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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0629355 (1975-11-06) |
발명자 / 주소 |
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출원인 / 주소 |
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인용정보 | 피인용 횟수 : 39 인용 특허 : 0 |
A process is provided for reducing water production in production oil wells or for altering the water permeability profile of injection wells that have been previously treated with partially gelled or ungelled polymer and from which oil has been produced for a period of time subsequent to the treatm
A method for retreating a subterranean formation penetrated by at least one well bore, said formation having been previously treated by partially gelled or ungelled polymer and thereafter returned to production, said method comprising: a. injecting into the formation a crosslinking ionic solution ca
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