摘要
因渗透率低、压力传播速度较慢,低渗透油气藏压力恢复曲线不易出现进行流动段,造成试井测试周期较长,成功率较低。从续流效应、褶积分析、井储校正、经验公式等多种方法对MDH和Horner方程进行变形,获得了低渗透油气藏早期试井分析方法的基本原理及可靠性,取得了较好的拟合效果。研究结果对合理解释低渗透油气藏试井测试资料有一定的指导作用。
Pressure build-up curve was not easily appeared as linear flow because of low permeability and slow pressure propagation velocity,by which a long test period and low success ratio were induced.Based on afterflow effect,convolution analysis,wellbore storage calibration and some empirical formulae,the MDH and Horner equations were deformed,the fundamental principles of early well test interpretation methods in low permeability reservoirs and good fitting results were obtained.It provides a guidance for correctly explaining the well test data in low permeability reservoirs.
出处
《石油天然气学报》
CAS
CSCD
北大核心
2010年第3期290-294,417,共5页
Journal of Oil and Gas Technology
基金
教育部博士学科点新教师类基金项目(20095122120012)
关键词
低渗透
早期试井
井储校正
续流效应
low permeability
early well test
wellbore storage calibration
afterflow effect
