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71. 发明授权

US5650379A Process for reducing permeability in a subterranean hydrocarbon-bearing formation utilizing a gelation solution having a controlled gelation rate 失效
标题翻译：使用具有受控凝胶化速率的凝胶化溶液降低地下含烃地层的渗透性的方法
公开(公告)号：US5650379A
公开(公告)日：1997-07-22
申请号：US463841
申请日：1995-06-05
申请人： Robert D. Sydansk
发明人： Robert D. Sydansk
IPC分类号： C09K8/512 , E21B43/25 , E21B33/138
CPC分类号： C09K8/512 , Y10S507/903
摘要： A process and composition are provided for permeability reduction in a hydrocarbon-bearing formation to improve hydrocarbon recovery therefrom. The process includes placement of a crosslinked polymer gel in the treatment region preceded by surface preparation of a gelation solution which is the gel precursor. The gelation solution contains a crosslinkable polymer, a chromium(III)/carboxylate complex crosslinking agent, a carboxylate salt delaying agent and an aqueous solvent. The gel is placed in the treatment region by injecting the gelation solution into a well bore in fluid communication with the formation, displacing it into the desired treatment region and gelling the solution to completion forming the permeability-reducing gel in situ. The gelation rate is retarded in a controlled manner by adjusting the composition or concentration of the delaying agent in the gelation solution.
摘要翻译：提供了一种方法和组合物，用于含烃地层中的渗透率降低以改善烃的回收。该方法包括将交联聚合物凝胶放置在处理区域中，之后是凝胶化溶液的表面制备，其是凝胶前体。凝胶溶液含有可交联聚合物，铬（III）/羧酸盐络合物交联剂，羧酸盐延迟剂和水性溶剂。将凝胶通过将凝胶化溶液注入到与地层流体连通的孔中而置于处理区域中，将其置换成所需的处理区域，并将溶液凝胶化成完成，形成原位渗透性降低的凝胶。通过调节凝胶化溶液中延迟剂的组成或浓度，以受控的方式阻止凝胶化速度。

72. 发明授权

US5486312A High temperature stable gels 失效
标题翻译：高温稳定凝胶
公开(公告)号：US5486312A
公开(公告)日：1996-01-23
申请号：US119715
申请日：1993-09-10
申请人： Burton B. Sandiford , Hoai T. Dovan , Richard D. Hutchins
发明人： Burton B. Sandiford , Hoai T. Dovan , Richard D. Hutchins
IPC分类号： B01J13/00 , C08F8/00 , C09K8/512 , C09K8/68 , C09K8/88 , C09K8/94 , C08F8/32 , C09K3/00
CPC分类号： C09K8/887 , B01J13/0065 , C08F8/00 , C09K8/512 , C09K8/685 , C09K8/94 , Y10S507/903 , Y10S524/916 , Y10S526/932
摘要： Gels stable in a subterranean formation at a temperature greater than about 175.degree. F. are formed using, inter alia, a stabilizing agent (e.g., a buffer having a buffering capacity at a pH of at least about 8 and/or a chelating agent).
摘要翻译：使用尤其是稳定剂（例如，具有至少约8的pH的缓冲能力的缓冲剂和/或螯合剂）形成在大于约175°F的温度下在地层中稳定的凝胶。。

73. 发明授权

US5480933A Acceleration of gelation of water soluble polymers 失效
公开(公告)号：US5480933A
公开(公告)日：1996-01-02
申请号：US330872
申请日：1994-10-28
申请人： Kelly B. Fox , Alvin Evans, Jr.
发明人： Kelly B. Fox , Alvin Evans, Jr.
IPC分类号： C08L101/00 , C09K8/04 , C09K8/512 , E21B33/138 , C08K3/28 , C08K5/16
CPC分类号： C09K8/512
摘要： A gellable composition for oil field operations and a process for accelerating the gelation of the gellable composition for shut-in well are disclosed. The composition comprises: (1) an ammonium ion donor; (2) a water soluble acrylamide-containing polymer; (3) a first crosslinking component selected from the group consisting of aldehydes and aldehyde-generating compounds; (4) a second crosslinking component selected from the group consisting of an aromatic compound and an alcohol where the aromatic compound is selected from the group consisting of phenols and acids; and (4) water.

