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1. 发明申请

US20130292120A1 BIODEGRADABLE ACTIVATORS TO GEL SILICA SOL FOR BLOCKING PERMEABILITY 有权
标题翻译：可生物降解的活化剂凝胶硅胶用于堵塞渗透性
公开(公告)号：US20130292120A1
公开(公告)日：2013-11-07
申请号：US13461516
申请日：2012-05-01
申请人： Prajakta R. Patil , Rajendra A. Kalgaonkar
发明人： Prajakta R. Patil , Rajendra A. Kalgaonkar
IPC分类号： E21B33/13
CPC分类号： E21B33/13 , C09K8/506
摘要： A method of treating a treatment zone in a well to reduce the permeability of the treatment zone including the steps of: introducing into the treatment zone a water-based treatment fluid comprising: an aqueous silica sol; and a water-soluble chemical activator for gelling the silica sol, wherein the chemical activator is selected from the group consisting of: phytic acid, methylglycinediacetic acid, a water-soluble polyepoxysuccinic acid, salicylic acid, ascorbic acid, tannic acid, and an alkali metal salt or ammonium salt of any of the foregoing; and shutting in treatment zone for at least a sufficient time to allow the treatment fluid to in-situ form a solid gel at a design temperature for the method. Alternatively, a first treatment fluid including the aqueous silica sol and a second treatment fluid including the chemical activator can be introduced into the treatment zone separately, in any order.
摘要翻译：一种处理井中的处理区以降低处理区的渗透性的方法，包括以下步骤：向处理区中引入水基处理流体，该水基处理流体包含：水性二氧化硅溶胶; 和用于胶凝二氧化硅溶胶的水溶性化学活化剂，其中化学活化剂选自：植酸，甲基甘氨酸二乙酸，水溶性聚环氧琥珀酸，水杨酸，抗坏血酸，单宁酸和碱上述任何一种的金属盐或铵盐; 并且在处理区域停留至少足够的时间以允许处理流体在该方法的设计温度下原地形成固体凝胶。或者，可以以任何顺序将包含含水硅溶胶的第一处理流体和包括化学活化剂的第二处理流体分别引入处理区。

2. 发明申请

US20130000900A1 DOWN-HOLE PLACEMENT OF WATER-SWELLABLE POLYMERS 审中-公开
标题翻译：水溶性聚合物的下孔放置
公开(公告)号：US20130000900A1
公开(公告)日：2013-01-03
申请号：US13175465
申请日：2011-07-01
申请人： Rajendra A. Kalgaonkar , Anupom Sabhapondit , Antony Stephen Aldridge
发明人： Rajendra A. Kalgaonkar , Anupom Sabhapondit , Antony Stephen Aldridge
IPC分类号： A47B43/00 , C09K8/44
CPC分类号： C09K8/035 , C09K8/36 , C09K8/512
摘要： Methods and fluids are provided for the placement of a water-swellable polymer into a subterranean formation. The methods and fluids include a placement fluid that has an acidic aqueous phase. The water-swellable polymer does not substantially swell in the acidic aqueous phase. The acid is allowed or caused to be spent downhole, whereby the water-swellable polymer can then swell in the formation. In an embodiment, an oil-external emulsion having an internal acidic water phase is provided for placement of a water-swellable polymer into a subterranean formation. Preferably, the oil-external emulsion is adapted to break as the acid contained in the internal water phase is allowed or caused to be spent downhole.
摘要翻译：提供了将水溶胀性聚合物置于地层中的方法和流体。方法和流体包括具有酸性水相的放置液。水溶胀性聚合物在酸性水相中基本上不膨胀。酸被允许或被引入井下，由此水溶胀性聚合物然后可以在地层中膨胀。在一个实施方案中，提供具有内部酸性水相的油外部乳液用于将水溶胀性聚合物置于地层中。优选地，油外部乳液适于断裂，因为内部水相中所含的酸被允许或被引入井下。

