二氧化碳吞吐合理焖井时间数学模型研究
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摘要
以CO_2吞吐单井模型为基础,设计了考虑渗透率、有效厚度、孔隙度、含油饱和度、CO_2注入量以及CO_2注入速度等6因素3水平的正交设计数值模拟方案.再利用方差分析法判断上述6个因素对CO_2焖井时间影响显著程度的前提下,采用多元线性回归方法回归出了焖井时间与渗透率、注入量、孔隙度、含油饱和度和注入速度等5个显著影响因素的关系式.F检验和拟合优度检验结果及A油田CO_2吞吐实例验证结果均表明,回归方程具有较高的预测精度,可为现场施工提供理论指导.
A numerical simulation program of six factors three levels has been designed in th is paper,considering permeability,effective thickness,porosity,oil saturation,CO_2 injection volume and CO_2 injection rate on the base of single well model.Multiple linear regression method has been used to regress the relationship between soak time and five significant factors of permeability,injection volume,porosity,oil saturation,and injection rate,based on using variance analysis method to determine significant degree of the above mentioned six factors how to affect CO_2 soak time.The results of F test,goodness of fit test and CO_2 huff and puff case of Yushulin Oilfield showed that the regression equation has higher prediction accuracy which could provide theoretical foundation for field conduct.
A numerical simulation program of six factors three levels has been designed in th is paper,considering permeability,effective thickness,porosity,oil saturation,CO_2 injection volume and CO_2 injection rate on the base of single well model.Multiple linear regression method has been used to regress the relationship between soak time and five significant factors of permeability,injection volume,porosity,oil saturation,and injection rate,based on using variance analysis method to determine significant degree of the above mentioned six factors how to affect CO_2 soak time.The results of F test,goodness of fit test and CO_2 huff and puff case of Yushulin Oilfield showed that the regression equation has higher prediction accuracy which could provide theoretical foundation for field conduct.
引文
[1]钱卫明,程诗胜,葛永涛.低渗透油藏CO_2吞吐参数的实践与认识[J].断块油气田,2004,11(5):40-42.
[2]杨胜来,郎兆新.影响CO_2吞吐采油效果的若干因素研究[J].西安石油学院学报,2002,17(1):32-35.
[3]吴文有,张丽华,陈文彬.CO_2吞吐改善低渗透油田开发效果可行性研究[J].大庆石油地质与开发,2001,20(6):51-52.
[4]程诗胜,王明才,刘松林.单井CO_2吞吐技术效果评价及工艺认识[J].小型油气藏,2004,9(2):58-59.
[5]李爱芬,陈明强,宋浩鹏等.焖井时间对CO_2吞吐开发低渗透油藏影响机理研究[J].科学技术与工程,2016,16(7):173-175.
[6]董如何,肖必华,方永水.正交设计的理论分析方法及其应用[J].安徽建筑工业学院学报,2004,12(6),103-106.
[7]茆诗松,周纪芗.概率论与数理统计(第二版)[M].北京:中国统计出版社,2000,232-245.
[8]郭会利.多元回归的逐步回归预测模型[J].数学教学与研究,2009,26:92-93.
[2]杨胜来,郎兆新.影响CO_2吞吐采油效果的若干因素研究[J].西安石油学院学报,2002,17(1):32-35.
[3]吴文有,张丽华,陈文彬.CO_2吞吐改善低渗透油田开发效果可行性研究[J].大庆石油地质与开发,2001,20(6):51-52.
[4]程诗胜,王明才,刘松林.单井CO_2吞吐技术效果评价及工艺认识[J].小型油气藏,2004,9(2):58-59.
[5]李爱芬,陈明强,宋浩鹏等.焖井时间对CO_2吞吐开发低渗透油藏影响机理研究[J].科学技术与工程,2016,16(7):173-175.
[6]董如何,肖必华,方永水.正交设计的理论分析方法及其应用[J].安徽建筑工业学院学报,2004,12(6),103-106.
[7]茆诗松,周纪芗.概率论与数理统计(第二版)[M].北京:中国统计出版社,2000,232-245.
[8]郭会利.多元回归的逐步回归预测模型[J].数学教学与研究,2009,26:92-93.