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101. 发明申请

US20120298357A1 Compositions and systems for combatting lost circulation and methods of using the same 有权
标题翻译：打击流通的组成和制度及其使用方法
公开(公告)号：US20120298357A1
公开(公告)日：2012-11-29
申请号：US13460266
申请日：2012-04-30
申请人： Ryan G. Ezell , B. Raghava Reddy
发明人： Ryan G. Ezell , B. Raghava Reddy
IPC分类号： E21B43/16 , A47B43/00
CPC分类号： C09K8/5045 , C09K8/508 , C09K8/512
摘要： A method of servicing a wellbore in a subterranean formation comprising placing a first stream comprising a dilute solution of a metal acrylate into a lost circulation zone in the subterranean formation; placing a second stream comprising an activator into the lost circulation zone; and forming a lost circulation material upon contacting of the metal acrylate and the activator, wherein the lost circulation material forms in from about 0 to about 60 minutes. A method of servicing a wellbore in a subterranean formation comprising placing a composition comprising a dilute solution of a cross-linkable material and an encapsulated activator into a lost circulation zone in the subterranean formation; and allowing the composition to set.
摘要翻译：一种在地下地层中维护井眼的方法，包括将包含金属丙烯酸酯的稀溶液的第一物流放置在地下地层的失水循环区中; 将包含活化剂的第二物流放入所述丢失循环区中; 以及在金属丙烯酸酯和活化剂接触时形成漏失循环材料，其中所述失水循环材料形成约0至约60分钟。一种在地下地层中维护井眼的方法，包括将包含可交联材料的稀溶液和包封的活化剂的组合物放置在地层中的失水循环区域中; 并允许组合物设定。

102. 发明申请

US20120214712A1 Methods of Using Polysaccharide Based Cement Additives 失效
标题翻译：多糖水泥添加剂的使用方法
公开(公告)号：US20120214712A1
公开(公告)日：2012-08-23
申请号：US13460533
申请日：2012-04-30
申请人： B. Raghava Reddy , Anindya Ghosh , Russell Fitzgerald
发明人： B. Raghava Reddy , Anindya Ghosh , Russell Fitzgerald
IPC分类号： C09K8/02 , C09K8/00 , C09K8/58 , C09K8/62 , C09K8/46 , C09K8/50
CPC分类号： C09K8/10 , C04B24/38 , C04B28/02 , C08B31/04 , C08B31/06 , C08B31/18 , C08B31/185 , C08B37/0087 , C08L3/04 , C08L3/06 , C08L3/10 , C09K8/08 , C09K8/428 , C09K8/487 , C09K8/493 , C04B24/383 , C04B20/023
摘要： A method of servicing a wellbore comprising introducing to the wellbore a wellbore servicing fluid comprising an additive composition comprising a polysaccharide having carboxylate and sulfonate groups. A method of servicing a wellbore comprising preparing at the well site an additive composition comprising a polysaccharide having carboxylate and sulfonate groups, introducing the additive composition into a wellbore servicing fluid, and placing the wellbore servicing fluid into a subterranean formation. A method of preparing a wellbore servicing fluid comprising contacting a polysaccharide composition with an oxidizing agent to form an oxidized polysaccharide, and contacting the oxidized polysaccharide with a sulfonating agent to form a carboxylated sulfonated polysaccharide, and contacting the carboxylated sulfonated polysaccharide with a wellbore servicing fluid.
摘要翻译：一种维修井孔的方法，包括向井筒引入井筒维修流体，其包括含有具有羧酸盐和磺酸盐基团的多糖的添加剂组合物。一种维修井眼的方法，包括在井位处制备包含具有羧酸盐和磺酸盐基团的多糖的添加剂组合物，将添加剂组合物引入井筒维修流体中，以及将井筒维修流体放入地下地层中。一种制备井筒维修流体的方法，包括使多糖组合物与氧化剂接触以形成氧化多糖，并使氧化多糖与磺化剂接触以形成羧化磺化多糖，并使羧化磺化多糖与井筒维修液接触。

