无因次参数对稠油热采试井三区典型曲线影响研究

根据稠油注汽井近井地带温度分布特点，建立三区热采试井的数学模型。目的研究无因次参数对稠油热采试井三区典型曲线的影响。结果流度比λ１主要影响第二平台和第一平台的相对高度；流度比λ２主要影响第三平台和第二平台的相对高度；扩散比η１主要影响第二平台之前是否出现波峰；扩散比η２主要影响第三平台之前是否出现波峰；无因次内区半径Ａ１主要影响第一平台持续时间和第二平台出现的时间；无因次过渡区半径Ａ２主要影响第二平台持续时间和第三平台出现的时间；ＣＤｅ２ｓ主要影响井筒储集引起的波峰和第一平台持续时间。结论无因次参数对三区典型曲线有显著影响。

The influence of dimentionless parameter on the typical curve of heavy oil thermal recovery well test for three area.

MethodMathematical model of thermal recovery well test of three areas are established based upon the temperature distribution characteritics near the steam injection well. PurposeTo study the influence of the dimentionless parameters on the typical curve of heavy oil thermal recovery well test.ResultMobility ratio \-1 mainly influences the relative height of No.2 platform and No. 1 platform. Mobility ratio \-2 mainly influences the relative height of No.3 platform and No. 2 platform. Dispersion ratio 1 mainly influences whether wave peak occurs before No.2 platform. Dispersion ratio \-2 mainly influences whether wave peak occurs before No.3 platform. The radius A 1 within the dimentionless area mainly influences the lasting period of No.1 platform and the occurring time of No.2 platform. The radius A 2 within the dimentionless transition area mainly influences the lasting period of No.2 platform and the occurring time of No. 3 platform. C \-De\ \{2 s \} mainly influences the wave peak caused by wellbore storage as well as the lasting time of No.1 platform.ConclusionDimentionless parameters have profound influence on the typical curve of the three areas.