities (from 16.6 to 32.5 degrees API) were used for hydrogen and carbon nuclear magnetic resonance spectroscopy (H NMR and C ...
Random walk particle-tracking method for modeling changes of sediment characteristics in marine sediments after drilling discharges
Özdemir, Rabia Tuğçe; Durgut, İsmail; Reed, Mark (Elsevier BV, 2019-08-01)
Adverse impacts of drilling discharges on marine benthic environments have been observed since the advent of offshore drilling operations for exploration and production of oil and gas. This study utilizes a marine sediment...
Improving Oil-Rate Estimate in Capacitance/Resistance Modeling Using the Y-Function Method for Reservoirs Under Waterflood
Temizel, Cenk; Artun, Emre; Yang, Zhengming (Society of Petroleum Engineers (SPE), 2019-08-01)
Capacitance/resistance modeling (CRM) is an empirical waterflood modeling technique based on the signal correlations between injection rates and gross production rates. CRM can satisfactorily estimate the gross (liquid) pr...
Geothermal re-injection performance evaluation using surveillance analysis methods
Akın, Serhat (2019-08-01)
Re-injection, the key factor in the success or failure of a geothermal field, is an integral part of any geothermal field development. Modified Hall integral - derivative plot and Hearn plot are analytical injection survei...
Thermal characterization of crude oils by pressurized differential scanning calorimeter (PDSC)
Kök, Mustafa Verşan; Varfolomeev, Mikhail A.; Nurgaliev, Danis K. (Elsevier BV, 2019-06-01)
In this research, pressurized differential scanning calorimeter (PDSC) were used to estimate the thermal and kinetic behaviour of two different crude oils from Tatarstan oil fields under three different pressures (100, 600...
Gasification profiles of Thrace region coal under CO2, N-2/CO2, and N-2/DRY air environments
Kök, Mustafa Verşan; Yildirim, Betul (2019-04-01)
( )This research aimed at understanding the gasification behaviour of Thrace-Saray region coal by conducting several thermogravimetry analysis (TGA) experiments. The effects of heating rate (20-50 degrees C/min), final gas...
Analytical and visual assessment of fluid flow in fractured medium
Canbolat, Serhat; Parlaktuna, Mahmut (Elsevier BV, 2019-02-01)
Most reservoirs consist of natural and artificial fractures, including isolated microscopic fissures. These fractures form complicated paths for reservoir characterization and fluid movement that ultimately impacts product...
The Gas Hydrate Potential of the Eastern Mediterranean Basin
MEREY, Şükrü; LONGINOS, Sotirios Nik. (Bulletin of the Mineral Research and Exploration, 2018-12-25)
Gas hydrate exploration studies have increased substantially since last decade. Gas hydrate reservoirs are commonly found in the marine environment and permafrost. Studies related to natural gas hydrates in the Mediterra...