发明申请
US20040157749A1 Method for reducing permeability restriction near wellbore 失效
降低井筒附近渗透率限制的方法

  • 专利标题: Method for reducing permeability restriction near wellbore
  • 专利标题(中): 降低井筒附近渗透率限制的方法
  • 申请号: US10364717
    申请日: 2003-02-11
  • 公开(公告)号: US20040157749A1
    公开(公告)日: 2004-08-12
  • 发明人: John W. ElyBradley C. WoltersWilliam D. McCain
  • 主分类号: E21B043/00
  • IPC分类号: E21B043/00
Method for reducing permeability restriction near wellbore
摘要:
Method is provided for increasing the productivity of gas wells producing from reservoirs where retrograde condensation occurs around the wells. An oil-wetting surfactant is injected in a solvent to oil wet the formation for a selected distance around a well or a hydraulic fracture intersecting the well. A pre-flush liquid, such as carbon dioxide, alcohol or similar products and mixtures thereof, may be used to reduce water saturation before injection of the surfactant. The method may also be applied to increase the productivity of oil wells producing from reservoirs where breakout of solution gas occurs near the well.
公开/授权文献
信息查询
0/0