发明名称 |
METHOD FOR TREATING SUBTERRANEAN FORMATION PROVIDING SELECTIVE STIMULATION OF OIL INFLOW AND SELECTIVE REDUCTION OF WATER INFLOW |
摘要 |
A method for preferentially treating a subterranean formation having at least one primarily oil producing layer and at least one primarily water producing layer. The method involves the steps of providing a water shut-off gel into the formation to preferentially treat the water producing layers. This is followed by providing a viscoelastic fluid into the formation, where the viscoelastic fluid is broken by hydrocarbon, thereby remaining and viscosifying primarily in the water producing layers. Finally, a reactive fluid, such as an acid fluid, is provided. The reactive fluid treats primarily the oil producing layers because the viscoelastic fluid and the water shut-off gel prevent the reactive fluid from substantially entering the water producing layers. |
申请公布号 |
EA006568(B1) |
申请公布日期 |
2006.02.24 |
申请号 |
EA20050000857 |
申请日期 |
2003.11.13 |
申请人 |
SCHLUMBERGER TECHNOLOGY B.V. |
发明人 |
CHAN KENG, SENG;FRANCINI PIA-ANGELA |
分类号 |
C09K8/60;C09K8/74;C09K8/88 |
主分类号 |
C09K8/60 |
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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