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1. 发明授权

US07629296B2 Composition and method for thickening heavy aqueous brines with cationic guar 有权
标题翻译：用阳离子瓜尔胶增稠重盐水的组合物和方法
公开(公告)号：US07629296B2
公开(公告)日：2009-12-08
申请号：US11280895
申请日：2005-11-16
申请人： Manilal S. Dahanayake , Subramanian Kesavan , Allwyn Colaco
发明人： Manilal S. Dahanayake , Subramanian Kesavan , Allwyn Colaco
IPC分类号： C08B37/00 , C09K8/08
CPC分类号： C09K8/08 , C09K8/665 , C09K8/68 , C09K8/845 , C09K8/90 , Y10S507/904
摘要： A process of preparing a well servicing fluid comprising viscosifying a heavy brine by contacting with a cationic polysaccharide and a composition thereof.
摘要翻译：一种制备维护良好的流体的方法，包括通过与阳离子多糖及其组合物的接触来稠化浓盐水。

2. 发明申请

US20080200351A1 Method of recycling fracturing fluids using a self-degrading foaming composition 审中-公开
$Method of recycling fracturing fluids using a self-degrading foaming composition$
标题翻译：使用自发降解发泡组合物回收压裂液的方法
公开(公告)号：US20080200351A1
公开(公告)日：2008-08-21
申请号：US12148638
申请日：2008-04-21
申请人： Manilal S. Dahanayake , Subramanian Kesavan , Allwyn Colaco
发明人： Manilal S. Dahanayake , Subramanian Kesavan , Allwyn Colaco
IPC分类号： C09K8/94
CPC分类号： C09K8/703 , C09K8/602 , C09K8/90 , C09K8/94 , E21B43/26
摘要： A method of fracturing a subterranean zone penetrated by a well bore preparing a foamed fracturing fluid containing a self-degrading foaming composition with a mixture of anionic surfactant and nonionic surfactant, and a composition thereof. The fracturing fluid containing self-degrading foaming composition forms a substantially less stable foam when the foamed fracturing fluid is recovered during reclaim.
摘要翻译：一种压裂渗透井眼的地下区域的方法，其制备含有阴离子表面活性剂和非离子表面活性剂的混合物的自降解发泡组合物的发泡压裂液及其组合物。当回收期间回收发泡压裂液时，含有自降解发泡组合物的压裂液形成基本上较不稳定的泡沫。

3. 发明授权

US07404442B2 Method of recycling fracturing fluids using a self-degrading foaming composition 有权
$Method of recycling fracturing fluids using a self-degrading foaming composition$
标题翻译：使用自发降解发泡组合物回收压裂液的方法
公开(公告)号：US07404442B2
公开(公告)日：2008-07-29
申请号：US11399223
申请日：2006-04-06
申请人： Manilal S. Dahanayake , Subramanian Kesavan , Allwyn Colaco
发明人： Manilal S. Dahanayake , Subramanian Kesavan , Allwyn Colaco
IPC分类号： E21B43/26 , E21B43/00
CPC分类号： C09K8/703 , C09K8/602 , C09K8/90 , C09K8/94 , E21B43/26
摘要： A method of fracturing a subterranean zone penetrated by a well bore by preparing a foamed fracturing fluid containing a self-degrading foaming composition comprised of a mixture of anionic surfactant and nonionic surfactant. The fracturing fluid containing a self-degrading foaming composition forms a substantially less stable foam when the foamed fracturing fluid is recovered during reclaim.
摘要翻译：一种通过制备含有由阴离子表面活性剂和非离子表面活性剂的混合物组成的自降解发泡组合物的发泡压裂液压裂井眼穿透的地下区域的方法。当回收期间回收发泡压裂液时，含有自降解发泡组合物的压裂液形成基本上较不稳定的泡沫。

