发明申请
- 专利标题: Aqueous Two-Phase Emulsion Gel Systems for Zone Isolation
- 专利标题(中): 用于区域隔离的水性两相乳液凝胶体系
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申请号: US11944681申请日: 2007-11-26
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公开(公告)号: US20090133868A1公开(公告)日: 2009-05-28
- 发明人: Philip F. Sullivan , Gary John Tustin , Yenny Christanti , Gregory Kubala , Bruno Drochon , Trevor LLoyd Hughes
- 申请人: Philip F. Sullivan , Gary John Tustin , Yenny Christanti , Gregory Kubala , Bruno Drochon , Trevor LLoyd Hughes
- 主分类号: E21B33/124
- IPC分类号: E21B33/124
摘要:
A low viscosity wellbore polymer fluid gelling system comprising an aqueous medium and a water-in-water emulsion comprising a plurality of polymers or oligomers, including at least one removable polymer or oligomer, and at least one gelling polymer or oligomer, wherein said fluid has a low viscosity when injected, and the gelling polymer forms a gel downhole which has a storage modulus of at least about 60 Pa after the removable polymer is removed from the fluid. The invention also provides a method of isolating at least one zone of a subterranean formation penetrated by a wellbore, including the steps of preparing a water-in-water emulsion comprising a plurality of polymers or oligomers including at least one removable polymer or oligomer, and at least one gellable polymer or oligomer; combining the water-in-water emulsion with an aqueous medium to prepare a low viscosity polymer fluid; introducing the fluid into a zone in the formation, removing the at least one removable polymer or oligomer, and allowing a remaining gellable oligomer, polymer or polymers to form a gel, isolating the zone from at least one other zone in the formation.
公开/授权文献
- US07703527B2 Aqueous two-phase emulsion gel systems for zone isolation 公开/授权日:2010-04-27
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