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公开(公告)号：US4624795A
公开(公告)日：1986-11-25
申请号：US717208
申请日：1985-03-28
CPC分类号： C09K8/74 , C09K8/76 , Y10S507/903 , Y10S507/92 , Y10S507/923
摘要： Copolymers of a predominant proportion of an olefinically unsaturated sulfonic acid, an acrylamide, a vinyl phosphonic acid, and optionally other copolymerizable vinyl monomers, form aqueous acid gel compositions when added to the aqueous acid along with a gelling agent selected from titanium or zirconium compounds, and retarded gel destabilizing compounds containing fluoride, sulphate or phosphate anions, the apparent viscosity and time of stability of the acid gel composition being controlled by the addition of these essential ingredients.
摘要翻译： 当主要比例的烯属不饱和磺酸，丙烯酰胺，乙烯基膦酸和任选的其它可共聚的乙烯基单体的共聚物当与选自钛或锆化合物的胶凝剂一起加入酸水溶液中时形成含水酸性凝胶组合物， 和含有氟化物，硫酸盐或磷酸盐阴离子的延迟凝胶去稳定化合物，通过加入这些必需成分来控制酸性凝胶组合物的表观粘度和稳定时间。
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公开(公告)号：US08895480B2
公开(公告)日：2014-11-25
申请号：US11144567
申请日：2005-06-03
申请人： Jeffrey C. Dawson , Hoang Van Le
发明人： Jeffrey C. Dawson , Hoang Van Le
CPC分类号： E21B43/26 , C09K8/685 , C09K8/887 , C09K2208/26 , E21B43/267
摘要： A well fracturing fluid is shown which includes an aqueous base fluid, a hydratable polymer, such as a guar gum, and a suitable crosslinking agent for crosslinking the hydratable polymer to form a polymer gel. The hydratable polymer has a higher molecular weight which is achieved by improvements in the processing of the guar split. The higher molecular weight polymer provides improved performance in well fracturing operations.
摘要翻译： 示出了一种井压裂流体，其包括水性基础流体，可水合的聚合物，例如瓜尔胶，以及用于交联可水合聚合物以形成聚合物凝胶的合适的交联剂。 可水合聚合物具有较高的分子量，其通过改进瓜尔胶的加工来实现。 较高分子量聚合物在井压裂操作中提供了改进的性能。
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公开(公告)号：US08022015B2
公开(公告)日：2011-09-20
申请号：US12020671
申请日：2008-01-28
申请人： Paul S. Carman , Jeffrey C. Dawson
发明人： Paul S. Carman , Jeffrey C. Dawson
摘要： Compositions and methods of treating high temperature subterranean formations of up to about 500° F. (260° C.) are provided. The compositions and methods utilize a high molecular weight synthetic copolymer and a pH buffer than maintains a pH in a range of about 4.5 to about 5.25 for the compositions. The high molecular weight synthetic copolymer is derived from acrylamide, acrylamidomethylpropanesulfonic acid, and vinyl phosphonate.
摘要翻译： 提供了处理高达约500°F（260℃）的高温地下地层的组合物和方法。 组合物和方法使用高分子量合成共聚物和pH缓冲剂，而不是将组合物的pH保持在约4.5至约5.25的范围内。 高分子量合成共聚物衍生自丙烯酰胺，丙烯酰胺基甲基丙磺酸和乙烯基膦酸酯。
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4.发明授权公开(公告)号：US07510009B2
公开(公告)日：2009-03-31
申请号：US11947473
申请日：2007-11-29
申请人： Kay E. Cawiezel , Jeffrey C. Dawson
发明人： Kay E. Cawiezel , Jeffrey C. Dawson
IPC分类号： E21B43/16
CPC分类号： C09K8/72 , C09K8/74 , C09K2208/32 , Y10S507/933
摘要： A method of acidizing a subterranean formation with a diverting agent composed of a gelled or thickened viscoelastic foam or fluid generated from (i.) an amidoamine oxide gelling agent and (ii.) an acid or foam, water and/or brine. The gelled or thickened foam or fluid may be generated in-situ or introduced directly into the formation by mixing of the amidoamine oxide gelling agent and acid or foam, water and/or brine. As the acid spends, the acidizing fluid thickens. When the acid is further spent, the fluid viscosity declines eventually returning to a low viscosity state, allowing for easy cleanup. The process allows for selective acidizing of less permeable zones of the formation and more uniform stimulation of the hydrocarbon bearing formation.
