Solar generated steam injection in heavy oil reservoirs

Afşar, Cansu
Turkey is one of the countries having mostly heavy oil reservoirs with 10-15˚ API gravity. Due to high amount of residual oil in the reservoir, thermal injection methods are evaluated to increase recovery in south-east of Turkey. However, the fuel cost of steam generation, that represents 60% of the total project cost, is a major challenge for companies. Combination of solar generated steam technology and heavy oil recovery techniques encourage companies to reduce the operation costs. This solar aided steam injection system has already proven its capability to replace natural gas systems up to 80%, depending on the steam requirement and weather data. In this study, a pilot scale area was selected in order to present an evaluation whether the solar generated steam injection is technically and economically feasible in the heavy oil reservoirs. Operational data such as injection rate, steam temperature and steam quality were determined by using published studies. Continuous steam injection together with natural gas burner back-up system was used when direct normal insolation (DNI) is intermittent to maintain required steam during troublesome climates, nights and winter seasons. After solar collector system was designed in Transient System Simulation Tool (TRNSYS) and combined with the steam injection method, economic analyses were also carried out to determine if the solar thermal technology is feasible for the candidate pilot field. Results indicated that existing DNI of the selected region was not high enough to maintain the continuous steam injection. It caused a requirement of natural gas back up system. Economic analyses of combined system indicated that fuel saving cannot compensate the initial cost of solar project with current oil price in 30 years period.


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 control the CO2 mobility in the reservoir by creating nanoparticle stabilized CO2 foam using the property of nanoparticles to be adsorbed at the gas-water interface permanently and to achieve additional oil recovery at the B. Raman oil field. In the initial stage of the research, dispersio...
Thermal Modeling and Verification of PV Module Temperature and Energy Yield Using Outdoor Measurements for Ankara, Turkey
Tuncel, Bilge; Akınoğlu, Bülent Gültekin; ÖZDEN, TALAT; Balog, Robert S (2018-11-14)
Ankara is in the Central Anatolia region of Turkey where the climate is dry-continental with an annual solar insolation of around 1750 kWh/m(2). In the transition to renewable energy, detailed analyses are required to ensure effective and economic utilization of the available solar resource. An essential part of these analyses is to calculate expected energy yield. For photovoltaic (PV) systems, this includes the effect of temperature on the PV efficiency, which determines the power yield of the PV modules....
Nanoparticle-stabilized CO2 foams to improve conventional CO2 EOR process at Batı Raman field
Safran, Saibe Esra; Kök, Mustafa Verşan; Department of Petroleum and Natural Gas Engineering (2019)
Because of the natural fractured characteristic of the B. Raman field which is the largest field of Turkey, already existing CO2 injection system does not work at desired efficiency. Thus, the main purpose of this project is to control CO2 mobility in the reservoir by creating nanoparticle stabilized CO2 foam using the property of nanoparticles to place at the gas-water interface permanently and to achieve additional oil recovery at B. Raman. For this purpose, first nanoparticle dispersion stabilization and...
Optimization of CO₂ EOR and storage design under uncertainity
Bender, Serdar; Akın, Serhat; Department of Petroleum and Natural Gas Engineering (2016)
The combination of CO₂ enhanced oil recovery (EOR) and permanent CO₂ storage in mature oil reservoirs have the potential to provide a critical near-term solution for reducing greenhouse gas emissions. In the literature, although there are many studies about CO₂ storage and EOR, only a few studies have focused on maximizing both the oil recovery and the CO₂ storage. Moreover, these studies are either experimental or conducted using synthetic reservoir models. Typically, pure CO₂ has the property of mixing wi...
Türkiye'deki Jeotermal Bölge Isıtma Sistemlerinin Gelişimi
Parlaktuna, Mahmut; Parlaktuna, Burak (2021-07-06)
Turkey is one of the few countries that has almost all possible applications of geothermal energy. Geothermal district heating has a relatively short history (since 1987) compared to other direct utilization but plays important economic, social and environmental roles in some towns. There are 18 geothermal district heating systems (GDHS), mainly in the Aegean region with resource temperatures between 57–145C. Current heating capacities of those systems are in the range of 570 to 37500 Residence Equivalent ...
Citation Formats
C. Afşar, “Solar generated steam injection in heavy oil reservoirs,” M.S. - Master of Science, Middle East Technical University, 2014.