74. 发明授权

US5441928A Aqueous gellable composition containing an anti-syneresis agent 失效
标题翻译：含有抗脱水剂的含水可胶凝组合物
公开(公告)号：US5441928A
公开(公告)日：1995-08-15
申请号：US981761
申请日：1992-11-25
申请人： Paola Albonico , Thomas P. Lockhart
发明人： Paola Albonico , Thomas P. Lockhart
IPC分类号： B01J13/00 , C08K5/04 , C08K5/07 , C08K5/09 , C08K5/13 , C08K5/16 , C08K5/17 , C08K5/38 , C08K5/5317 , C08K5/5353 , C08L33/24 , C08L33/26 , C09K3/00 , C09K8/24 , C09K8/512 , E21B33/00
CPC分类号： C09K8/512 , C08K5/09 , C08K5/175 , C08K5/5353 , C09K8/24 , Y10S507/935
摘要： An aqueous gellable composition capable of producing gels resistant to syneresis in the presence of divalent ions, contains:a water-soluble acrylamide polymer or copolymer,a crosslinking agent formed by a water-soluble aldehyde, or a water-soluble aldehyde and a water-soluble phenol,a water-soluble anti-syneresis agent selected from: organic carboxy acids, organic hydroxy acids and aminoacids, or among aminophosphonic acids and their alkali-metal or ammonium salts.When malonic acid is used, a delay in aqueous composition gelation is additionally obtained.
摘要翻译：能够在二价离子存在下产生抗脱水凝胶的水凝胶组合物含有：水溶性丙烯酰胺聚合物或共聚物，由水溶性醛形成的交联剂，或水溶性醛和水溶性醛，可溶性苯酚，选自以下的水溶性抗脱水剂：有机羧酸，有机羟基酸和氨基酸，或氨基膦酸及其碱金属或铵盐。当使用丙二酸时，另外获得水性组合物凝胶化的延迟。

75. 发明授权

US5439057A Method for controlling fluid loss in high permeability formations 失效
标题翻译：控制高渗透性地层流体损失的方法
公开(公告)号：US5439057A
公开(公告)日：1995-08-08
申请号：US236794
申请日：1994-04-29
申请人： Jimmie D. Weaver , Ronald E. Himes
发明人： Jimmie D. Weaver , Ronald E. Himes
IPC分类号： C09K8/08 , C09K8/10 , C09K8/512 , C09K8/516 , C09K8/68 , C09K8/92 , E21B21/00 , E21B43/25 , E21B43/26
CPC分类号： C09K8/92 , C09K8/08 , C09K8/10 , C09K8/512 , C09K8/516 , C09K8/685 , E21B21/003 , Y10S507/903
摘要： The present invention provides a method of controlling fluid loss to a permeable formation penetrated by a wellbore. A novel fluid loss agent is prepared by forming a crosslinked polymer gel which then is sheared to break the gel into discrete particles. A slurry then is formed of the particles by dispersing the particles in an aqueous fluid having a density similar to that of the gel particles. The slurry then is introduced into contact with the permeable formation and a filter cake of the particles is formed upon contact with the formation and loss of the slurrying fluid to the formation. The filter cake provides further fluid loss control to the permeable formation.
摘要翻译：本发明提供了一种控制由井筒穿透的可渗透地层的流体损失的方法。通过形成交联的聚合物凝胶制备新的流体损失剂，然后将其剪切以将凝胶分解成离散的颗粒。然后通过将颗粒分散在具有与凝胶颗粒的密度相似的密度的水性流体中，由颗粒形成浆料。然后将浆料引入与可渗透地层接触，并且在与地层的形成和制浆流体的损失接触时形成颗粒的滤饼。滤饼为可渗透地层提供进一步的流体损失控制。