摘要翻译： 用由（i。）酰氨基胺氧化物胶凝剂和（ii）酸或泡沫，水和/或盐水产生的胶凝或增稠的粘弹性泡沫或流体组成的转移剂酸化地层的方法。 凝胶或增稠的泡沫或流体可以原位产生或通过混合酰胺胺氧化物胶凝剂和酸或泡沫，水和/或盐水直接引入地层中。 随着酸的消耗，酸化液变稠。 当酸被进一步消耗时，流体粘度下降最终回到低粘度状态，容易清理。 该方法允许选择性酸化地层的较低渗透性区域和对含烃地层的更均匀的刺激。
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公开(公告)号：US06844296B2
公开(公告)日：2005-01-18
申请号：US10177983
申请日：2002-06-21
申请人： Jeffrey C. Dawson , Hoang Van Le
发明人： Jeffrey C. Dawson , Hoang Van Le
CPC分类号： C09K8/685 , Y10S507/903 , Y10S507/922
摘要： Fracturing fluid compositions and methods for their preparation and use are disclosed. The compositions are useful in the oil and gas drilling operations, as well as in gravel packing operations, water blocking, temporary plugging for purposes of wellbore isolation and/or fluid loss control, and other uses. The compositions comprise a liquid, a polymer soluble in the liquid, having a degree of substitution of ionic groups of about 0.01 to about 0.1; and a crosslinking agent capable of increasing the viscosity of the fracturing fluid by crosslinking the polymer in liquid.
摘要翻译： 公开了压裂液组合物及其制备和使用方法。 该组合物可用于石油和天然气钻井操作，以及用于砾石包装操作，水封闭，用于井眼隔离和/或失水控制的临时堵塞以及其它用途。 组合物包含液体，可溶于液体的聚合物，离子基团的取代度为约0.01至约0.1; 以及能够通过使聚合物在液体中交联而能够提高压裂液的粘度的交联剂。
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公开(公告)号：US06756345B2
公开(公告)日：2004-06-29
申请号：US09855412
申请日：2001-05-15
IPC分类号： C09K300
CPC分类号： C09K8/685 , C09K8/665 , C09K2208/22 , Y10S507/903 , Y10S507/922
摘要： A well service fluid composition comprises a fracturing fluid and a gas hydrate inhibitor. Preferably, the gas hydrate inhibitor does not affect the function of the fracturing fluid and is present in an amount sufficient to control and/or minimize the formation of gas hydrates. The well service fluid composition is useful in hydraulic fracturing in which the composition is injected into a subterranean formation under sufficient pressure to initiate and propagate a fracture in the formation. The fracturing fluid may be subsequently recovered when the fracturing operation is completed.
摘要翻译： 良好的服务流体组合物包括压裂液和气体水合物抑制剂。 优选地，气体水合物抑制剂不影响压裂液的功能，并且以足以控制和/或最小化气体水合物形成的量存在。 井服务流体组合物可用于水力压裂，其中组合物在足够的压力下被注入到地下地层中以引发和传播地层中的断裂。 压裂作业完成后，压裂液可随后回收。
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公开(公告)号：US06419017B1
公开(公告)日：2002-07-16
申请号：US09666043
申请日：2000-09-20
IPC分类号： E21B3300
CPC分类号： C09K8/44
摘要： A method of preventing gas breakthrough in an oil well, which includes first pumping a slug of an alkaline earth salt into the well bore, followed by a slug of spacer solution, and finally a slug of a fatty acid resin. The resin can comprise at least one fatty acid, a fat (or tall oil), and other components. The resin and alkaline earth salt advantageously react in situ to form a water and gas insoluble precipitate or gum that forms a sealing zone around the oil/gas interface of the well bore, and also allows the oil to dissolve the precipitate to facilitate recovery of the oil.