103. 发明授权

US08202824B2 Variable density treatment fluids 有权
标题翻译：可变密度处理液
公开(公告)号：US08202824B2
公开(公告)日：2012-06-19
申请号：US12342856
申请日：2008-12-23
申请人： B. Raghava Reddy , Krishna Ravi , Michael Szymanski , Dale Jamison , Donald Whitfill
发明人： B. Raghava Reddy , Krishna Ravi , Michael Szymanski , Dale Jamison , Donald Whitfill
IPC分类号： C09K8/60
CPC分类号： C09K8/032 , B29C44/3496 , C04B20/002 , C04B28/02 , C04B2111/50 , C09K8/467 , C09K8/48 , Y02W30/92 , Y10T428/2982 , C04B14/24 , C04B20/0024 , C04B14/301 , C04B16/085 , C04B20/1051 , C04B16/08 , C04B18/082
摘要： The present invention provides variable density fluid compositions and methods for using such compositions in a subterranean formation. One exemplary embodiment of the variable density fluid compositions of the present invention comprises a variable density fluid comprising: a base fluid, and a portion of variable pressure weighting material particles.
摘要翻译：本发明提供了可变密度流体组合物和在地下地层中使用这种组合物的方法。本发明的可变密度流体组合物的一个示例性实施方案包括可变密度流体，其包含：基础流体和可变压力加权材料颗粒的一部分。

104. 发明申请

US20120090848A1 MODIFICATION OF SOLID POLYSACCHARIDE WITH TRANSESTERIFICATION AGENT 审中-公开
标题翻译：固体多糖与改性剂的改性
公开(公告)号：US20120090848A1
公开(公告)日：2012-04-19
申请号：US13070671
申请日：2011-03-24
申请人： B. Raghava Reddy
发明人： B. Raghava Reddy
IPC分类号： E21B43/25 , C09K8/68 , E21B43/26
CPC分类号： C09K8/08 , C09K8/40 , C09K8/514 , C09K8/68 , C09K8/685 , C09K8/90
摘要： Polysaccharides are reacted with transesterification agents forming modified products that: (1) have increased viscosifying efficiency, i.e., higher viscosities at reduced concentrations compared to the unmodified polysaccharide; or (2) are insolubilized at temperature ranges for which the unmodified polysaccharide would hydrate fully; or (3) both properties. In some cases, the insolubilized polysaccharides can be activated to dissolve and viscosify at specific temperature ranges by using pH modifiers. A method of treating a well is provided, including the steps of: (a) forming a treatment fluid comprising water and a modified polysaccharide, wherein the modified polysaccharide is characterized by having been made by the process of combining: (i) a water-soluble polysaccharide, wherein the polysaccharide is in a solid form during the combining step; and (ii) a transesterification agent, wherein the transesterification agent is in liquid form; wherein the step of combining is in the presence of less than 10% by weight water relative to the water-soluble polysaccharide and wherein any water present is at a pH of 8 or less; and (b) introducing the treatment fluid into the well.
摘要翻译：多糖与形成改性产物的酯交换剂反应，其中：（1）与未改性的多糖相比，具有增加的增粘效率，即降低浓度的较高粘度; 或（2）在未改性多糖将完全水合的温度范围内不溶; 或（3）两种性质。在一些情况下，不溶性多糖可以通过使用pH调节剂被活化以在特定温度范围溶解和粘稠。提供了一种处理井的方法，包括以下步骤：（a）形成包含水和改性多糖的处理流体，其中改性多糖的特征在于通过以下方法制备：（i）可溶性多糖，其中所述多糖在组合步骤期间为固体形式; 和（ii）酯交换剂，其中所述酯交换剂为液体形式; 其中组合步骤相对于水溶性多糖存在小于10重量％的水，并且其中存在的任何水的pH为8以下; 和（b）将处理流体引入井中。

