scholarly journals Predictions for wax deposition in a pipeline carrying paraffinic or ‘waxy’ crude oil from the heat-transfer approach

2021 ◽  
Author(s):  
Anil K. Mehrotra ◽  
Samira Haj-Shafiei ◽  
Sina Ehsani
Keyword(s):  
Heat Transfer ◽  
Crude Oil ◽  
Wax Deposition ◽  
Waxy Crude Oil ◽  
Waxy Crude

Effect of Thermal Treatment Temperature on the Flowability and Wax Deposition Characteristics of Changqing Waxy Crude Oil

2018 ◽  
Vol 32 (10) ◽  
pp. 10605-10615 ◽  
Author(s):  
Haoran Zhu ◽  
Chuanxian Li ◽  
Fei Yang ◽  
Hongye Liu ◽  
Dinghong Liu ◽  
...  
Keyword(s):  
Thermal Treatment ◽  
Crude Oil ◽  
Treatment Temperature ◽  
Wax Deposition ◽  
Waxy Crude Oil ◽  
Thermal Treatment Temperature ◽  
Waxy Crude

Wax deposition during production of waxy crude oil and its remediation

2017 ◽  
Vol 35 (18) ◽  
pp. 1831-1838 ◽  
Author(s):  
Ashish Dewangan ◽  
Ashok Kumar Yadav
Keyword(s):  
Crude Oil ◽  
Wax Deposition ◽  
Waxy Crude Oil ◽  
Waxy Crude

Heat transfer analysis of waxy crude oil under a new wide phase change partition model

2019 ◽  
Vol 76 (12) ◽  
pp. 991-1005
Author(s):  
Ying Xu ◽  
Xin Nie ◽  
Zhonghua Dai ◽  
Xiaoyan Liu ◽  
Yang Liu ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Crude Oil ◽  
Phase Change ◽  
Heat Transfer Analysis ◽  
Waxy Crude Oil ◽  
Partition Model ◽  
Waxy Crude

Study of Wax Deposition Rate in Waxy Crude Oil Pipeline

2013 ◽  
Vol 401-403 ◽  
pp. 891-894 ◽  
Author(s):  
Qing Lin Cheng ◽  
Xu Xu Wang ◽  
Xian Li Li ◽  
Wei Sun ◽  
Ling De Meng
Keyword(s):  
Crude Oil ◽  
Deposition Rate ◽  
Normal Operation ◽  
Wax Deposition ◽  
Waxy Crude Oil ◽  
Waxy Crude ◽  
Oil Pipeline ◽  
Oil Transportation ◽  
Different Seasons ◽  
Deposition Tendency

In waxy crude oil transportation process, wax crystals start to precipitate as the oil temperature drops to wax appearance point, and then form a network structure gradually which attaches to the wall. The problem of wax deposition seriously affects the normal operation of pipeline. Based on the wax deposition tendency coefficient method, combined with experimental data, the parameters related to wax deposition tendency coefficient is fitted, and the wax deposition rate equation of crude oil is determined finally. The variation law of wax deposition rate along the pipeline is analyzed, and the influence of different seasons and different throughput the on wax deposition rate is discussed subsequently.

Review on the gelation of wax and pour point depressant in crude oil multiphase system

2021 ◽  
Vol 35 (12) ◽  
pp. 2130005
Author(s):  
Hongmei Xu ◽  
Yanpu Wang ◽  
Kun Wang
Keyword(s):  
Crude Oil ◽  
Pour Point ◽  
Molecular Design ◽  
Research Progress ◽  
Multiphase System ◽  
Wax Deposition ◽  
Pour Point Depressant ◽  
Waxy Crude Oil ◽  
Waxy Crude ◽  
Point Depressant

The gelation of waxy crude oil multiphase system can result in the formation of network cementitious structure, which seriously impacts the safe and economic production of crude oil. This paper reviews current experimental, theoretical and numerical results on the gelation of wax in crude oil. For the experimental side, the most important problems are in situ measurement and measurement accuracy. On the theoretical side, the present methods own defects of low accuracy and limited application scope. Numerically, the models are of oversimplification, which are hardly applied to the real production. Besides, as a promising solution, the research progress of crude oil pour point depressant is also reviewed. The molecular design is a powerful approach to develop the optimized pour point depressant. The goals of this paper are to bridge the microscale atomic interactions and the macroscale physicochemical properties of waxy crude oil and pour point depressant, so as to lay a solid theoretical basis for preventing and controlling wax deposition in crude oil. These are beneficial to the future efficient, clean and safe energy production system.

Characterization of a Water-in-Waxy Crude Oil Emulsion by its Steady Apparent Viscosity

2019 ◽  
Author(s):  
Liping Guo ◽  
Tao Feng ◽  
Yang Liu ◽  
Xu Chen ◽  
Wenbo Li ◽  
...  
Keyword(s):  
Crude Oil ◽  
Viscous Flow ◽  
Apparent Viscosity ◽  
Rheological Parameters ◽  
Wax Deposition ◽  
Waxy Crude Oil ◽  
Oil Emulsion ◽  
Waxy Crude ◽  
Stirring Time ◽  
Water Cut

Abstract The rheological properties of water-in-waxy crude oil emulsion depend highly on its forming conditions. Among these, the steady apparent viscosity is capable of characterizing its degree of emulsification. Adopting waxy crude oil in the field, we examine the influence of the water cut, the stirring speed, and the stirring time on the steady apparent viscosity of the emulsions formed under various conditions in this study. A model based on the viscous flow entropy generated in emulsion preparation is applied to correlate the steady apparent viscosity with the key parameters. A regression model is constructed for the dependence of the steady apparent viscosity on the viscous flow entropy, the shear rate, the rheological parameters of blank crude oil, and the wax deposition volume.

Sign in / Sign up

Export Citation Format

Share Document