摘要
针对蒸汽驱中的重力超覆现象,提出采用楔状复合油藏模型来模拟倾斜蒸汽前缘建立考虑热损失的数学模型,通过拉普拉斯变换,得到两区复合油藏井底压力在拉氏空间的解。经过Stehfest反演得到在实空间的解,并作出样板曲线,研究内外区流度比、倾斜角度、热损失对样板曲线形状的影响。
Aimed at Gravity Override in a steam- injection processes, a well test analysis model of wedge - shaped compound reservoir is set up to simulate to slant steam front. The mathematical model considering heat loss is given and solved by Laplace transformation, then stehfest algorithm is used to obtain dismentionless wellbore pressure. The influence of the parameter on the dismentionless wellbore pressure is discussed, such as slant angle, heat loss, and mobility ratio.
出处
《西南石油学院学报》
CAS
CSCD
北大核心
2006年第2期52-55,共4页
Journal of Southwest Petroleum Institute
关键词
重力超覆
复合油藏
试井分析
拉氏变化
数值反演
Gravity Override
compound reservoir
welltest analysis
Laplace transformation
stehfest algorithm
