Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Open Access Guideline
Open Access Guideline
Postgraduate Thesis Guideline
Postgraduate Thesis Guideline
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
Characterization of plus fractions for low gas-oil ratio black oil samples in Turkey
Download
index.pdf
Date
2016
Author
Türkmenoğlu, Artuğ
Metadata
Show full item record
Item Usage Stats
213
views
80
downloads
Cite This
Pressure - Volume - Temperature (PVT) analyses simulate the reservoir fluid behavior while flowing from the reservoir to the surface under varying pressure, volume and temperature conditions. There are several PVT simulators that perform PVT calculations. Accurate characterization of a fluid is very important for further studies and reservoir simulations in all reservoir engineering aspects. Because there are a few equations of state and many types of reservoir and reservoir fluids, experimental data does not perfectly match with the PVT simulation results. Low API black oils include heavy hydrocarbons. Therefore, regression and characterization of plus fractions are needed in order to get better results from the PVT simulators. PVT data is usually used for field development program, reserve calculations, and EOR/IOR implementations such as gas flooding. In this study, PVT experiments, which are Constant Composition Experiment, 0 - Flash Experiment, Gas and Oil Compositional Analysis and Viscosity Measurement at reservoir temperature, are conducted on low GOR (20.7 scf/STB < GOR < 62.3 scf/STB) black oil samples. Reservoir fluid samples are obtained from different fields in Turkey. After laboratory experiments, in order to compare the experimental data, PVT simulation studies are performed. During simulation study, with respect to EOS models (SRK and PR with Peneloux Correction), bubble points, oil densities and oil viscosities are used as regression data. Heavier hydrocarbons are lumped together as C7+, C10+ and C20+, which is called as pseudoization process. Effects of critical properties and degree of pseudoization of plus fractions are investigated. Also, correlations to predict critical properties are used. The predictive ability of EOS models after tuning is analysed also by comparing simulational and experimental oil formation volume factors at bubble point pressure. The reason of selecting these parameters is that those are not used as inputs into compositional simulator for regression. PR - Pen EoS is more successful in density predictions than SRK - Pen EoS. Also, pseudoization is highly effective on density predictions. However, for heavy hydrocarbons, small degree of pseudoization gives acceptable results. Viscosity predictions are not effected by both EoS models and pseudoization but, they depend on viscosity correction factors of CSP model. Good agreements with experimental data suggest that PVT simulators can be used as a good alternative, especially when there is no possibility to conduct the experiments.
Subject Keywords
Oil reservoir engineering.
,
Oil fields
URI
http://etd.lib.metu.edu.tr/upload/12619834/index.pdf
https://hdl.handle.net/11511/25527
Collections
Graduate School of Natural and Applied Sciences, Thesis
Suggestions
OpenMETU
Core
Development of expert system for artificial lift selection
Aliyev, Elshan; Sınayuç, Çağlar; Department of Petroleum and Natural Gas Engineering (2013)
During the reservoir production life reservoir pressure will decline. Also after water breakthrough the fluid column weight will increase as hydrostatic pressure will increase because of increased water and oil mixture density. In this case, reservoir pressure may not be enough to lift up the fluid from bottom to the surface. These reasons decrease or even may cause to stop flowing of fluids from the well. Some techniques must be applied to prevent the production decline. Artificial lift techniques are appl...
Analysis of Local Thermal Equilibrium Assumption in Transient Forced Convection in a Graphite Foam Channel
Gürüf, Gürşah; Solmaz, İsmail; Bayer, Özgür (2020-12-01)
In this study, the validity of Local Thermal Equilibrium (LTE) assumption in the transient forced convection of a rectangular channel filled with a block of graphite foam is examined numerically. The governing macroscopic energy conservation equations for solid and gas phases are derived by taking the average of the microscopic one over the averaging volume. Initially, LTE is in existence between the phases and then, the fluid temperature at the channel inlet is suddenly raised. Besides, an appropriate insu...
Analyzing reservoir thermal behavior by using thermal simulation model (sector model in stars)
Samadov, Hıdayat; Akın, Serhat; Kracan, Cevat Özgen; Department of Petroleum and Natural Gas Engineering (2011)
It is observed that the flowing bottom-hole temperature (FBHT) changes as a result of production, injection or shutting the well down. Variations in temperature mainly occur due to geothermal gradient, injected fluid temperature, frictional heating and the Joule-Thomson effect. The latter is the change of temperature because of expansion or compression of a fluid in a flow process involving no heat transfer or work. CMG STARS thermal simulation sector model developed in this study was used to analyze FBHT c...
Analysis of the Specific Heat in the Supercooled Solid Phase of Liquid Crystals
Kilit, Emel; Yurtseven, Hasan Hamit (Informa UK Limited, 2011-01-01)
The specific heat Cp is analyzed using the experimental data at various temperatures in the solid phase of cholesteryl myristate according to a power-law formula for the rapidly and slowly cooled solid in the stability limit. We also analyze the temperature dependence of the Cp using the experimental data for the supercooled solid phase of p-azoxyanisole in the stability limit and the stability temperatures are determined for both cholesteryl myristate and p-azoxyanisole.
Analysis of the Raman Frequency Shifts for the Lattice Modes and Vibrons Related to the Thermodynamic Quantities in the eta Phase of Solid Nitrogen
Yurtseven, Hasan Hamit (Walter de Gruyter GmbH, 2013-08-01)
The thermodynamic quantities of the isothermal compressibility, thermal expansion and the specific heat are calculated here as a function of pressure by using the observed Raman frequencies of the lattice modes and vibrons in the. phase of solid nitrogen. The Pippard relations and their spectroscopic modifications are constructed, and the slope dP/dT is deduced from the Raman frequency shifts in this phase of N-2. It is shown that the thermodynamic quantities can be predicted from the Raman frequency shifts...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
A. Türkmenoğlu, “Characterization of plus fractions for low gas-oil ratio black oil samples in Turkey,” M.S. - Master of Science, Middle East Technical University, 2016.
