Department of Petroleum and Natural Gas Engineering, Article

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Kök, Mustafa Verşan (208)
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Varfolomeev, Mikhail A. (20)

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Recent Submissions

Numerical modeling of the CO2 injection in the Kızıldere geothermal field using multiple inter-well tracer tests
Sevindik, Doguhan Barlas; Erol, Selcuk; Akın, Serhat (2024-05-01)
Many geothermal power plants in Turkey emit high amounts of non-condensable gas (NCG), consisting mainly of CO2. Thus, it is crucial to mitigate the NCG emissions by re-injecting the captured gas back into the reservoir. I...
Experimental study and kinetic modeling of high temperature and pressure CO2 mineralization
Berndsen, Maximilian; Erol, Selçuk; Akın, Taylan; Akın, Serhat; Nardini, Isabella; Immenhauser, Adrian; Nehler, Mathias (2024-02-01)
The potential for in-situ CO2 sequestration was analyzed experimentally for one basaltic hyaloclastite sample from the Nesjavellir geothermal reservoir in Iceland and three metasedimentary rock samples from the Kızıldere g...
Extended Multiple Interacting Continua (E-MINC) Model Improvement with a K-Means Clustering Algorithm Based on an Equi-dimensional Discrete Fracture Matrix (ED-DFM) Model
Doğan, Mehmet Onur (2023-11-01)
Modeling fluid flow in fractured reservoirs can be complicated, not only because ofthe permeability differences between fractures and matrix, but also due to the com-plex network of fractures. If the exact fracture geometr...
CO2 Dissolution in the reservoir brine: An experimental and simulation-based approach
Aydın, Hakkı; Akın, Serhat (2023-07-01)
This study benefits from carbon dioxide gas (CO2) dissolution experiments to mimic CO2 dissolution behavior under reservoir conditions. A unique experimental setup, consisting of a batch reactor, gas flow meter, and a sa...
Update for reactive transport modeling of the Kızıldere geothermal field to reduce uncertainties in the early inspections
Akın, Taylan; Akın, Serhat (2023-5-01)
The development of carbon capture and storage techniques has become essential to reduce and mitigating CO2 emissions to the atmosphere. CarbFix1 and CarbFix2 projects carried out in Iceland demonstrated that the emissio...
Modelling reinjection of two-phase non-condensable gases and water in geothermal wells
Leontidis, Vlasios; Niknam, Pouriya H.; Durgut, Ismail; Talluri, Lorenzo; Manfrida, Giampaolo; Fiaschi, Daniele; Akın, Serhat; Gainville, Martin (2023-03-01)
Steam production from high enthalpy geothermal systems is frequently accompanied by the emission of non-condensable gases (NCGs), initially dissolved in the liquid phase or mixed in the vapour phase at depth in the reservo...
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...
Experimental and numerical investigation of mining assisted heavy oil production for the Bati Raman field, Turkey
Canbolat, Serhat; Öztürk, Hasan; Akın, Serhat (2023-01-01)
This research aims to investigate possible ultimate recovery from the largest oil reserve (Bati Raman) in Turkey using a new method called mining-assisted heavy oil production (MAHOP) where declines (tunnels) are excavated...
Thermal characteristics and model-free kinetics of oil shale samples
Kök, Mustafa Verşan; Bal, Berk; Varfolomeev, Mikhail A.; Nurgaliev, Danis K. (2023-01-01)
This research investigates the non-isothermal thermogravimetric analysis and kinetics of oil shale samples at different heating rates and in the air atmosphere. In all the oil shale samples studied, the TG-DTG curves indic...
Investigation of natural gas hydrate potential of the south Caspian Sea
Mustafayeva, Z.; Parlaktuna, Mahmut (2023-01-01)
Some unique characteristics of the Caspian Sea, especially the South Caspian Sea, such as low geothermal gradient, rapid sedimentation, a great number of mud volcanoes, suitable temperature and pressure conditions make it ...
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...
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 ...
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...
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)
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 ...
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...
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...
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