105. 发明授权

US08119575B2 Methods and compositions for treating subterranean formations with gelled hydrocarbon fluids 有权
标题翻译：用胶体烃流体处理地下地层的方法和组合物
公开(公告)号：US08119575B2
公开(公告)日：2012-02-21
申请号：US12011263
申请日：2008-01-25
申请人： Robert S. Taylor , Gary P. Funkhouser , Michael A. McCabe , B. Raghava Reddy
发明人： Robert S. Taylor , Gary P. Funkhouser , Michael A. McCabe , B. Raghava Reddy
IPC分类号： C09K8/00
CPC分类号： C09K8/64 , C09K8/82 , C09K2208/26
摘要： Among other things, methods of treating a subterranean formation with gelled hydrocarbon fluids are provided. In certain embodiments, these methods comprise the steps of providing a gelled liquid hydrocarbon treatment fluid comprising a liquid hydrocarbon and a gelling agent that comprises a polyvalent metal salt of an organophosphonic acid ester or a polyvalent metal salt of an organophosphinic acid, and treating the subterranean formation with the gelled liquid hydrocarbon treatment fluid. The gelled liquid hydrocarbon treatment fluids of the present invention are suitable for use in subterranean treatment operations, such as subterranean stimulation and sand control treatments like fracturing and gravel packing, that may be carried out in subterranean formations for the production of hydrocarbons. The compositions and methods of the present invention also may be suitable, for example, to be used as plugging agents, well bore cleanup fluids, viscous sweep fluids, or insulating fluids to be used in associated methods.
摘要翻译：其中，提供了用凝胶状烃流体处理地下地层的方法。在某些实施方案中，这些方法包括以下步骤：提供包含液体烃和胶凝剂的胶凝液体烃处理流体，其包含有机膦酸酯的多价金属盐或有机亚膦酸的多价金属盐，并处理地下用胶凝液化烃处理液形成。本发明的胶凝液化烃处理流体适用于地下处理操作，例如地层刺激和砂控制处理，如压裂和砾石填充，其可以在用于生产烃的地下地层中进行。本发明的组合物和方法也可适用于例如用作堵塞剂，井眼清洗液，粘性清洗流体或用于相关方法的绝缘流体。

106. 发明申请

US20110105369A1 WELL TREATMENT FLUIDS CONTAINING A VISCOELASTIC SURFACTANT AND A CROSS-LINKING AGENT COMPRISING A WATER-SOLUBLE TRANSITION METAL COMPLEX 审中-公开
标题翻译：含有粘弹性表面活性剂的水处理液和包含水溶性过渡金属络合物的交联剂
公开(公告)号：US20110105369A1
公开(公告)日：2011-05-05
申请号：US12610083
申请日：2009-10-30
申请人： B. Raghava Reddy
发明人： B. Raghava Reddy
IPC分类号： C09K8/86
CPC分类号： C09K8/602 , C09K8/685 , C09K2208/30
摘要： The invention is directed to methods for treating a portion of a well. The methods include the steps of: (A) forming a viscoelastic treatment fluid, wherein the treatment fluid comprises: (i) water; (ii) a viscoelastic surfactant (“VES”), wherein the VES is soluble in the water and wherein the VES is in the form of micelles; and (iii) a cross-linking agent for the VES molecules, wherein: (a) the cross-linking agent comprises cross-linking agent molecules having at least one complexed transition metal, wherein the transition metal has a valence state of at least three; and (b) the cross-linking agent is soluble in the water; and (B) introducing the treatment fluid into a portion of the well. According to a first aspect of the invention, (a) the VES comprises VES molecules having an alkyl group of greater than 14 carbon atoms and (b) the VES comprises VES molecules having at least one functional group selected from a carboxylate group, an amino group, an alcohol group, and an ether group. According to a second aspect of the invention, the VES comprises VES molecules having both an alkyl group of greater than 14 carbon atoms and at least one functional group selected from a carboxylate group, an amino group, an alcohol group, and an ether group.
摘要翻译：本发明涉及用于处理井的一部分的方法。所述方法包括以下步骤：（A）形成粘弹性处理流体，其中所述处理流体包括：（i）水; （ii）粘弹性表面活性剂（“VES”），其中VES可溶于水，其中VES为胶束形式; 和（iii）用于VES分子的交联剂，其中：（a）所述交联剂包含具有至少一种络合的过渡金属的交联剂分子，其中所述过渡金属的价态至少为3 ; 和（b）交联剂可溶于水; 和（B）将处理流体引入井的一部分。根据本发明的第一方面，（a）VES包括具有大于14个碳原子的烷基的VES分子和（b）VES包含具有至少一个选自羧酸酯基，氨基组，醇基和醚基。根据本发明的第二方面，VES包括具有大于14个碳原子的烷基和至少一个选自羧酸酯基，氨基，醇基和醚基的官能团的VES分子。

