Applying Wax Deposition Models for Field Predictions

2016 ◽  
pp. 148-165
Keyword(s):  
Wax Deposition ◽  
Deposition Models

Validation of Wax Deposition Models Using Field Data of Western Onshore, India

2019 ◽  
Author(s):  
Jatin R. Agarwal ◽  
Simran Dhingra ◽  
Neel Shah ◽  
Subhash N. Shah
Keyword(s):  
Field Data ◽  
Wax Deposition ◽  
Deposition Models

DEVELOPMENT OF AN APPARATUS FOR PRODUCING WAX DEPOSITION IN PIPE SECTIONS FOR PIGGING TESTS

2017 ◽  
Author(s):  
GEYDISON GONZAGA DEMETINO ◽  
Iuri Muniz Pepe ◽  
Ivanoé João Rodowanski ◽  
Luiz Carlos Soares Junior
Keyword(s):  
Wax Deposition

Study of the causes for wax deposition under the operating conditions of main oil pipelines

2020 ◽  
Vol 10 (6) ◽  
pp. 610-619
Author(s):  
Rustam Z. Sunagatullin ◽  
◽  
Rinat M. Karimov ◽  
Radmir R. Tashbulatov ◽  
Boris N. Mastobaev ◽  
...  
Keyword(s):  
Phase Diagrams ◽  
Total Content ◽  
Operating Conditions ◽  
Wax Deposition ◽  
Oil Saturation ◽  
Oil Pipelines ◽  
Thermobaric Conditions ◽  
Wall Zone ◽  
Significant Factors ◽  
Commercial Oil

The results of investigations of the main causes and the most significant factors of intensification of paraffin deposition in main oil pipelines are presented. A comprehensive analysis of the composition and properties of commercial oils and their sediments was carried out, according to which phase diagrams of equilibrium of oil dispersed systems were obtained using the example of commercial oils from Bashkir fields. Based on the phase diagrams, a curve of wax oil saturation was constructed, the analysis of which confirms that the existing thermobaric conditions during the operation of main oil pipelines do not allow transporting oil without the risk of waxing. It was noted a special influence of the value of the temperature gradient in the near-wall zone and the imbalance of the ratio of high-molecular oil components in commercial batches formed in the process of joint pumping on the intensity of waxing of sections of oil pipelines complicated by deposits, which was confirmed by statistical data on the frequency of pigging. The regularities obtained in this way are proposed to be used as an express method for predicting complications associated with intensive waxing of main oil pipelines. In order to quickly assess the risks of waxing of sections of main oil pipelines, an indicator is introduced that characterizes the ratio of the content of solid paraffins to the total content of resins and asphaltenes of oil, called the criterion of instability of a commercial oil batch.

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