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Journal articles
Use of Pulsed Nmr Spectroscopy to Measure the Amount of Solid Deposits As a Function of Temperature in Waxy Crudes
Abstract : Paraffin crystallization in crude oils and in gas condensates is a major problem for petroleum exploitation. Thermodynamic models are used to evaluate the risk. With them, one calculates the Wax Appearance Temperature (WAT) as well as the crystallized fraction as a function of temperature, for temperatures below the WAT. During development, these models are tested against experimental data. Although different methods for measuring the WAT are available in the literature and at petroleum companies, such methods unfortunately do not exist for measuring the crystallized fraction as a function of temperature. In this work, we have developed a low resolution NMR method for measuring the crystallized fraction as a function of temperature. The method was first evaluated using pure samples and was then applied to crude oils. The results were compared to those obtained both from differential calorimetry and from the model.
Cited literature [3 references]
https://hal-ifp.archives-ouvertes.fr/hal-02079016
Contributor : Edp Sciences <>
Submitted on : Monday, March 25, 2019 - 5:22:06 PM
Last modification on : Wednesday, March 27, 2019 - 1:37:14 AM
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Contributor : Edp Sciences <>
Submitted on : Monday, March 25, 2019 - 5:22:06 PM
Last modification on : Wednesday, March 27, 2019 - 1:37:14 AM
Long-term archiving on: : Wednesday, June 26, 2019 - 4:19:18 PM
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