The Model of Wax Precipitation and Experimental Validation

Abstract:

A comprehensive review of literature concerning rheological property, and wax deposition during involving the pipeline safety problems is presented. The deposition and gelation of waxy oil pose great flow assurance risks, especially in submarine oil pipeline. Even though there have been a lot of studies and breakthroughs in understanding the wax precipitation and deposition in the past few years, there still continue to be some challenges that have remained unsolved. In order to well understand the rheological property of the crude oil, First of all, the issue need to be solved is study the wax precipitation property of the oil. In this paper, an accurate model of wax precipitation in laboratory condition undergoing a cooling process is established. And then we predicted the wax appearance temperature, pour point and the weight of the wax appearance about the oil sample. Here, the calculated results of model are much close to the experimental values, which shows that the model of wax precipitation developed is correct and reasonable. By accurate prediction the WAT, pour point, we can well understand the rheological property, which will help the operators make an impeccable flow restart plan for the planned or emergency production shut-down of waxy oil pipelines

• Periodical: Advanced Materials Research (Volumes 463-464)
• Pages: 1182-1185
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.463-464.1182
• Online since: February 2012
• Authors: Bing Qiang Zhang, Da Shuai Xue, Ji Cheng Yang
• Keywords: Rheological Property, WAT, Wax Deposition, Wax Precipitation Model

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