76. 发明授权

US5431226A Process for reducing permeability in a high-temperature subterranean hydrocarbon-bearing formation utilizing a decarboxylated crosslinking agent 失效
标题翻译：使用脱羧交联剂降低高温地下含烃地层的渗透性的方法
公开(公告)号：US5431226A
公开(公告)日：1995-07-11
申请号：US176875
申请日：1994-01-03
申请人： Robert D. Sydansk
发明人： Robert D. Sydansk
IPC分类号： C09K8/512 , E21B33/138
CPC分类号： C09K8/512 , Y10S507/903
摘要： A process and composition are provided for permeability reduction in a hydrocarbon-bearing formation to improve hydrocarbon recovery therefrom. The process includes placement of a crosslinked polymer gel in the treatment region preceded by surface preparation of a gelation solution from which the gel is formed. The gelation solution contains a crosslinkable polymer, a transition metal/poly-carboxylate precursor complex and an aqueous solvent. The gel is placed in the treatment region by injecting the gelation solution into a well bore in fluid communication with the formation, activating the gelation solution in situ, displacing the gelation solution into the desired treatment region and gelling the solution to completion forming the permeability-reducing gel in situ. The gelation rate is retarded in a controlled manner by adjusting the molar ratio of the polycarboxylate to transition metal in the precursor complex of the gelation solution.
摘要翻译：提供了一种方法和组合物，用于含烃地层中的渗透率降低以改善烃的回收。该方法包括将交联聚合物凝胶放置在处理区域中，之后是形成凝胶的凝胶溶液的表面制备。凝胶溶液含有可交联聚合物，过渡金属/多羧酸酯前体复合物和水性溶剂。将凝胶放置在处理区域中，将凝胶化溶液注入到与地层流体连通的井眼中，原位活化凝胶化溶液，将凝胶化溶液置换成所需的处理区域，并将溶液凝胶化，形成渗透性 - 原位还原凝胶。通过调节凝胶化溶液的前体复合物中的多羧酸盐与过渡金属的摩尔比，以受控的方式阻止凝胶化速率。

77. 发明授权

US5399269A Gelation of water soluble polymers 失效
标题翻译：水溶性聚合物凝胶化
公开(公告)号：US5399269A
公开(公告)日：1995-03-21
申请号：US220140
申请日：1994-03-30
申请人： Ahmad Moradi-Araghi
发明人： Ahmad Moradi-Araghi
IPC分类号： C08K5/00 , C09K8/512 , E21B33/138
CPC分类号： C09K8/512 , C08K5/0025 , Y10S507/903
摘要： A gelable composition and process are disclosed that delay the gelation and increase the gel strength of gelled water soluble acrylamide-containing polymers contains: (1) a water dispersible first crosslinking compound selected from the group consisting of p-aminosalicylic acid, furfuryl alcohol, RArOC(O)R' and HOArC(O)OR" wherein Ar represents a phenyl group which can be substituted or non-substituted; R is a hydrogen or a carboxylic group; R' is a C.sub.1 -C.sub.6 alkyl; R" is a hydrogen, a phenyl group, or a C.sub.1 -C.sub.6 alkyl; and when R is a carboxylic group, R and C(O)OR" can be at ortho, meta, or para position with respect to the OC(O)R' group and the OH group, respectively; (2) a water dispersible second crosslinking compound selected from the group consisting of aldehydes and aldehyde-generating compounds; (3) a water soluble acrylamide-containing polymer; and (4) water.
摘要翻译：公开了一种胶凝组合物和方法，其延迟凝胶化并增加凝胶水溶性丙烯酰胺聚合物的凝胶强度，其包含：（1）选自对氨基水杨酸，糠醇，RArOC的水分散性第一交联化合物（O）R'和HOArC（O）OR“，其中Ar表示可被取代或未取代的苯基; R是氢或羧基; R'是C 1 -C 6烷基; R“是氢，苯基或C 1 -C 6烷基; 当R是羧基时，R和C（O）OR“可分别相对于OC（O）R'基和OH基在邻位，间位或对位; （2）选自醛和醛产生化合物的水分散性第二交联化合物; （3）含水溶性丙烯酰胺的聚合物; 和（4）水。