4. 发明授权

US09062238B2 Methods and compositions for viscosifying heavy aqueous brines 有权
标题翻译：粘稠重水盐水的方法和组合物
公开(公告)号：US09062238B2
公开(公告)日：2015-06-23
申请号：US12802368
申请日：2010-06-04
申请人： Subramanian Kesavan , Manilal S. Dahanayake , Gary Woodward
发明人： Subramanian Kesavan , Manilal S. Dahanayake , Gary Woodward
IPC分类号： C09K8/90 , C09K8/08 , C09K8/40 , C09K8/66 , C09K8/68
CPC分类号： C09K8/08 , C09K8/40 , C09K8/665 , C09K8/68 , C09K8/90
摘要： A method for viscosifying brine systems utilized in oilfield applications comprising: a) preparing a heavy brine system comprising obtaining an aqueous brine system comprising a hydrated polysaccharide and at least one multivalent salt, wherein the density of the aqueous brine system is greater than about 10 pounds per gallon (ppg), and adding an effective amount of an alkaline agent, thereby increasing the viscosity of the brine system. Also disclosed are methods for viscosifying brine systems utilized in well servicing applications comprising obtaining an aqueous brine solution comprising at least one multivalent salt, wherein the density of the aqueous brine system is greater than about 10 pounds per gallon (ppg); adding a polysaccharide; adding an effective amount of an acid buffering agent to the brine system to lower the pH of the brine system, whereby the polysaccharide is capable of substantially hydrating into the brine system; and adding an effective amount of an alkaline agent, thereby substantially increasing the viscosity of the brine system.
摘要翻译：一种用于在油田应用中使用的盐水系统的增稠方法，包括：a）制备重盐水系统，其包括获得包含水合多糖和至少一种多价盐的含水盐水系统，其中所述含水盐水系统的密度大于约10磅每加仑（ppg），并加入有效量的碱性试剂，从而提高盐水系统的粘度。还公开了用于在井服务应用中使用的用于增稠盐水系统的方法，包括获得包含至少一种多价盐的盐水水溶液，其中所述含水盐水系统的密度大于约10磅/加仑（ppg）; 加入多糖; 向盐水系统中加入有效量的酸缓冲剂以降低盐水系统的pH，由此多糖能够基本上水合进盐水系统; 并加入有效量的碱性试剂，从而显着提高盐水系统的粘度。

5. 发明申请

US20100311621A1 Methods and compositions for viscosifying heavy aqueous brines 有权
标题翻译：粘稠重水盐水的方法和组合物
公开(公告)号：US20100311621A1
公开(公告)日：2010-12-09
申请号：US12802368
申请日：2010-06-04
申请人： Subramanian Kesavan , Manilal S. Dahanayake , Gary Woodward
发明人： Subramanian Kesavan , Manilal S. Dahanayake , Gary Woodward
IPC分类号： C09K8/68
CPC分类号： C09K8/08 , C09K8/40 , C09K8/665 , C09K8/68 , C09K8/90
摘要： A method for viscosifying brine systems utilized in oilfield applications comprising: a) preparing a heavy brine system comprising obtaining an aqueous brine system comprising a hydrated polysaccharide and at least one multivalent salt, wherein the density of the aqueous brine system is greater than about 10 pounds per gallon (ppg), and adding an effective amount of an alkaline agent, thereby increasing the viscosity of the brine system. Also disclosed are methods for viscosifying brine systems utilized in well servicing applications comprising obtaining an aqueous brine solution comprising at least one multivalent salt, wherein the density of the aqueous brine system is greater than about 10 pounds per gallon (ppg); adding a polysaccharide; adding an effective amount of an acid buffering agent to the brine system to lower the pH of the brine system, whereby the polysaccharide is capable of substantially hydrating into the brine system; and adding an effective amount of an alkaline agent, thereby substantially increasing the viscosity of the brine system.
摘要翻译：一种用于在油田应用中使用的盐水系统的增稠方法，包括：a）制备重盐水系统，其包括获得包含水合多糖和至少一种多价盐的含水盐水系统，其中所述含水盐水系统的密度大于约10磅每加仑（ppg），并加入有效量的碱性试剂，从而提高盐水系统的粘度。还公开了用于在井服务应用中使用的用于增稠盐水系统的方法，包括获得包含至少一种多价盐的盐水水溶液，其中所述含水盐水系统的密度大于约10磅/加仑（ppg）; 加入多糖; 向盐水系统中加入有效量的酸缓冲剂以降低盐水系统的pH，由此多糖能够基本上水合进盐水系统; 并加入有效量的碱性试剂，从而显着提高盐水系统的粘度。

6. 发明申请

US20070111897A1 Composition and method for thickening heavy aqueous brines 有权
标题翻译：用于增稠重盐水的组合物和方法
公开(公告)号：US20070111897A1
公开(公告)日：2007-05-17
申请号：US11280895
申请日：2005-11-16
申请人： Manilal Dahanayake , Subramanian Kesavan , Allwyn Colaco
发明人： Manilal Dahanayake , Subramanian Kesavan , Allwyn Colaco
IPC分类号： C09K8/00 , E21B43/00
CPC分类号： C09K8/08 , C09K8/665 , C09K8/68 , C09K8/845 , C09K8/90 , Y10S507/904
摘要： A process of preparing a well servicing fluid comprising viscosifying a heavy brine by contacting with a cationic polysaccharide and a composition thereof.
摘要翻译：一种制备维护良好的流体的方法，包括通过与阳离子多糖及其组合物的接触来稠化浓盐水。

