西南石油大学学报（自然科学版）Issue(1)：128-134,7.DOI:10.11885/j.issn.1674-5086.2012.11.19.02
近井地带高速非达西动边界对产能预测的影响
Effect of Non-Darcy Flow Moving Boundary of High Velocity Nearby Wellbore on Productivity Prediction
摘要
Abstract
To better understand the effect of the non-Darcy flow moving boundary,the effect of non-Darcy flow near wellbore caused by high velocity on productivity prediction was studied. Based on seepage theory and inertial theory,the non-Darcy moving boundary equation and a new deliverability equation are derivated. Then we proposed the concepts of critical perme-ability,critical productivity and critical pressure,and the non-Darcy boundary skin factor. Only when permeability,gas rate and pressure are all larger than critical value,non-Darcy flow appears. And a non-Darcy moving boundary skin factor is a function of permeability,porosity,critical Reynolds number andβexpressions,which reflects the effect of the petrophysical properties. And the larger the skin is,the narrower the moving boundary is and the greater its effect. Finally,a comparison with conventional deliverability equation revealed that,if the permeability range is 1∼10 mD,significant differences exist in these IPR curves. This paper proposed the effect of non-Darcy flow moving boundary on production prediction,which improve the accuracy of the productivity prediction.关键词
近井地带/高速非达西动边界/雷诺数/产能方程/产能预测Key words
near wellbore/non-Darcy moving boundary of high velocity/Reynolds number/deliverability equation/produc-tivity prediction分类
能源科技引用本文复制引用
李元生,李相方,藤赛男,徐大融,和向楠..近井地带高速非达西动边界对产能预测的影响[J].西南石油大学学报（自然科学版）,2015,(1):128-134,7.基金项目
国家科技重大专项“西非深水油田注采参数优化及单井产能预测研究”（2011ZX05030-005-04）。 （）
