发明名称 |
TILL GEL BRINGADE VATTENHALTIGA BLANDNINGAR. |
摘要 |
Disclosed are gelled aqueous compositions having (1)(a) a water thickening amount of an anionic or nonionic water soluble polymer in fresh water or brine solutions at a pH of greater than 10; (b) a water thickening amount of an anionic water soluble polymer having carboxylate functionality and a cellulose backbone in brine solutions at an acidic pH; or (c) a water thickening amount of (i) an anionic water soluble polymer having carboxylate functionality and a cellulose backbone or (ii) a copolymer of sodium acrylate having from about 10% to about 90% acrylate content, in brine solutions at neutral to about 10 pH; and (2) a water soluble cationic poly(diallylamine)-epichlorohydrin resin in an amount sufficient to cause gelation and form the gelled composition. The compositions are useful in the recovery of oil and gas by fracturing and as a matrix plugging agent in enhanced oil recovery. |
申请公布号 |
FI86879(B) |
申请公布日期 |
1992.07.15 |
申请号 |
FI19850003361 |
申请日期 |
1985.09.02 |
申请人 |
HERCULES INCORPORATED |
发明人 |
LUKACH, CARL ANDREW;SUN, SHAO-TANG |
分类号 |
C09K8/508;C09K8/62;C09K8/88 |
主分类号 |
C09K8/508 |
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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