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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0137205 (1987-12-23) |
우선권정보 | DE-3644386 (1986-12-24) |
발명자 / 주소 |
|
출원인 / 주소 |
|
인용정보 | 피인용 횟수 : 9 인용 특허 : 14 |
Oil is recovered from a subsurface reservoir by surfactants. Surfactant flooding is accomplished especially in reservoirs with marked temperature fluctuations or a temperature gradient which are normally problematic since a soluble surfactant efffective for oil mobilization does not retain these pro
A process for the recovery of oil from a subsurface reservoir which is penetrated by at least one injection well and one production well comprising injecting therein, through the injection well, effective amounts of a solution or dispersion of a mixture comprising (a) 10-100% of a carboxymethylated
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