Abstract

Experimental liquid densities of two Omani heavy oils are provided as a function of temperature. The oils contain over 98% unknown fractions with molecular weights over 600. The unknown fractions were split using gamma function and characterized with methods suited for conventional oils. In addition, a previously developed saturated liquid density correlation was modified to calculate the liquid densities of the two heavy oils. A parameter so-called characteristic volume was developed to substitute critical volume. A method for estimating the characteristic volumes for unknown fractions is devised. A set of mixing rules is also furnished to apply with the modified density correlation. When the correlation with the mixing rules were applied to the heavy oils, the agreement with experimental liquid density data was found satisfactory. Average absolute deviation in calculating densities for both oils for temperatures from 288 K to 358 K was found to be 1.2%.

摘要

提供了两种阿曼重油的实验液体密度与温度的函数关系。这些油含有超过 98% 的未知馏分，分子量超过 600。未知馏分使用伽马函数进行分离，并用适用于常规油的方法进行表征。此外，修改了先前开发的饱和液体密度相关性以计算两种重油的液体密度。开发了一个称为特征体积的参数来替代临界体积。设计了一种估计未知部分特征体积的方法。还提供了一组混合规则以适用于修改后的密度相关性。当将与混合规则的相关性应用于重油时，发现与实验液体密度数据的一致性是令人满意的。