Department of Petroleum and Natural Gas Engineering, Article

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Kök, Mustafa Verşan (207)
Akın, Serhat (68)
Parlaktuna, Mahmut (38)
Sınayuç, Çağlar (20)
Varfolomeev, Mikhail A. (19)

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Recent Submissions

Decomposition behavior and kinetics of Beydili and Ihsangazi oil shale deposits (Turkiye) by TG-DTG-MS
Kök, Mustafa Verşan; Varfolomeev, Mikhail A.; Nurgaliev, Danis K. (2023-02-01)
This research mainly investigates the decomposition behavior and kinetics of Beydili and Ihsangazi oil shale deposits (Türkiye) by TG-DTG and MS techniques. In the initial stage of the research, geochemical and organic cha...
Flow and tracer transport in a single fracture at non-isothermal conditions
Tavakkoli Osguei, Yashar; Akın, Serhat (2022-11-01)
Assessing preferential flow that occurs through small fractures or permeable connected pathways of other kinds is important to many processes but is difficult to determine, since most chemical tracers diffuse quickly enoug...
Kinetic Analysis of Methane Hydrate Formation with Butterfly Turbine Impellers
Longinos, Sotirios Nik.; Longinou, Dionisia Dimitra; Myrzakhmetova, Nurbala; Akimbayeva, Nazgul; Zhursumbaeva, Mariamkul; Abdiyev, Kaldibek; Toktarbay, Zhexenbek; Parlaktuna, Mahmut (2022-07-01)
Heat generation during gas hydrate formation is an important problem because it reduces the amount of water and gas that become gas hydrates. In this research work, we present a new design of an impeller to be used for hyd...
Advanced workflow for multi-well tracer test analysis in a geothermal reservoir
Bayer, Peter; AKIN, TAYLAN; Akın, Serhat (2022-05-01)
Interpretation of tracer tests in geothermal reservoirs is carried out by fitting the measured data either with simplified two-dimensional (2-D) analytical solutions or with complex numerical models. Available analytical s...
Searching for the root cause of shale well rate variance: Highly variable fracture treatment response
TUĞAN, MURAT FATİH; Weijermars, Ruud (2022-03-01)
This case study highlights that shale wells drilled with tight well spacing in the same landing zone using the same fracture treatment plan, commonly show large variance in well productivity. Searching for the root cause(s...
Application of TGA-MS technique for oil shale characterization and kinetics
Kök, Mustafa Verşan; Varfolomeev, Mikhail A.; Nurgaliev, Danis K.; Kandasamy, Jayaraman (2022-03-01)
Thermal characteristics and model free kinetics of four different oil shale samples were studied using simultaneous thermogravimetry-mass spectrometer (TGA-MS) analysis performed at three different heating rates and under ...
Fluid-CO2 injection impact in a geothermal reservoir: Evaluation with 3-D reactive transport modeling
AKIN, TAYLAN; Baser, Ali; Saracoglu, Onder; Akın, Serhat (2022-01-01)
Geothermal energy is commonly recognized as an environmentally friendly source of energy. However, geothermal fluids have unusually high CO2 content, particularly, in carbonated geothermal reservoirs. An efficient method t...
Nanoparticle-stabilized CO2 foam to improve conventional CO2 EOR process and recovery at Bati Raman oil field, Turkey
Safran, S. Esra; Kök, Mustafa Verşan (2022-01-01)
(B.Raman), which is the largest oil field of Turkey's already existing CO2 injection system, does not produce at the desired efficiency due to the natural fracture characteristics. Therefore, this research is performed to ...
The combustion performance and kinetics of Saray-Thrace region coal: The effects of particle size and heating rate
Kök, Mustafa Verşan; Yıldırım, Betül (2022-01-01)
The impact of methionine, tryptophan and proline on methane (95%)-propane (5%) hydrate formation
Longinos, Sotirios Nik; Longinou, Dimitra-Dionisia; Parlaktuna, Mahmut; Toktarbay, Zhexenbek (2021-10-01)
