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公开(公告)号：US5624886A
公开(公告)日：1997-04-29
申请号：US922129
申请日：1992-07-29
申请人： Jeffrey C. Dawson , Hoang Van Le , William R. Wood
发明人： Jeffrey C. Dawson , Hoang Van Le , William R. Wood
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 in an aqueous carrier to form a gelled fracturing fluid. The breaker is comprised of a substantially insoluble oxidant which is granulated and formed into a pellet or prill with a suitable binder. The pellet so formed can also contain a chelating agent and an activator in order to enhance the rate of breaking. The substantially insoluble oxidant is selected from the group consisting of alkaline earth and zinc salts of peroxide, perphosphate, perborate, and percarbonate.
摘要翻译： 示出了用于压裂地下地层的方法，其中可水合的聚合物，交联剂和破坏剂在水性载体中组合以形成胶凝的压裂液。 断路器由基本上不溶的氧化剂组成，其被造粒并用合适的粘合剂形成颗粒或颗粒。 如此形成的颗粒也可以含有螯合剂和活化剂以提高断裂率。 基本上不溶的氧化剂选自过氧化物，过磷酸盐，过硼酸盐和过碳酸盐的碱土金属盐和锌盐。
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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：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：US5798320A
公开(公告)日：1998-08-25
申请号：US939963
申请日：1997-09-29
申请人： Jeffrey C. Dawson , Hoang Van Le
发明人： Jeffrey C. Dawson , Hoang Van Le
CPC分类号： C09K8/685 , C07C51/412 , C09K3/00 , Y10S507/903 , Y10S507/922
摘要： A method of formulating a zirconium lactate compound is accomplished by combining in solution lactic acid or a lactate salt with zirconium carbonate. The reacting solution forms zirconium lactate and carbon dioxide which is evolved as a gas from the solution. This eliminates the need to filter or wash the zirconium lactate in order to remove undesirable by-products. The zirconium lactate can be used as a crosslinking agent for crosslinking aqueous polymer gels used in such things as fracturing fluids for fracturing subterranean formations of oil and gas wells.
摘要翻译： 配制乳酸锆化合物的方法是通过将溶液乳酸或乳酸盐与碳酸锆组合而完成的。 反应溶液形成乳酸锆和作为气体从溶液中放出的二氧化碳。 这样不需要过滤或洗涤乳酸锆，以除去不需要的副产物。 乳酸锆可用作交联剂，用于交联用于诸如用于压裂油气井地下地层的压裂液的水性聚合物凝胶。
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公开(公告)号：US5773638A
公开(公告)日：1998-06-30
申请号：US858018
申请日：1997-05-16
申请人： Jeffrey C. Dawson , Hoang Van Le
发明人： Jeffrey C. Dawson , Hoang Van Le
摘要： A method of formulating an organo-zirconium compound is accomplished by combining in solution a dialdehyde such as glyoxal with zirconium carbonate. The reacting solution forms an organo-zirconium compound and carbon dioxide which is evolved as a gas from the solution. This eliminates the need to filter or wash the organo-zirconium compound in order to remove undesirable by-products. The organo-zirconium compound can be used as a crosslinking agent for crosslinking aqueous polymer gels used in fracturing fluids for fracturing subterranean formations of oil and gas wells.
摘要翻译： 配制有机锆化合物的方法是通过在二醛例如乙二醛与碳酸锆的溶液中混合来实现的。 反应溶液形成有机锆化合物和作为气体从溶液中放出的二氧化碳。 这样就不需要过滤或洗涤有机锆化合物，以便去除不希望的副产物。 有机锆化合物可用作交联剂用于交联用于压裂液体的水性聚合物凝胶，用于压裂油气井的地层。
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公开(公告)号：US06983801B2
公开(公告)日：2006-01-10
申请号：US10923930
申请日：2004-08-23
申请人： Jeffrey C. Dawson , Hoang Van Le
发明人： Jeffrey C. Dawson , Hoang Van Le
IPC分类号： E21B43/26
摘要： A well treatment fluid composition comprises a solvent (such as water), a polymer soluble or hydratable in the solvent, a crosslinking agent, an inorganic breaking agent, and an ester compound. Preferably, the hydratable polymer is a polysaccharide, such as galactomannan, cellulose, or derivatives thereof. The crosslinking agent is preferably a borate, titanate, or zirconium-containing compound. The inorganic breaking agent is preferably a metal-based oxidizing agent, such as an alkaline earth metal or transition metal-based oxidizing agent. The ester compound is preferably an ester of polycarboxylic acid, such as an ester of oxalate, citrate, or ethylenediamine tetraacetate. One example of a suitable ester compound is acetyl triethyl citrate.