107. 发明授权

US07749942B2 Variable density fluids and methods of use in subterranean formations 有权
标题翻译：可变密度流体和地下地层中使用的方法
公开(公告)号：US07749942B2
公开(公告)日：2010-07-06
申请号：US12165760
申请日：2008-07-01
申请人： Krishna M. Ravi , Donald L. Whitfill , B. Raghava Reddy , Mike Szymanski
发明人： Krishna M. Ravi , Donald L. Whitfill , B. Raghava Reddy , Mike Szymanski
IPC分类号： C09K8/24 , E21B21/00
CPC分类号： C09K8/03 , C09K8/035 , C09K8/40 , C09K8/467 , C09K8/508 , C09K8/516 , C09K8/536 , C09K8/68 , C09K8/70 , C09K8/74 , C09K8/88 , C09K8/92
摘要： Herein provided are variable density fluid compositions and methods for using such compositions in a subterranean formation. One exemplary embodiment of the variable density fluid compositions of the present invention comprises a variable density fluid comprising: a base fluid; and a portion of elastic particles, the elastic particles having an isothermal compressibility factor in the range of from about 1.5×10−3 (1/psi) to about 1.5×10−9 (1/psi). Also provided are cement compositions comprising elastic particles, processes for preparing such cement compositions, and methods of cementing in subterranean formations using such cement compositions. One or more elastic particles are mixed with the cement before pumping the cement into a well bore. The elastic particles are preferably composed of an elastomeric material such as a copolymer of methylmethacrylate and acrylonitrile; a terpolymer of methylmethacrylate, acrylonitrile, and dichloroethane; a styrene-divinylbenzene copolymer; and polystyrene.
摘要翻译：本文提供的是可变密度流体组合物和在地下地层中使用这种组合物的方法。本发明的可变密度流体组合物的一个示例性实施方案包括可变密度流体，其包含：基础流体; 和一部分弹性颗粒，弹性颗粒的等温压缩系数在约1.5×10-3（1 / psi）至约1.5×10-9（1 / psi）的范围内。还提供了包含弹性颗粒的水泥组合物，用于制备这种水泥组合物的方法，以及使用这种水泥组合物在地下地层中固井的方法。在将水泥泵入井眼之前，将一种或多种弹性颗粒与水泥混合。弹性颗粒优选由弹性体材料构成，例如甲基丙烯酸甲酯和丙烯腈的共聚物; 甲基丙烯酸甲酯，丙烯腈和二氯乙烷的三元共聚物; 苯乙烯 - 二乙烯基苯共聚物; 和聚苯乙烯。