摘要翻译： 一种防止油井中的气体穿透的方法，其包括首先将碱土矿盐的块塞入井眼，然后是间隔液溶液块，最后将一些脂肪酸树脂。 树脂可以包含至少一种脂肪酸，脂肪（或妥尔油）和其它组分。 树脂和碱土碱盐有利地在原位反应以形成水和气体不溶的沉淀物或胶，其形成围绕井眼的油/气界面的密封区，并且还允许油溶解沉淀物以便于回收 油。
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8.发明授权
公开(公告)号：US5082579A
公开(公告)日：1992-01-21
申请号：US465903
申请日：1990-01-16
申请人： Jeffrey C. Dawson
发明人： Jeffrey C. Dawson
CPC分类号： C08B37/0087 , C09K8/685 , Y10S507/902 , Y10S507/903 , Y10S507/922
摘要： A complexor and method of use are shown for providing controlled delay of the cross-linking reaction in an aqueous well fracturing fluid. A base fluid is first prepared by blending together an aqueous fluid and a hydratable polymer which is capable of gelling in the presence of borate ions. The complexor is prepared by mixing a cross-linking additive capable of furnishing borate ions in solution with a delay additive, such as glyoxal. The delay additive is effective, within a selected pH range, to chemically bond with both boric acid and the borate ions produced by the cross-linking additive to theeby limit the number of borate ions initially available in solution for subsequent cross-linking of the hydratable polysaccharide. The subsequent rate of cross-linking of the polysaccharide can be controlled by adjusting the pH of the complexor solution.
摘要翻译： 显示了一种复合剂和使用方法，用于在含水井压裂液中提供交联反应的受控延迟。 首先通过将含水流体和能够在硼酸根离子存在下凝胶化的可水合聚合物共混在一起来制备基础流体。 通过将能够在溶液中提供硼酸根离子的交联添加剂与延迟添加剂如乙二醛混合来制备络合物。 延迟添加剂在选定的pH范围内有效地与硼酸和由交联添加剂产生的硼酸根离子化学键合，以限制最初在溶液中可用的硼酸根离子的数量，以便后续的可水合交联剂的交联 多糖。 可以通过调节复合溶液的pH来控制多糖的随后的交联速率。
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公开(公告)号：US5067566A
公开(公告)日：1991-11-26
申请号：US640957
申请日：1991-01-14
申请人： Jeffrey C. Dawson
发明人： Jeffrey C. Dawson
IPC分类号： C09K8/68
CPC分类号： C09K8/685 , Y10S507/921
摘要： A method is shown for fracturing a subterranean formation in which a hydratable polymer, crosslinking agent and breaker are combined to form a gelled fracturing fluid. The pH of the fracturing fluid is initially raised above and 9.0 to deactivate the breaker. A pH regulating substance is added to the fracturing fluid which slowly hydrolyzes to produce an acid, thereby dropping the breaker to produce a controlled break of the polymer gel.
摘要翻译： 示出了用于压裂地层的方法，其中将可水合的聚合物，交联剂和破碎剂组合以形成胶凝的压裂液。 压裂液的pH最初升高到9.0以上以使断路器失效。 将pH调节物质加入到缓慢水解产生酸的压裂液中，从而滴下破碎剂以产生聚合物凝胶的受控断裂。
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10.发明申请公开(公告)号：US20080121398A1
公开(公告)日：2008-05-29
申请号：US11947473
申请日：2007-11-29
申请人： Kay E. Cawiezel , Jeffrey C. Dawson
发明人： Kay E. Cawiezel , Jeffrey C. Dawson
IPC分类号： E21B43/16
CPC分类号： C09K8/72 , C09K8/74 , C09K2208/32 , Y10S507/933
摘要： A method of acidizing a subterranean formation with a diverting agent composed of a gelled or thickened viscoelastic foam or fluid generated from (i.) an amidoamine oxide gelling agent and (ii.) an acid or foam, water and/or brine. The gelled or thickened foam or fluid may be generated in-situ or introduced directly into the formation by mixing of the amidoamine oxide gelling agent and acid or foam, water and/or brine. As the acid spends, the acidizing fluid thickens. When the acid is further spent, the fluid viscosity declines eventually returning to a low viscosity state, allowing for easy cleanup. The process allows for selective acidizing of less permeable zones of the formation and more uniform stimulation of the hydrocarbon bearing formation.
摘要翻译： 用由（i。）酰氨基胺氧化物胶凝剂和（ii）酸或泡沫，水和/或盐水产生的胶凝或增稠的粘弹性泡沫或流体组成的转移剂酸化地层的方法。 凝胶或增稠的泡沫或流体可以原位产生或通过混合酰胺胺氧化物胶凝剂和酸或泡沫，水和/或盐水直接引入地层中。 随着酸的消耗，酸化液变稠。 当酸被进一步消耗时，流体粘度下降最终回到低粘度状态，容易清理。 该方法允许选择性酸化地层的较低渗透性区域和对含烃地层的更均匀的刺激。
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