This study examines the impact of three amino acids such as proline, methionine and tryptophan on methane (95%)-propane (5%) hydrate formation with the use of different impellers. The concentration of amino acids was 1 wt%...
Comprehensive approach to torque and lost circulation problems in geothermal wells in terms of drilling fluid
Sönmez, Ahmet; Kök, Mustafa Verşan; Bal, Berk; Bagatır, Gökhan; Gücüyener, I.Hakkı (2021-09-01)
Drilling in a lost circulation zone has long been a challenge in geothermal wells due to its strong potential for high torque and wellbore instability. Particularly in deviated, extended reach and horizontal wells, frictio...
Kinetic study of methane hydrate formation with the use of a surface baffle
Longinos, Sotirios Nik; Longinou, Dimitra-Dionisia; Celebi, Erdem; Toktarbay, Zhexenbek; Parlaktuna, Mahmut (2021-09-01)
The kinetics of methane gas hydrate formation was obtained by different dual and dual mixed impeller experiments with surface baffle at 42.5 bars pressure and 2 degrees C temperature. The outcomes indicated that induction ...
Seismic velocity characterisation and survey design to assess CO2 injection performance at Kizildere geothermal field
Parlaktuna, Mahmut; Parlaktuna, Burak; Sınayuç, Çağlar; Senturk, Erdinc; Tonguc, Erinc; Demircioglu, Oncu; Poletto, Flavio; Bohm, Gualtiero; Bellezza, Cinzia; Farina, Biancamaria (2021-08-01)
The noncondensable gases in most geothermal resources include CO2 and smaller amounts of other gases. Currently, the worldwide geothermal power is a small sector within the energy industry, and CO2 emissions related to the...
Examination of asparagine, aspartic acid and threonine in methane (95%)-propane (5%) gas hydrates as kinetic inhibitors
Longinos, Sotirios Nik.; Parlaktuna, Mahmut (2021-08-01)
The formation of gas hydrates blocks oil and gas transportation in pipelines, nevertheless sufficient comprehension of gas hydrate behavior is the key to its prolepsis. Thus this study reports the impact of three amino aci...
TGA and DSC investigation of different clay mineral effects on the combustion behavior and kinetics of crude oil from Kazan region, Russia
Kök, Mustafa Verşan; Nurgaliev, Danis K. (2021-05-01)
In this research, the effect of different clay minerals (bentonite, illite and kaolinite) on the combustion behavior and kinetics of crude oils from Kazan region (Russia) was studied using thermogravimetry (TGA) and differ...
Transient shape factors for dual-porosity simulation of tight rocks
Kilicaslan, Ufuk; Akın, Serhat (2021-05-01)
The shape-factor concept provides an elegant and powerful upscaling method for fractured reservoir simulation. Many different shape-factors, among which the well-known Warren and Root, and Kazemi shape-factors have been pr...
Kinetic analysis of CO2 hydrate formation by the use of different impellers
Longinos, Sotirios Nik; Parlaktuna, Mahmut (2021-04-01)
This study investigates the effects of types of impellers with the use of full baffle in carbon dioxide gas hydrate formation. In single impeller experiments initial hydrate formation rate is higher with the use of rushton...
Estimation of upcoming problems in Alaşehir geothermal field using a numerical reservoir model
Aydin, Hakki; Akın, Serhat (2021-04-01)
Alaehir geothermal area located in Alaehir Graben, West Anatolia, is the latest target for geothermal field development in Turkey. Seven different operators are developing the power capacity in this geothermal field on a s...
Effect of inlet pressure on crude oil combustion -laboratory approach-
Kök, Mustafa Verşan; 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...
Fracture behaviour and seismic response of naturally fractured coal subjected to true triaxial stresses and hydraulic fracturing
Cao, Wenzhuo; Yıldırım, Betül; Durucan, Sevket; Wolf, Karl-Heinz; Cai, Wu; Agrawal, Harshit; Korre, Anna (2021-03-01)
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