发明名称 |
LIGNOSULFONATE-ACRYLIC ACID GRAFT COPOLYMERS AS SACRIFICIAL AGENTS FOR CARBON DIOXIDE FOAMING ABENTS |
摘要 |
The invention is a method for improving conformance during a carbon dioxide foam flood, which comprises injecting into the formation an aqueous solution of about 0.05% to about 5% by weight of a carbon dioxide foaming surfactant, and about 0.05% to about 5% by weight of a lignosulfonate-acrylic acid graft copolymer having about 2% to about 70% by weight of acrylic acid, and injecting into the formation carbon dioxide to sweep the hydrocarbons towards a production well for recovery.
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申请公布号 |
CA2185499(A1) |
申请公布日期 |
1997.05.28 |
申请号 |
CA19962185499 |
申请日期 |
1996.09.13 |
申请人 |
TEXACO DEVELOPMENT CORPORATION |
发明人 |
KALFOGLOU, GEORGE;PRIEDITIS, JOHN;PAULETT, GROVER STARR |
分类号 |
E21B43/22;(IPC1-7):E21B43/22 |
主分类号 |
E21B43/22 |
代理机构 |
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地址 |
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