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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0630579 (1990-12-20) |
우선권정보 | FR-0017161 (1989-12-21) |
발명자 / 주소 |
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출원인 / 주소 |
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인용정보 | 피인용 횟수 : 1 인용 특허 : 0 |
For selectively reducing permeability to water in an underground formation producing oil and/or gas, injecting into the formation a composition comprising water, at least one water soluble aldehyde compound at a concentration (by weight) of 180 to 20,000 ppm and at least one non-ionic polysaccharide
A method of selectively reducing permeability to water as opposed to hydrocarbons in an underground formation producing at least one of oil and gas at a temperature of 70°to 130°, consisting essentially of injecting an aqueous composition through an injecting well or a producing well into said under
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