发明名称 |
IN SITU SWELLING OF WATER-SWELLABLE POLYMERS DOWNHOLE |
摘要 |
Invert emulsions may be used in downhole operations to delay the swelling of water-swellable polymers. For example, a treatment fluid may be introduced into a wellbore penetrating a subterranean formation, the treatment fluid comprising an emulsion with an continuous oil phase and a discontinuous aqueous phase, an emulsifier, and a water-swellable polymer suspended in the continuous oil phase, wherein the aqueous discontinuous phase has a pH of about 0 to about 11; the emulsion may be broken while the treatment fluid in a portion of the subterranean formation; and the water-swellable polymer may be swollen into a swollen polymer, thereby reducing fluid flow through the portion of the subterranean formation. In some instances, for carbonate subterranean formation, the aqueous discontinuous phase may have a pH of about 7 to about 11. |
申请公布号 |
WO2016137455(A1) |
申请公布日期 |
2016.09.01 |
申请号 |
WO2015US17452 |
申请日期 |
2015.02.25 |
申请人 |
HALLIBURTON ENERGY SERVICES, INC. |
发明人 |
BHAMIDIPATI, Venkata, Satya, Srikalyan;OLIVEIRA, Humberto, Almeida;LU, Zheng |
分类号 |
C09K8/02;C09K8/80 |
主分类号 |
C09K8/02 |
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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