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1. 发明申请

US20090023617A1 Friction reducer performance by complexing multivalent ions in water 有权
标题翻译：通过在水中络合多价离子来减少摩擦磨损性能
公开(公告)号：US20090023617A1
公开(公告)日：2009-01-22
申请号：US11879423
申请日：2007-07-17
申请人： David E. McMechan , Rob E. Hanes, JR. , Ian D. Robb , Thomas D. Welton , Karen L. King , Bobby J. King , Jiten Chatterji
发明人： David E. McMechan , Rob E. Hanes, JR. , Ian D. Robb , Thomas D. Welton , Karen L. King , Bobby J. King , Jiten Chatterji
IPC分类号： C09K8/60
CPC分类号： C09K8/12 , C09K8/68 , C09K8/74 , C09K8/882 , C09K2208/28
摘要： Embodiments relate to improving the performance of anionic friction reducing polymers in water containing multivalent ions. Exemplary embodiments relate to methods of improving the performance of anionic friction reducing polymers in a subterranean treatment, wherein the method comprises adding a complexing agent to water comprising multivalent ions. The method comprises adding the anionic friction reducing polymer to the water comprising the multivalent ions, wherein the anionic friction reducing polymer is added in an amount less than or equal to about 0.15% by weight of the water. The method comprises introducing the water comprising the multivalent ions, the complexing agent and the anionic friction reducing polymer into at least a portion of the subterranean formation such that the friction reducing polymer reduces energy loss due to turbulence in the water. The complexing agent complexes with at least a portion of the multivalent ions in the water such that the reduction of energy loss by the friction reducing polymer is improved.
摘要翻译：实施方案涉及改善含多价离子的水中阴离子减摩聚合物的性能。示例性实施方案涉及改进地下处理中阴离子减摩聚合物的性能的方法，其中所述方法包括向包含多价离子的水中加入络合剂。该方法包括将阴离子摩擦降低聚合物加入到包含多价离子的水中，其中以少于或等于约0.15重量％的量加入阴离子摩擦降低聚合物。该方法包括将包含多价离子的水，络合剂和阴离子摩擦降低聚合物引入地层的至少一部分中，使得摩擦降低聚合物降低由于水中湍流引起的能量损失。络合剂与水中的多价离子的至少一部分复合，从而提高了降低摩擦降低聚合物的能量损失。

2. 发明授权

US07579302B2 Friction reducer performance by complexing multivalent ions in water 有权
公开(公告)号：US07579302B2
公开(公告)日：2009-08-25
申请号：US11879423
申请日：2007-07-17
申请人： David E. McMechan , Rob E. Hanes, Jr. , Ian D. Robb , Thomas D. Welton , Karen L. King , Bobby J. King , Jiten Chatterji
发明人： David E. McMechan , Rob E. Hanes, Jr. , Ian D. Robb , Thomas D. Welton , Karen L. King , Bobby J. King , Jiten Chatterji
IPC分类号： C09K8/588 , E21B43/26
CPC分类号： C09K8/12 , C09K8/68 , C09K8/74 , C09K8/882 , C09K2208/28
摘要： Embodiments relate to improving the performance of anionic friction reducing polymers in water containing multivalent ions. Exemplary embodiments relate to methods of improving the performance of anionic friction reducing polymers in a subterranean treatment, wherein the method comprises adding a complexing agent to water comprising multivalent ions. The method comprises adding the anionic friction reducing polymer to the water comprising the multivalent ions, wherein the anionic friction reducing polymer is added in an amount less than or equal to about 0.15% by weight of the water. The method comprises introducing the water comprising the multivalent ions, the complexing agent and the anionic friction reducing polymer into at least a portion of the subterranean formation such that the friction reducing polymer reduces energy loss due to turbulence in the water. The complexing agent complexes with at least a portion of the multivalent ions in the water such that the reduction of energy loss by the friction reducing polymer is improved.

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