摘要
根据等值渗流阻力原理推导了凝析油膜对储层渗透率的影响关系,并在此基础上,运用气体稳定渗流力学理论,建立存在油膜情况下的气井产能计算公式,并将之运用到实际井的生产资料上进行计算。计算结果表明,凝析液析出后附着在孔隙表面上形成油膜,油膜的厚度不同对气井产能也有不同的影响。此项研究对正确认识凝析气井的产能变化提供了依据,也对正确指导凝析气井的生产具有重要意义。
Equivalent principle of gas through porous media is used to deduce the influence of gas condensate film on reservoir permeability.On this basis,the theory of gas steady seepage is used to establish gas well deliverability equation in the situation of oil film existence.The equation has been used in practical well data for calculation.The result shows that gas condensate will adhere on pore surface as oil film,which has different influence on gas well deliverability depending on its thickness.This study provides basis for understanding the change of gas well deliverability and is of significance to condensate gas production.
出处
《特种油气藏》
CAS
CSCD
2006年第5期68-70,共3页
Special Oil & Gas Reservoirs
基金
973国家重大基础研究项目(项目编号2001-CB-209-108)
国家自然科学基金项目(项目编号50574079)资助
关键词
凝析油膜
渗透率
产能计算公式
油膜厚度
影响
gas condensate film
permeability
deliverability calculation
film thickness
influence
