scholarly journals DETERMINATION OF NATURAL GAS COMPOSITION AND CONCENTRATION WITH RAMAN SPECTROSCOPY � HIGH PRESSURE AND HIGH TEMPERATURE MEASUREMENTS

2016 ◽  
Author(s):  
Szymon Kuczynski
Keyword(s):  
Raman Spectroscopy ◽  
High Pressure ◽  
High Temperature ◽  
Natural Gas ◽  
Temperature Measurements ◽  
Gas Composition ◽  
High Temperature Measurements

Downhole measurements and determination of natural gas composition using Raman spectroscopy

2019 ◽  
Vol 65 ◽  
pp. 25-31 ◽  
Author(s):  
K.M. Dąbrowski ◽  
Sz Kuczyński ◽  
J. Barbacki ◽  
T. Włodek ◽  
R. Smulski ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Natural Gas ◽  
Gas Composition ◽  
Downhole Measurements

scholarly journals Depolarization Ratios of Methane Raman Bands as a Function of Pressure

Molecules ◽  
2020 ◽  
Vol 25 (8) ◽  
pp. 1951
Author(s):  
Dmitry Petrov
Keyword(s):  
Raman Spectroscopy ◽  
High Pressure ◽  
Natural Gas ◽  
Raman Spectra ◽  
Pressure Dependence ◽  
Pressure Range ◽  
Gas Composition ◽  
Depolarization Ratio ◽  
Depolarization Ratios

In this work, we measured the intensities of Q-branches of the ν1, ν2 and ν3 bands in the polarized and depolarized methane Raman spectra in the pressure range of 1–60 atm. It was established that the pressure dependence of depolarization ratios of the ν2 and ν3 bands are negligible. In turn, the depolarization ratio of the ν1 band increases with increasing pressure and reaches approximately 0.0045 at 60 atm. These data are more precise than previously published ones because ν1 band intensities were determined taking into account the contribution of overlapping lines of ν3 band. The presented data will be useful in calculating the methane polarizabilities at high pressure, as well as in calculating methane Raman spectra for measuring the natural gas composition using Raman spectroscopy.

Passive Auto-Focus Algorithm for Correcting Image Distortions Caused by Gas Flow in High-Temperature Measurements of Surface Phenomena

2012 ◽  
Vol 17 (4) ◽  
pp. 379-384 ◽  
Author(s):  
Krzysztof Strzecha ◽  
Tomasz Koszmider ◽  
Damian Zarębski ◽  
Wojciech Łobodziński
Keyword(s):  
High Temperature ◽  
Gas Flow ◽  
Temperature Measurements ◽  
Surface Phenomena ◽  
Auto Focus ◽  
High Temperature Measurements

Abstract In this paper, a case-study of the auto-focus algorithm for correcting image distortions caused by gas flow in high-temperature measurements of surface phenomena is presented. This article shows results of proposed algorithm and methods for increasing its accuracy.

Sign in / Sign up

Export Citation Format

Share Document