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公开(公告)号：US06793018B2
公开(公告)日：2004-09-21
申请号：US10041511
申请日：2002-01-08
申请人： Jeffrey C. Dawson , Hoang Van Le
发明人： Jeffrey C. Dawson , Hoang Van Le
IPC分类号： E21B4326
摘要： A well treatment fluid composition comprises a solvent (such as water), a polymer soluble or hydratable in the solvent, a crosslinking agent, an inorganic breaking agent, and an ester compound. Preferably, the hydratable polymer is a polysaccharide, such as galactomannan, cellulose, or derivatives thereof. The crosslinking agent is preferably a borate, titanate, or zirconium-containing compound. The inorganic breaking agent is preferably a metal-based oxidizing agent, such as an alkaline earth metal or transition metal-based oxidizing agent. The ester compound is preferably an ester of polycarboxylic acid, such as an ester of oxalate, citrate, or ethylenediamine tetraacetate. One example of a suitable ester compound is acetyl triethyl citrate.
摘要翻译： 良好的处理流体组合物包含溶剂（例如水），在溶剂中可溶或可水合的聚合物，交联剂，无机破坏剂和酯化合物。 优选地，可水合聚合物是多糖，例如半乳甘露聚糖，纤维素或其衍生物。 交联剂优选为硼酸盐，钛酸盐或含锆化合物。 无机破坏剂优选为金属类氧化剂，例如碱土金属或过渡金属类氧化剂。 酯化合物优选为多元羧酸的酯，例如草酸酯，柠檬酸酯或乙二胺四乙酸酯。 合适的酯化合物的一个实例是乙酰基柠檬酸三乙酯。
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公开(公告)号：US06649572B2
公开(公告)日：2003-11-18
申请号：US09784695
申请日：2001-02-15
IPC分类号： C09K300
CPC分类号： C09K8/685 , Y10S507/903 , Y10S507/922
摘要： Methods are provided for fracturing subterranean formations using fluids having substantially reduced polymer loadings that have performance equivalent to conventional fluids. Reduced polymer loadings provide significant advantages such as reduced treatment costs and less damage to the fracture sand pack and surrounding subterranean formations.
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公开(公告)号：US06383990B1
公开(公告)日：2002-05-07
申请号：US09454687
申请日：1999-12-03
IPC分类号： C09K300
CPC分类号： C09K8/685 , Y10S507/922
摘要： Methods are provided for fracturing subterranean formations using fluids having substantially reduced polymer loadings that have performance equivalent to conventional fluids. Reduced polymer loadings provide significant advantages such as reduced treatment costs and less damage to the fracture sand pack and surrounding subterranean formations.
摘要翻译： 提供了使用具有与常规流体相当的性能具有显着降低的聚合物负载的流体来压裂地下地层的方法。 降低的聚合物负荷提供了显着的优点，例如降低了处理成本，减少了对破碎砂堆和周围地层的破坏。
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公开(公告)号：US5950729A
公开(公告)日：1999-09-14
申请号：US857574
申请日：1997-05-16
申请人： Jeffrey C. Dawson , Hoang Van Le
发明人： Jeffrey C. Dawson , Hoang Van Le
摘要： A method of formulating an organo-zirconium compound is accomplished by combining in solution a dialdehyde such as glyoxal with zirconium carbonate. The reacting solution forms an organo-zirconium compound and carbon dioxide which is evolved as a gas from the solution. This eliminates the need to filter or wash the organo-zirconium compound in order to remove undesirable by-products. The organo-zirconium compound can be used as a crosslinking agent for crosslinking aqueous polymer gels used in fracturing fluids for fracturing subterranean formations of oil and gas wells.
摘要翻译： 配制有机锆化合物的方法是通过在二醛例如乙二醛与碳酸锆的溶液中混合来实现的。 反应溶液形成有机锆化合物和作为气体从溶液中放出的二氧化碳。 这样就不需要过滤或洗涤有机锆化合物，以便去除不希望的副产物。 有机锆化合物可用作交联剂用于交联用于压裂液体的水性聚合物凝胶，用于压裂油气井的地层。
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