108. 发明授权

US07740066B2 Additives for high alumina cements and associated methods 有权
标题翻译：高氧化铝水泥和相关方法的添加剂
公开(公告)号：US07740066B2
公开(公告)日：2010-06-22
申请号：US12020410
申请日：2008-01-25
申请人： Ying Xu , B. Raghava Reddy , Rickey Lynn Morgan
发明人： Ying Xu , B. Raghava Reddy , Rickey Lynn Morgan
IPC分类号： E21B33/138 , E21B33/14 , C04B7/32 , C09K8/46
CPC分类号： C09K8/467 , C04B28/06 , C04B2111/34 , Y02W30/92 , C04B14/104 , C04B18/08 , C04B22/10 , C04B22/124 , C04B22/142 , C04B22/16
摘要： The present invention includes methods and compositions that include a composition comprising a high alumina cement; a salt comprising at least one salt selected from the group consisting of an acidic salt, a neutral salt, and a low basicity salt; and a swellable clay; and methods of using that composition in subterranean formations.
摘要翻译：本发明包括包含高铝水泥的组合物的方法和组合物; 包含至少一种选自酸性盐，中性盐和低碱性盐的盐的盐; 和可膨胀的粘土; 以及在地下地层中使用该组合物的方法。

109. 发明授权

US07650940B2 Cement compositions comprising particulate carboxylated elastomers and associated methods 有权
公开(公告)号：US07650940B2
公开(公告)日：2010-01-26
申请号：US11321113
申请日：2005-12-29
申请人： B. Raghava Reddy , Krishna M Ravi
发明人： B. Raghava Reddy , Krishna M Ravi
IPC分类号： E21B33/13 , E21B33/14
CPC分类号： C04B16/04 , C04B24/2611 , C04B24/2641 , C04B24/2652 , C04B28/02 , C04B2103/0052 , C04B2103/0058 , C04B2111/2038 , C04B2111/34 , C09K8/467 , C04B20/1033
摘要： Methods of cementing comprising: providing a cement composition comprising water, a cement, and a particulate elastomer comprising a carboxy group; and allowing the cement composition to set. Cement compositions comprising water, a cement, and a particulate elastomer comprising a carboxy group.

110. 发明授权

US07642223B2 Methods of generating a gas in a plugging composition to improve its sealing ability in a downhole permeable zone 有权
标题翻译：在封堵组合物中产生气体以提高其在井下渗透区域中的密封能力的方法
公开(公告)号：US07642223B2
公开(公告)日：2010-01-05
申请号：US10967121
申请日：2004-10-18
申请人： Ashok K. Santra , B. Raghava Reddy , Frank Zamora , Giddo Antonio Ocana Gomez , Ronnie G. Morgan , Mark R. Savery
发明人： Ashok K. Santra , B. Raghava Reddy , Frank Zamora , Giddo Antonio Ocana Gomez , Ronnie G. Morgan , Mark R. Savery
IPC分类号： E21B33/13
CPC分类号： C09K8/516 , E21B33/138
摘要： Methods of servicing a wellbore include generating gas in a plugging composition in situ within a permeable zone in the wellbore, thereby improving the ability of the plugging composition to seal the permeable zone. The gas may be generated via a chemical reaction by, for example, introducing first and second reactants to the plugging composition that can react at ambient temperatures in the wellbore. In an embodiment, the first and second reactants are concurrently pumped into the wellbore via separate flow paths within two concentric conduits to the permeable zone where they are allowed to contact each other in the presence of the plugging composition. In another embodiment, the first reactant, the second reactant, and a retarder for slowing the reaction between the two reactants are concurrently pumped to the permeable zone. In yet another embodiment, one of the reactants is encapsulated to delay a reaction between the two reactants.
摘要翻译：维护井筒的方法包括在井筒内的可渗透区域内原位生成堵塞组合物中的气体，从而提高堵塞组合物密封可渗透区域的能力。可以通过例如将第一和第二反应物引入到可在井眼中的环境温度下反应的堵塞组合物的化学反应来产生气体。在一个实施方案中，第一和第二反应物同时通过在渗透区域的两个同心管道内的分离的流动路径泵送到井筒中，在渗透区域允许它们在堵塞组合物的存在下彼此接触。在另一个实施方案中，用于减缓两种反应物之间的反应的第一反应物，第二反应物和延迟剂同时泵送到可渗透区域。在另一个实施方案中，一种反应物被包封以延迟两种反应物之间的反应。

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