| 发明名称 |
COMPOSITION FOR LEVELING INJECTIVITY PROFILE OF INJECTION WELLS, REDUCING WATERING, AND INCREASING OIL RECOVERY |
| 摘要 |
FIELD: oil and gas production. SUBSTANCE: composition contains 0.005-0.1 wt % exopolysaccaride synthesized by Azotobacter vinelandii, 0.1-5.0 wt % starch, and water, the balance. EFFECT: increased filtration resistance and leveled injection profile. |
| 申请公布号 |
RU94042120(A) |
申请公布日期 |
1997.05.27 |
| 申请号 |
RU19940042120 |
申请日期 |
1994.11.28 |
| 申请人 |
NAUCHNO-TEKHNICHESKOE OB"EDINENIE "ITIN" |
发明人 |
KRASNOPEVTSEVA N.V.;POLISHCHUK A.M.;VLASOV S.A.;KOGAN JA.M.;KONDRATJUK A.T.;LEMESHKO N.N. |
| 分类号 |
C09K8/44;E21B33/138;C09K8/588 |
主分类号 |
C09K8/44 |
| 代理机构 |
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代理人 |
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