3. 发明申请

US20110284225A1 Shear Tolerant Aqueous Based Fracturing Fluids and Methods 有权
标题翻译：剪切耐受水基压裂液和方法
公开(公告)号：US20110284225A1
公开(公告)日：2011-11-24
申请号：US12783715
申请日：2010-05-20
申请人： Paul D. Lord , Ivan Suleiman , John M. Terracina , Rajendra A. Kalgaonkar
发明人： Paul D. Lord , Ivan Suleiman , John M. Terracina , Rajendra A. Kalgaonkar
IPC分类号： E21B43/16 , C09K8/68
CPC分类号： C09K8/685 , C09K8/90
摘要： A method comprises providing a treatment fluid comprising a gelling agent, an aqueous base fluid, a buffer composition comprising a plurality of salts, and a crosslinking agent; and contacting a subterranean formation with the treatment fluid. The method may be used in subterranean formation having a temperature greater than about 200° F., and the treatment fluid useful with the method may have a high shear recovery greater than 100%.
摘要翻译：一种方法包括提供包含胶凝剂，含水基液，包含多种盐的缓冲组合物和交联剂的处理流体; 并使地层与处理流体接触。该方法可以用于具有大于约200°F的温度的地层中，并且用于该方法的处理流体可具有大于100％的高剪切恢复。

4. 发明授权

US09045965B2 Biodegradable activators to gel silica sol for blocking permeability 有权
标题翻译：可生物降解的活化剂凝胶硅溶胶阻隔渗透性
公开(公告)号：US09045965B2
公开(公告)日：2015-06-02
申请号：US13461516
申请日：2012-05-01
申请人： Prajakta R. Patil , Rajendra A. Kalgaonkar
发明人： Prajakta R. Patil , Rajendra A. Kalgaonkar
IPC分类号： E21B43/22 , E21B33/13 , C09K8/506
CPC分类号： E21B33/13 , C09K8/506
摘要： A method of treating a treatment zone in a well to reduce the permeability of the treatment zone including the steps of: introducing into the treatment zone a water-based treatment fluid comprising: an aqueous silica sol; and a water-soluble chemical activator for gelling the silica sol, wherein the chemical activator is selected from the group consisting of: phytic acid, methylglycinediacetic acid, a water-soluble polyepoxysuccinic acid, salicylic acid, ascorbic acid, tannic acid, and an alkali metal salt or ammonium salt of any of the foregoing; and shutting in treatment zone for at least a sufficient time to allow the treatment fluid to in-situ form a solid gel at a design temperature for the method. Alternatively, a first treatment fluid including the aqueous silica sol and a second treatment fluid including the chemical activator can be introduced into the treatment zone separately, in any order.
摘要翻译：一种处理井中的处理区以降低处理区的渗透性的方法，包括以下步骤：向处理区中引入水基处理流体，该水基处理流体包含：水性二氧化硅溶胶; 和用于胶凝二氧化硅溶胶的水溶性化学活化剂，其中化学活化剂选自：植酸，甲基甘氨酸二乙酸，水溶性聚环氧琥珀酸，水杨酸，抗坏血酸，单宁酸和碱上述任何一种的金属盐或铵盐; 并且在处理区域停留至少足够的时间以允许处理流体在该方法的设计温度下原地形成固体凝胶。或者，可以以任何顺序将包含含水硅溶胶的第一处理流体和包含化学活化剂的第二处理流体分别引入处理区。

5. 发明授权

US08408301B2 Shear tolerant aqueous based fracturing fluids and methods 有权
$Shear tolerant aqueous based fracturing fluids and methods$
标题翻译：剪切耐水水性压裂液和方法
公开(公告)号：US08408301B2
公开(公告)日：2013-04-02
申请号：US12783715
申请日：2010-05-20
申请人： Paul D. Lord , Ivan Suleiman , John M. Terracina , Rajendra A. Kalgaonkar
发明人： Paul D. Lord , Ivan Suleiman , John M. Terracina , Rajendra A. Kalgaonkar
IPC分类号： E21B43/22 , E21B43/26 , C09K8/62 , C09K8/90
CPC分类号： C09K8/685 , C09K8/90
摘要： A method comprises providing a treatment fluid comprising a gelling agent, an aqueous base fluid, a buffer composition comprising a plurality of salts, and a crosslinking agent; and contacting a subterranean formation with the treatment fluid. The aqueous base fluid is preferably seawater and the buffer composition includes one or more salts present in the treatment fluid from about 1 to about 1000 pounds per gallon of treatment fluid.
摘要翻译：一种方法包括提供包含胶凝剂，含水基液，包含多种盐的缓冲组合物和交联剂的处理流体; 并使地层与处理流体接触。碱性水溶液优选为海水，并且缓冲剂组合物包含处理流体中存在的一种或多种盐，每加仑处理流体约1至约1000磅。

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