利用SAGD开采技术预测重质油藏可采储量新方法  

A New Method of Using SAGD Exploitation Technique to Predict the Recoverable Reserves of Heavy Oil Reservoir

作　　者：陈元千[1] 周游[1] 李秀峦[1] 周翠[1] 韩彬[1] 

机构地区：[1]中国石油勘探开发研究院,北京100083

出　　处：《特种油气藏》2015年第6期85-89,145,共5页Special Oil & Gas Reservoirs

摘　　要：目前,评估SAGD开采重质油藏的可采储量已成为当务之急。预测常规油藏可采储量的动态法包括:物质平衡法、水驱曲线法、产量递减法和预测模型法。其中的产量递减法是预测SAGD开采重质油藏可采储量的重要方法。基于Arps指数递减和双曲线递减,提出了预测SAGD开采单元经济可采储量和技术可采储量的递减常数法和截距除斜率法。通过加拿大阿尔伯塔盆地的Mca Kay river项目SAGD开采实例应用表明,2种方法得到的经济可采储量分别为32.52×10~4、32.22×10~4m^3,技术可采储量分别为32.76×10~4、32.24×10~4m^3,SAGD开采单元的采收率可达68%。该研究为重质油藏可采储量的预测提供了借鉴。For the moment,it has become an urgent affair to assess the recoverable reserves of heavy oil reservoir exploited by SAGD method. The dynamic method used to predict the recoverable reserves of conventional oil reservoir includes material balance,waterflood curve,production decline and prediction model. Among which,production decline is an important method to predict the recoverable reserves of heavy oil reservoir exploited by SAGD method. Based on Arps exponential decline and hyperbolic decline,this paper presented the decline constant and intercept / slope methods used to predict the economically recoverable and technically recoverable reserves of SAGD exploiting block. The SAGD exploitation case of Mca Kay river project in the Alberta Basin,Canada showed that the economically recoverable reserves obtained using these 2 methods were 32. 52 × 10~4m^3 and 32. 22 × 10~4m^3 respectively,technically recoverable reserves were 32. 76 × 10~4m^3 and 32. 24 × 10~4m^3 respectively,and the recovery factor of SAGD exploiting block could reach 68%. This has provided reference for the prediction on the recoverable reserves of heavy oil reservoir.

关 键 词：重质油藏 SAGD开采 可采储量 预测方法 阿尔伯塔盆地 

分 类 号：TE33[石油与天然气工程—油气田开发工程]