发明名称 |
METHOD AND COMPOSITION FOR SELECTIVELY REDUCING PERMEABILITY TO WATER IN HYDROCARBON RESERVOIRS WHICH ARE HOT AND SALINE |
摘要 |
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 at a concentration (by weight) of 200 to 5000 ppm, the concentration of aldehyde compound being higher than that of polysaccharide. The composition may be used in the water injection well or the hydrocarbon producing well and may assist in the recovery of hydrocarbons.
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申请公布号 |
US5082577(A) |
申请公布日期 |
1992.01.21 |
申请号 |
US19900630579 |
申请日期 |
1990.12.20 |
申请人 |
INSTITUT FRANCAIS DU PETROLE |
发明人 |
KOHLER, NORBERT;ZAITOUN, ALAIN |
分类号 |
C09K8/512;C09K8/514;E21B33/138 |
主分类号 |
C09K8/512 |
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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