7. 发明申请

US20060260815A1 Method of recycling fracturing fluids using a self-degrading foaming composition 有权
$Method of recycling fracturing fluids using a self-degrading foaming composition$
标题翻译：使用自发降解发泡组合物回收压裂液的方法
公开(公告)号：US20060260815A1
公开(公告)日：2006-11-23
申请号：US11399223
申请日：2006-04-06
申请人： Manilal Dahanayake , Subramanian Kesavan , Allwyn Colaco
发明人： Manilal Dahanayake , Subramanian Kesavan , Allwyn Colaco
IPC分类号： E21B43/267 , E21B43/26
CPC分类号： C09K8/703 , C09K8/602 , C09K8/90 , C09K8/94 , E21B43/26
摘要： A method of fracturing a subterranean zone penetrated by a well bore by preparing a foamed fracturing fluid containing a self-degrading foaming composition comprised of a mixture of anionic surfactant and nonionic surfactant. The fracturing fluid containing a self-degrading foaming composition forms a substantially less stable foam when the foamed fracturing fluid is recovered during reclaim.
摘要翻译：一种通过制备含有由阴离子表面活性剂和非离子表面活性剂的混合物组成的自降解发泡组合物的发泡压裂液压裂井眼穿透的地下区域的方法。当回收期间回收发泡压裂液时，含有自降解发泡组合物的压裂液形成基本上较不稳定的泡沫。

8. 发明申请

US20080132431A1 Scale squeeze treatment methods and systems 审中-公开
标题翻译：规模挤压治疗方法和系统
公开(公告)号：US20080132431A1
公开(公告)日：2008-06-05
申请号：US11998550
申请日：2007-11-30
申请人： Floryan De Campo , Allwyn Colaco , Subramanian Kesavan
发明人： Floryan De Campo , Allwyn Colaco , Subramanian Kesavan
IPC分类号： C09K8/524
CPC分类号： C09K8/528
摘要： An aqueous composition for treating hydrocarbon wells comprises an aqueous medium, a scale inhibitor, and a guar.
摘要翻译：用于处理烃井的水性组合物包括水性介质，阻垢剂和瓜尔胶。

9. 发明授权

US10323051B2 Methods for controlling depolymerization of polymer compositions 有权
公开(公告)号：US10323051B2
公开(公告)日：2019-06-18
申请号：US13467272
申请日：2012-05-09
申请人： Gary Woodward , Subramanian Kesavan , Adedamola Adedeji , Timothy Curtis
发明人： Gary Woodward , Subramanian Kesavan , Adedamola Adedeji , Timothy Curtis
IPC分类号： C07F9/54 , C09K8/60 , C09K8/68 , A01N25/00 , A01N57/34 , C09K8/035
摘要： A method of controlling or arresting the rate of depolymerization of a polymer composition during a biocide treatment, and use of such methods in oilfield and industrial applications. Also disclosed are methods of preparing a visco-stable application fluid containing a biocide in an amount effective to reduce bacteria count, as well as additive compositions capable of reducing bacteria count in application fluids while maintaining viscosity in such fluids. Also disclosed are methods of preparing biocide-containing application fluids with improved friction reducing properties, as well as related compositions.

10. 发明申请

US20100204068A1 Methods for controlling depolymerization of polymer compositions 有权
标题翻译：控制聚合物组合物解聚的方法
公开(公告)号：US20100204068A1
公开(公告)日：2010-08-12
申请号：US12658653
申请日：2010-02-12
申请人： Subramanian Kesavan , Gary Woodward , Adedamola Adedeji , Timothy Curtis , Francis Smith
发明人： Subramanian Kesavan , Gary Woodward , Adedamola Adedeji , Timothy Curtis , Francis Smith
IPC分类号： C09K8/68 , C07H1/00 , C07C51/42 , C07C233/00 , C08L33/26 , C08B37/00
CPC分类号： C09K8/68 , C08B37/0096 , C09K8/605 , C09K8/88 , Y10S507/92
摘要： A method of controlling or arresting the rate of depolymerization of a polymer composition during a biocide treatment by controlling the pH of the composition, and use of such methods in oilfield applications.
摘要翻译：通过控制组合物的pH控制或阻止聚合物组合物在杀生物剂处理期间的解聚速率的方法，以及在油田应用中使用这些方法。

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