发明名称 |
Method of Acidizing a Subterranean Formation with Diverting Foam or Fluid |
摘要 |
A method of acidizing a subterranean formation with a diverting agent composed of a gelled or thickened viscoelastic foam or fluid generated from (i.) an amidoamine oxide gelling agent and (ii.) an acid or foam, water and/or brine. The gelled or thickened foam or fluid may be generated in-situ or introduced directly into the formation by mixing of the amidoamine oxide gelling agent and acid or foam, water and/or brine. As the acid spends, the acidizing fluid thickens. When the acid is further spent, the fluid viscosity declines eventually returning to a low viscosity state, allowing for easy cleanup. The process allows for selective acidizing of less permeable zones of the formation and more uniform stimulation of the hydrocarbon bearing formation.
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申请公布号 |
US2008121398(A1) |
申请公布日期 |
2008.05.29 |
申请号 |
US20070947473 |
申请日期 |
2007.11.29 |
申请人 |
CAWIEZEL KAY E;DAWSON JEFFREY C |
发明人 |
CAWIEZEL KAY E.;DAWSON JEFFREY C. |
分类号 |
E21B43/16;C09K8/72;C09K8/74;E21B43/22;E21B43/25;E21B43/27;E21B43/28 |
主分类号 |
E21B43/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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