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
Wax appearance temperature (WAT) determinations of different origin crude oils by differential scanning calorimetry
Date
2018-09-01
Author
Kök, Mustafa Verşan
Nurgaliev, Danis K.
Metadata
Show full item record
This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
.
Item Usage Stats
233
views
0
downloads
Cite This
In this research, wax appearance temperatures (WAT) of eight different crude oils from south-eastern region of Turkey were determined by differential scanning calorimetry. The experiments were performed at a heating/ cooling-rate of 2 degrees C/min from 60 to -20 degrees C It was observed that the wax appearance temperature of different origin crude oils was varied between 14.2 and 37.8 degrees C depending on the API gravity and wax content. It was also observed that the crude oils have enthalpy of precipitation ranging from -3.42 to + 6.39 mW and melting enthalpy from - 2.5 to + 7.46 mW, respectively.
Subject Keywords
Crude oil
,
Wax appearance temperature
,
Wax content
,
Differential scanning calorimetry
URI
https://hdl.handle.net/11511/48303
Journal
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
DOI
https://doi.org/10.1016/j.petrol.2018.05.045
Collections
Department of Petroleum and Natural Gas Engineering, Article
Suggestions
OpenMETU
Core
Wax deposition in horizontal wells
Ozbayoglu, M.E.; Demiral, B.; Kök, Mustafa Verşan (2000-01-01)
In this research, wax deposition in horizontal well bores was studied. In a horizontal well, the main mechanism for wax appearance is the pressure change rather than the temperature change. Six different thermodynamic models were improved for horizontal wells by adding a pressure function, and a computer program was developed to simulate the precipitation phenomena in horizontal wells. Solid-liquid equilibrium constants for each pseudo-component were calculated. Critical pressures and overall solid mole fac...
Combustion characteristics and kinetic analysis of Turkish crude oils and their SARA fractions by DSC
Kök, Mustafa Verşan (Springer Science and Business Media LLC, 2013-10-01)
In this study, two Turkish crude oils from southeastern part of Turkey and their saturate, aromatic, resin fractions were analyzed by differential scanning calorimetry (DSC). The experiments were performed at three different heating rates (5, 10, 15 A degrees C min(-1)) under air atmosphere. Two different reaction regions were observed from DSC curves due to the oxidative degradation of crude oil components. In the first reaction region, it was deduced that the free moisture, volatile hydrocarbons were evap...
Comparative methods in the determination of wax content and pour points of crude oils
Kök, Mustafa Verşan; Claudy, P. (2007-12-01)
In this research, differential scanning calorimetry (DSC) and gas chromatography is used to determine the wax content of fourteen crude oils of different sources. Different empirical equations were applied to compare the wax content of crude oils. For the fourteen crude oil samples with the wax content ranging from 7.5 to 43.8 mass%, it was observed that the results of empirical equations were in good agreement with those determined by DSC and GC. Accordingly, a correlation between ASTM pour point and the t...
Comparison of Wax Appearance Temperatures of Crude Oils by Differential Scanning Calorimetry, Thermomicroscopy and Viscometry
Kök, Mustafa Verşan (1996-07-01)
This paper presents the results of an experimental study of the determination of wax appearance temperatures (WAT) of 15 crude oils by differential scanning calorimetry (d.s.c.), thermomicroscopy and viscometry. Good agreement is obtained among the three techniques for crude oils having a significant precipitation rate. Considering the great diversity of crude oils, it is concluded that d.s.c. and thermomicroscopy should be used together for a better understanding of the determination of WAT of crude oils.
Pyrolysis and Combustion Studies of Fossil Fuels by Thermal Analysis Methods Review
Kök, Mustafa Verşan (1995-02-01)
Instances where differential scanning calorimetry, thermogravimetry and differential thermal analysis have been applied to study the pyrolysis and combustion behaviour of fossil fuels (peat, lignite, bituminous coals, anthracite, oil shales, crude oils, lignite-oil mixtures, etc.) are reviewed. The literature survey showed that thermal methods were important not only theoretically but also from a practical point of view.
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
M. V. Kök and D. K. Nurgaliev, “Wax appearance temperature (WAT) determinations of different origin crude oils by differential scanning calorimetry,”
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
, pp. 542–545, 2018, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/48303.