Wax precipitation from North Sea crude oils. 3. Precipitation and dissolution of wax studied by differential scanning calorimetry

1991 ◽  
Vol 5 (6) ◽  
pp. 914-923 ◽  
Author(s):  
Asger Baltzer Hansen ◽  
Elfinn Larsen ◽  
Walther Batsberg Pedersen ◽  
Anne B. Nielsen ◽  
Hans Petter Roenningsen
Keyword(s):  
Differential Scanning Calorimetry ◽  
North Sea ◽  
Crude Oils ◽  
Scanning Calorimetry ◽  
Wax Precipitation

The Impact of the Composition of the Crude Oils on the Wax Crystallization

2014 ◽  
Vol 625 ◽  
pp. 196-200 ◽  
Author(s):  
Arya Hosseinipour ◽  
Khalik M. Sabil ◽  
Andhy Arya Ekaputra ◽  
Azuraien B. Japper ◽  
Lukman B. Ismail
Keyword(s):  
Differential Scanning Calorimetry ◽  
High Pressure ◽  
Crude Oil ◽  
Crude Oils ◽  
Solubility Curve ◽  
Scanning Calorimetry ◽  
Wax Precipitation ◽  
Wax Appearance Temperature ◽  
Wax Crystallization ◽  
The Impact

One of the major problems in petroleum industry is wax precipitation and deposition. The component’s compositional and structural analysis of the crude oils is key factors to be studied to mitigate wax formation and precipitation tendency for the betterment of the crude oil flowability. In this work, the compositions and structures of two Malaysian and Sudanese crude oil samples were determined to investigate their effects on wax precipitation. The GC/MS was used to analyze hydrocarbon components. For this work, high pressure micro differential scanning calorimetry (HPμDSC) is used to determine the wax crystallization point and solubility curve. Results showed a linear relationship between wax appearance temperature (WAT) and weight percentage of component in the crude oil having > 14 carbon atoms. In addition, the effect of temperature on the amount of wax precipitation has also been investigated. Keywords: N-paraffin, Wax appearance temperature, Wax precipitation, High pressure micro differential scanning calorimetry

Study of Live Oil Wax Precipitation with High-Pressure Micro-Differential Scanning Calorimetry†

2011 ◽  
Vol 25 (2) ◽  
pp. 568-572 ◽  
Author(s):  
Priyanka Juyal ◽  
Tran Cao ◽  
Andrew Yen ◽  
Rama Venkatesan
Keyword(s):  
Differential Scanning Calorimetry ◽  
High Pressure ◽  
Scanning Calorimetry ◽  
Wax Precipitation ◽  
Live Oil

Wax precipitation from North Sea crude oils: 1. Crystallization and dissolution temperatures, and Newtonian and non-Newtonian flow properties

1991 ◽  
Vol 5 (6) ◽  
pp. 895-908 ◽  
Author(s):  
Hans Petter Roenningsen ◽  
Brit Bjoerndal ◽  
Asger Baltzer Hansen ◽  
Walther Batsberg Pedersen
Keyword(s):  
North Sea ◽  
Crude Oils ◽  
Flow Properties ◽  
Newtonian Flow ◽  
Wax Precipitation

Differential scanning calorimetry characterization of water-in-oil emulsions from Mexican crude oils

2010 ◽  
Vol 102 (3) ◽  
pp. 899-906 ◽  
Author(s):  
Javier A. Díaz-Ponce ◽  
Eugenio A. Flores ◽  
Alfonso Lopez-Ortega ◽  
Jose G. Hernández-Cortez ◽  
Arquimides Estrada ◽  
...  
Keyword(s):  
Differential Scanning Calorimetry ◽  
Crude Oils ◽  
Scanning Calorimetry ◽  
Oil Emulsions

Study on Morphology and Structure of Wax Crystals in Waxy Crudes at Apex Temperature of Wax Precipitation

2013 ◽  
Vol 318 ◽  
pp. 293-296 ◽  
Author(s):  
Shi Ze Yi ◽  
Peng Gao
Keyword(s):  
Differential Scanning Calorimetry ◽  
Fractal Dimension ◽  
Crystal Morphology ◽  
Experimental Result ◽  
Strong Positive Correlation ◽  
Scanning Calorimetry ◽  
Wax Precipitation ◽  
Morphology And Structure ◽  
Wax Crystal ◽  
Wax Crystals

The apex temperature of wax precipitation was measured with fractal dimension characterizing the wax crystal morphology, and Differential Scanning Calorimetry (DSC), respectively. The experimental result revealed that the concentration of precipitated wax in virgin waxy crudes had the strong positive correlation with the fractal dimension of wax crystals. At the apex temperature, the wax crystals changed from tiny microscopic spots to clear and visible ones, with their morphology and structure becoming more intricate.

Wax precipitation from North Sea crude oils. 4. Thermodynamic modeling

1991 ◽  
Vol 5 (6) ◽  
pp. 924-932 ◽  
Author(s):  
Karen Schou Pedersen ◽  
Per Skovborg ◽  
Hans Petter Roenningsen
Keyword(s):  
North Sea ◽  
Thermodynamic Modeling ◽  
Crude Oils ◽  
Wax Precipitation
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