Prediction of the wax content of the incipient wax-oil gel in a pipeline: An application of the controlled-stress rheometer

来自 AIP Publishing

喜欢 0

阅读量：

266

作者：

P Singh，HS Fogler，N Nagarajan

展开

摘要：

High molecular weight paraffins are known to form gels of complex morphology at low temperatures due to the low solubility of these compounds in aromatic or naphthene-base oil solvents. The characteristics of these gels are strong functions of the shear and thermal histories of these samples. A model system of wax and oil was used to understand the gelation process of these mixtures. A significant depression in the gel point of a wax-oil sample was observed by either decreasing the cooling rate or increasing the steady shear stress. The wax-oil sample separates into two layers of different characteristics, a gel-like layer and a liquid-like layer, when sheared with a controlled-stress rheometer at high steady shear stresses and low cooling rates. The phase diagram of the model wax-oil system, obtained using a controlled-stress rheometer, was verified by analyzing the wax content of the incipient gel deposits formed on the wall of a flow loop. Based on the rheological measurements, a law has been suggested...

展开

关键词：

Gels Pipelines Phase diagrams Rheometry Solubility

DOI：

10.1122/1.551054

被引量：

250

年份：

1999