78. 发明授权

US5335733A Method for delaying gelation of a gelable polymer composition injected into a subterranean formation 失效
标题翻译：延迟注入地下地层的可凝胶化聚合物组合物凝胶化的方法
公开(公告)号：US5335733A
公开(公告)日：1994-08-09
申请号：US83712
申请日：1993-06-25
申请人： Burton B. Sandiford , Hoai T. Dovan , Richard D. Hutchins
发明人： Burton B. Sandiford , Hoai T. Dovan , Richard D. Hutchins
IPC分类号： B01J13/00 , C08F8/00 , C09K8/512 , C09K8/68 , C09K8/88 , C09K8/94 , E21B33/138
CPC分类号： C09K8/887 , B01J13/0065 , C08F8/00 , C09K8/512 , C09K8/685 , C09K8/94 , Y10S507/935
摘要： The gelation of a gelable composition is delayed by using, inter alia, a crosslinking rate retardant selected from the group consisting of epoxides, ethers, and mixtures thereof.
摘要翻译：使用尤其是选自环氧化物，醚及其混合物的交联速率阻滞剂来延缓可胶凝组合物的凝胶化。

79. 发明授权

US5246073A High temperature stable gels 失效
标题翻译：高温稳定凝胶
公开(公告)号：US5246073A
公开(公告)日：1993-09-21
申请号：US940301
申请日：1992-08-31
申请人： Burton B. Sandiford , Hoai T. Dovan , Richard D. Hutchins
发明人： Burton B. Sandiford , Hoai T. Dovan , Richard D. Hutchins
IPC分类号： B01J13/00 , C08F8/00 , C09K8/512 , C09K8/68 , C09K8/88 , C09K8/94
CPC分类号： C09K8/887 , B01J13/0065 , C08F8/00 , C09K8/512 , C09K8/685 , C09K8/94 , Y10S507/903 , Y10S524/916 , Y10S526/932
摘要： Gels stable in a subterranean formation at a temperature greater than about 175.degree. F. are formed using, inter alia, a stabilizing agent (e.g., a buffer having a buffering capacity at a pH of at least about 8 and/or a chelating agent).
摘要翻译：使用尤其是稳定剂（例如，具有至少约8的pH的缓冲能力的缓冲剂和/或螯合剂）形成在大于约175°F的温度下在地层中稳定的凝胶。。

80. 发明授权

US5244936A Enhanced oil recovery profile control with crosslinked anionic acrylamide copolymer gels 失效
标题翻译：用交联的阴离子丙烯酰胺共聚物凝胶增强采油曲线控制
公开(公告)号：US5244936A
公开(公告)日：1993-09-14
申请号：US753131
申请日：1991-08-30
申请人： Thomas O. Mitchell
发明人： Thomas O. Mitchell
IPC分类号： C08F8/00 , C08L33/26 , C08L61/00 , C09K8/512 , C09K8/88
CPC分类号： C09K8/887 , C08F8/00 , C08L33/26 , C09K8/512 , C08L61/00
摘要： An aqueous polymeric gel-forming composition capable of selectively plugging highly permeable zones in subterranean oil-bearing formations. The composition comprises an aqueous solution of an anionic acrylamide copolymer of high molecular weight, comprising about 5 to 95 weight percent of 2-acrylamido-2-methylpropanesulfonic acid, about 2 to 95 weight percent of N-vinyl-N-methyl acetamide and about 5 to 93 weight percent of acrylamide, and a crosslinking agent selected from the group consisting of transition metal ions, phenolic resins and amino resins. The compositions of this invention will form stable gels in brines of wide-ranging salinity and are effective at the pH levels encountered in carbon dioxide and water flooding operations. Also provided is a process for selectively plugging regions of higher permeability within an oil-bearing formation to improve sweep efficiency during a fluid flood oil recovery operation.
摘要翻译：一种含水聚合物凝胶形成组合物，其能够选择性地堵塞地下含油地层中的高渗透性区域。该组合物包含高分子量的阴离子丙烯酰胺共聚物的水溶液，其包含约5-95重量％的2-丙烯酰胺基-2-甲基丙磺酸，约2-95重量％的N-乙烯基-N-甲基乙酰胺和约 5〜93重量％的丙烯酰胺，以及选自过渡金属离子，酚醛树脂和氨基树脂的交联剂。本发明的组合物将在宽范围盐度的盐水中形成稳定的凝胶，并且在二氧化碳和水驱操作中遇到的pH水平是有效的。还提供了一种用于在含油地层内有选择地堵塞较高渗透率的区域的方法，以提高在流体淹油操作期间的扫掠效率。

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