发明授权
- 专利标题: Carbon dioxide foamed fluids
- 专利标题(中): 二氧化碳发泡流体
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申请号: US10860855申请日: 2004-06-04
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公开(公告)号: US07291651B2公开(公告)日: 2007-11-06
- 发明人: Yiyan Chen , Jesse Lee , Timothy L. Pope
- 申请人: Yiyan Chen , Jesse Lee , Timothy L. Pope
- 申请人地址: US TX Sugarland
- 专利权人: Schlumberger Technology Corporation
- 当前专利权人: Schlumberger Technology Corporation
- 当前专利权人地址: US TX Sugarland
- 代理商 Darla Fonseca; David Cate; Robin Nava
- 主分类号: B01F3/04
- IPC分类号: B01F3/04 ; B01F17/36 ; C09K8/60 ; E21B21/00 ; E21B43/22
摘要:
An aqueous viscoelastic surfactant (VES) fluid foamed or energized with carbon dioxide, in which the VES is more compatible with the carbon dioxide, is made by the addition of one or more than one synergistic co-surfactant. The synergist co-surfactant includes quaternary amines and ethoxylated carboxylates having a hydrophobic chain shorter than the hydrophobic chain of the VES. Improved compatibility is evidenced for a given surfactant concentration either by formation and maintenance of a foam under conditions at which the foam could not otherwise have been formed or maintained, or by either higher viscosity of the foamed fluid at a given temperature or longer foam life at a given temperature or a higher temperature at which useful fluid viscosity can be generated or maintained for a useful time. The aqueous carbon dioxide foamed fluids may be used in acidizing, acid fracturing, gravel packing, diversion, and well cleanout.
公开/授权文献
- US20050124500A1 Carbon dioxide foamed fluids 公开/授权日:2005-06-09