A fit-for purpose procedure for lead isotopic ratio determination in crude oil, asphaltene and kerogen samples by MC-ICPMS

2012 ◽  
Vol 27 (9) ◽  
pp. 1447 ◽  
Author(s):  
Georgia Sanabria Ortega ◽  
Christophe Pécheyran ◽  
Sylvain Bérail ◽  
Olivier F. X. Donard
Keyword(s):  
Crude Oil ◽  
Isotopic Ratio ◽  
Purpose Procedure ◽  
Fit For Purpose ◽  
Ratio Determination ◽  
Lead Isotopic Ratio

scholarly journals Activated Flooded Jets and Immiscible Layer Technology Help to Remove and Prevent the Formation of Bottom Sediments in the Oil Storage Tanks

2021 ◽  
Author(s):  
Georgii V. Nesyn
Keyword(s):  
Crude Oil ◽  
Bottom Sediments ◽  
External Heat ◽  
Storage Tanks ◽  
High Molecular Weight Polymer ◽  
Molecular Weight Polymer ◽  
Oil Storage ◽  
Screw Propeller ◽  
Fit For Purpose ◽  
Tank Bottom

Two flooded jet methods of tank bottom sediments caving based on either screw propeller generation or nozzle jets generated with entering crude head oppose each other. The comparison is not advantageous for the first one. Exceptionally if crude oil contains some concentration of high molecular weight polymer which can perform Drag Reduction. In this case, the jet range increases by many times, thus, upgrading the capability of caving system. Preventing the sedimentation of crude oil heavy components may be put into practice with Immiscible Layer Technology. Before filling the tank with crude oil, some quantity of heavy liquid, that is immiscible with all the components of crude oil, is poured into the tank. The most suitable/fit for purpose and available liquid is glycerin. Neither paraffin and resins, nor asphaltenes can penetrate through the glycerin layer to settle down at the tank bottom because of its density, which is equal to 1.26 g/cm3. Instead, sediments are concentrated at/on the glycerin surface and when it is heated in external heat exchanger all the sediments ought to move upwards with the convection streams. Thus, no deteriorate sediment is formed in the tank bottom.

Deconvolution of alpha liquid scintillation spectra for quantitative analysis of actinide elements in water samples

2004 ◽  
Vol 92 (3) ◽  
Author(s):  
Jean Aupiais
Keyword(s):  
Quantitative Analysis ◽  
Water Samples ◽  
Environmental Samples ◽  
Liquid Scintillation ◽  
Isotopic Ratio ◽  
Ratio Determination ◽  
Alpha Beta ◽  
Uranium Plutonium ◽  
Actinide Elements

SummaryThe reliability and accuracy of actinide measurement in environmental samples strongly depend on theThe intensity of the internal conversions for thorium, uranium, plutonium and americium have been calculated and normalised to the intensity of the main alpha transition. These data can be used to determine the activity of any above-mentioned actinide by alpha liquid scintillation with alpha/beta discrimination. The quantitative analysis and the isotopic ratio determination of several certified solutions of actinides demonstrate the validity of this approach.

scholarly journals Line shift, line asymmetry, and the $\mathsf{^6}$Li/$\mathsf{^7}$Li isotopic ratio determination

2007 ◽  
Vol 473 (3) ◽  
pp. L37-L40 ◽  
Author(s):  
R. Cayrel ◽  
M. Steffen ◽  
H. Chand ◽  
P. Bonifacio ◽  
M. Spite ◽  
...  
Keyword(s):  
Isotopic Ratio ◽  
Line Shift ◽  
Line Asymmetry ◽  
Ratio Determination

scholarly journals Technologies Involved in the Demulsification of Crude Oil

2021 ◽  
Author(s):  
Karthika Rajamanickam
Keyword(s):  
Crude Oil ◽  
Enhanced Recovery ◽  
Petroleum Industry ◽  
Petroleum Reservoirs ◽  
Basic Research ◽  
Stable Emulsion ◽  
Recovery Processes ◽  
Proper Formulation ◽  
Natural Surfactants ◽  
Fit For Purpose

Due to the use of enhanced recovery processes that necessitate the use of a considerable amount of water, mature petroleum reservoirs generate crude oil with huge amounts of water. The majority of this water gets emulsified into crude oil during production, increasing viscosity and making flow more difficult, resulting in production, transportation, and refining operational challenges that have an influence on corporate productivity. Natural surfactants with a strong potential to create stable emulsions are naturally mixed with crude oils. Because crudes with a high amount of stable emulsion have a lower value, the stable emulsion must be adequately processed to meet industrial requirements. As a result, basic research on natural surfactants that contribute to emulsion stability is examined in order to effectively separate emulsions into oil and water. This would need a review of various emulsification methods as well as the proper formulation for effective demulsification. The petroleum industry recognizes the importance of an efficient demulsification procedure for treating emulsions. Numerous studies on the mechanisms of emulsification and demulsification have been undertaken for decades. To guarantee optimal hydrocarbon output, effective treatment is required. The present paper is to review reported works on the formation of petroleum emulsions, demulsification treatments, and characteristics of fit-for-purpose demulsifiers as well as research trends in emulsion treatment.

scholarly journals Estimation of Uranium Sources in Environmental Samples Using the Isotopic Ratio Determination

2020 ◽  
Author(s):  
Junko Shikimori ◽  
Takeshi Ohno ◽  
Yusuke Fukami ◽  
Yasuhito Igarashi
Keyword(s):  
Environmental Samples ◽  
Isotopic Ratio ◽  
Ratio Determination ◽  
Uranium Sources

scholarly journals LEAD ISOTOPIC RATIO MEASUREMENTS USING ICP-QMS

1970 ◽  
Vol 65 (2) ◽  
Author(s):  
C. T?n?selia ◽  
Mirela Miclean ◽  
Cecilia Roman ◽  
B. Abraham ◽  
E. Cordos ◽  
...  
Keyword(s):  
Isotopic Ratio ◽  
Lead Isotopic Ratio
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