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1. 发明授权

US07148184B2 Self-diverting foamed system 有权
标题翻译：自发泡沫系统
公开(公告)号：US07148184B2
公开(公告)日：2006-12-12
申请号：US10649055
申请日：2003-08-27
申请人： Pia-Angela Francini , Keng Chan , Mark Brady , Christopher Fredd
发明人： Pia-Angela Francini , Keng Chan , Mark Brady , Christopher Fredd
IPC分类号： C09K8/78 , E21B43/16
CPC分类号： C09K8/72 , C09K2208/30 , Y10S507/933
摘要： A method is given for diverting acids in matrix acidizing and acid fracturing. The acids are diverted with a diverting agent that is an energized or foamed acidic viscoelastic surfactant system that contains a viscoelastic surfactant that gels and increases in viscosity when the acid in the foamed acidic viscoelastic surfactant system is spent. The method provides a synergistic combination of the diverting capabilities of foams and the diverting capabilities of viscoelastic gel systems. The resistance to flow of the gelled foamed viscoelastic surfactant system is greater than expected from a foam or a viscoelastic gel system alone.
摘要翻译：给出了在基质酸化和酸性压裂中转移酸的方法。酸被转移剂转移，其是带电或发泡的酸性粘弹性表面活性剂体系，其包含粘弹性表面活性剂，当发泡酸性粘弹性表面活性剂体系中的酸被消耗时，其粘度增加并增加粘度。该方法提供了泡沫的转移能力和粘弹性凝胶体系的转移能力的协同组合。胶凝发泡粘弹性表面活性剂体系的抗流动性比单独的泡沫或粘弹性凝胶体系大大超过预期。

2. 发明申请

US20050020454A1 Self-diverting foamed system 有权
标题翻译：自发泡沫系统
公开(公告)号：US20050020454A1
公开(公告)日：2005-01-27
申请号：US10649055
申请日：2003-08-27
申请人： Pia-Angela Francini , Keng Chan , Mark Brady , Christopher Fredd
发明人： Pia-Angela Francini , Keng Chan , Mark Brady , Christopher Fredd
IPC分类号： C09K8/72 , E21B43/00 , E21B43/27
CPC分类号： C09K8/72 , C09K2208/30 , Y10S507/933
摘要： A method is given for diverting acids in matrix acidizing and acid fracturing. The acids are diverted with a diverting agent that is an energized or foamed acidic viscoelastic surfactant system that contains a viscoelastic surfactant that gels and increases in viscosity when the acid in the foamed acidic viscoelastic surfactant system is spent. The method provides a synergistic combination of the diverting capabilities of foams and the diverting capabilities of viscoelastic gel systems. The resistance to flow of the gelled foamed viscoelastic surfactant system is greater than expected from a foam or a viscoelastic gel system alone.
摘要翻译：给出了在基质酸化和酸性压裂中转移酸的方法。酸被转移剂转移，其是带电或发泡的酸性粘弹性表面活性剂体系，其包含粘弹性表面活性剂，当发泡酸性粘弹性表面活性剂体系中的酸被消耗时，其粘度增加并增加粘度。该方法提供了泡沫的转移能力和粘弹性凝胶体系的转移能力的协同组合。胶凝发泡粘弹性表面活性剂体系的抗流动性比单独的泡沫或粘弹性凝胶体系大大超过预期。

3. 发明授权

US07318475B2 Matrix acidizing high permeability contrast formations 有权
标题翻译：基质酸化高渗透性对比层
公开(公告)号：US07318475B2
公开(公告)日：2008-01-15
申请号：US11198422
申请日：2005-08-05
申请人： Gustavo Cavazzoli , Juan Gabriel Blanco , J. Ernest Brown , Pia-Angela Francini , Diankui Fu
发明人： Gustavo Cavazzoli , Juan Gabriel Blanco , J. Ernest Brown , Pia-Angela Francini , Diankui Fu
IPC分类号： E21B43/27
CPC分类号： E21B43/26 , C09K8/74 , C09K2208/30 , E21B43/14 , Y10S507/933
摘要： A method for stimulating thick or multilayered heterogeneous or homogeneous formations in a single trip without packers involves perforating with tubing conveyed perforation, then injecting a self-diverting acid, then moving the tubing string and perforating at a new location, and then injecting additional self-diverting acid. The sequence may be repeated. The acid is preferably a viscoelastic diverting acid. The self-diverting acid may be alternated with conventional treatment fluid. The job is designed to treat the least permeable zone(s) first and maximizes acid efficiency.
摘要翻译：在没有封隔器的情况下在单次行程中刺激厚层或多层异质或均匀地层的方法包括用输送穿孔的管道穿孔，然后注入自转向酸，然后移动管柱并在新位置穿孔，转移酸可以重复该顺序。酸优选为粘弹性转移酸。自转向酸可以与常规处理液交替。该工作旨在首先处理最不透水的区域，并最大限度地提高酸的效率。

4. 发明申请

US20060000609A1 Matrix acidizing high permeability contrast formations 有权
标题翻译：基质酸化高渗透性对比层
公开(公告)号：US20060000609A1
公开(公告)日：2006-01-05
申请号：US11198422
申请日：2005-08-05
申请人： Gustavo Cavazzoli , Juan Blanco , J. Brown , Pia-Angela Francini , Diankui Fu
发明人： Gustavo Cavazzoli , Juan Blanco , J. Brown , Pia-Angela Francini , Diankui Fu
IPC分类号： E21B43/267
CPC分类号： E21B43/26 , C09K8/74 , C09K2208/30 , E21B43/14 , Y10S507/933
摘要： A method for stimulating thick or multilayered heterogeneous or homogeneous formations in a single trip without packers involves perforating with tubing conveyed perforation, then injecting a self-diverting acid, then moving the tubing string and perforating at a new location, and then injecting additional self-diverting acid. The sequence may be repeated. The acid is preferably a viscoelastic diverting acid. The self-diverting acid may be alternated with conventional treatment fluid. The job is designed to treat the least permeable zone(s) first and maximizes acid efficiency.
摘要翻译：在没有封隔器的情况下在单次行程中刺激厚层或多层异质或均匀地层的方法包括用输送穿孔的管道穿孔，然后注入自转向酸，然后移动管柱并在新位置穿孔，转移酸可以重复该顺序。酸优选为粘弹性转移酸。自转向酸可以与常规处理液交替。该工作旨在首先处理最不透水的区域，并最大限度地提高酸的效率。

5. 发明授权

US07008908B2 Selective stimulation with selective water reduction 有权
标题翻译：选择性减水的选择性刺激
公开(公告)号：US07008908B2
公开(公告)日：2006-03-07
申请号：US10302075
申请日：2002-11-22
申请人： Keng Seng Chan , Pia-Angela Francini
发明人： Keng Seng Chan , Pia-Angela Francini
IPC分类号： E21B33/13 , C09K3/00
CPC分类号： C09K8/88 , C09K8/602 , C09K8/74 , C09K2208/30
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.
摘要翻译：一种用于优先处理具有至少一个主要产油层和至少一个主要产水层的地层的方法。该方法包括以下步骤：向地层提供截水凝胶以优先处理水生产层。随后将粘弹性流体提供到地层中，其中粘弹性流体被烃破坏，从而主要在水生产层中保留和增粘。最后，提供反应性流体，例如酸性流体。反应性流体主要处理油产生层，因为粘弹性流体和水截止凝胶防止反应流体基本上进入产水层。

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