Microfluidic technique for measuring wax appearance temperature of reservoir fluids

Lab on a Chip ◽  
2016 ◽  
Vol 16 (19) ◽  
pp. 3795-3803 ◽  
Author(s):  
Shahnawaz Molla ◽  
Laura Magro ◽  
Farshid Mostowfi
Keyword(s):  
Microfluidic Device ◽  
Crude Oils ◽  
Powerful Technique ◽  
Wax Appearance Temperature ◽  
Microfluidic Technique

We present a powerful technique for measuring wax appearance temperature (WAT) of crude oils using a simple microfluidic device.

Understanding wax appearance temperature in light crude oils by DSC, NMR, and HT-GC

2017 ◽  
Vol 35 (15) ◽  
pp. 1595-1600 ◽  
Author(s):  
Rashmi Bagai ◽  
Nitu Singh ◽  
Ravindra Kumar ◽  
Anju Chopra ◽  
P. K. Mahendra ◽  
...  
Keyword(s):  
Crude Oils ◽  
Wax Appearance Temperature

scholarly journals The Effect of CO2 on Wax Appearance Temperature of Crude Oils

2016 ◽  
Vol 148 ◽  
pp. 1022-1029 ◽  
Author(s):  
Arya Hosseinipour ◽  
Azuraien Bt Japper-Jaafar ◽  
Suzana Yusup
Keyword(s):  
Crude Oils ◽  
Wax Appearance Temperature

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

A Comparative Evaluation of Selected Correlations for Estimating Wax-Appearance Temperature of Crude Oils

2020 ◽  
Author(s):  
Stella I. Eyitayo ◽  
Kazeem A. Lawal ◽  
Kenneth O. Guobadia ◽  
Mathilda I. Ovuru ◽  
Oluchukwu M. Okoh ◽  
...  
Keyword(s):  
Comparative Evaluation ◽  
Crude Oils ◽  
Wax Appearance Temperature

High Resolution Study of Polytypism: Application to SiC and Au3 Mn

1982 ◽  
Vol 40 ◽  
pp. 540-541
Author(s):  
G. Van Tendeloo ◽  
J. Van Landuyt ◽  
S. Amelinckx
Keyword(s):  
Electron Microscopy ◽  
High Resolution ◽  
Stacking Sequence ◽  
X Ray ◽  
Powerful Technique ◽  
Resolution Study ◽  
The Ideal

Polytypism has been studied for a number of years and a wide variety of stacking sequences has been detected and analysed. SiC is the prototype material in this respect; see e.g. Electron microscopy under high resolution conditions when combined with x-ray measurements is a very powerful technique to elucidate the correct stacking sequence or to study polytype transformations and deviations from the ideal stacking sequence.

Nanosecond laser-induced breakdown assisted by femtosecond laser pre-ionization in air: the effect on spatial resolution and continuous radiation

2020 ◽  
Vol 92 (2) ◽  
pp. 20701
Author(s):  
Bo Li ◽  
Xiaofeng Li ◽  
Zhifeng Zhu ◽  
Qiang Gao
Keyword(s):  
Femtosecond Laser ◽  
Spatial Resolution ◽  
Laser Induced Breakdown Spectroscopy ◽  
Nanosecond Laser ◽  
Breakdown Threshold ◽  
Powerful Technique ◽  
Breakdown Spectroscopy ◽  
Continuous Radiation ◽  
Laser Induced Breakdown

Laser-induced breakdown spectroscopy (LIBS) is a powerful technique for quantitative diagnostics of gases. The spatial resolution of LIBS, however, is limited by the volume of plasma. Here femtosecond-nanosecond dual-pulsed LIBS was demonstrated. Using this method, the breakdown threshold was reduced by 80%, and decay of continuous radiation was shortened. In addition, the volume of the plasma was shrunk by 85% and hence, the spatial resolution of LIBS was significantly improved.

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