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1. 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。

2. 发明申请

US20090038855A1 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的使用方法
公开(公告)号：US20090038855A1
公开(公告)日：2009-02-12
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： C09K8/02 , E21B43/22
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，弹性颗粒具有在约1.5×10 -3（1 / psi）至约1.5×10 -9（1 / psi）范围内的等温可压缩因子。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。

3. 发明授权

US07482309B2 Methods of drilling wellbores using variable density fluids comprising coated elastic particles 有权
标题翻译：使用包含涂层弹性颗粒的可变密度流体钻井孔的方法
公开(公告)号：US07482309B2
公开(公告)日：2009-01-27
申请号：US10721055
申请日：2003-11-24
申请人： Krishna M. Ravi , Donald L. Whitfill , B. Raghava Reddy
发明人： Krishna M. Ravi , Donald L. Whitfill , B. Raghava Reddy
IPC分类号： E21B21/00 , C09K8/24 , B01F3/12
CPC分类号： C09K8/03 , C09K8/536 , C09K8/70 , C09K8/92
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 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).
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; 和一部分弹性颗粒，弹性颗粒具有在约1.5×10 -3（1 / psi）至约1.5×10 -9（1 / psi）范围内的等温可压缩因子。

4. 发明申请

US20090137431A1 Oilwell sealant compositions comprising alkali swellable latex 失效
公开(公告)号：US20090137431A1
公开(公告)日：2009-05-28
申请号：US12357335
申请日：2009-01-21
申请人： B. Raghava Reddy , Mark R. Savery , Krishna M. Ravi , Donald L. Whitfill
发明人： B. Raghava Reddy , Mark R. Savery , Krishna M. Ravi , Donald L. Whitfill
IPC分类号： C09K8/00
CPC分类号： C09K8/5045 , C09K8/506 , C09K8/508
摘要： Sealant compositions comprising an alkali swellable latex and a pH increasing material and methods of using the same to service a wellbore are provided. In one embodiment, the sealant composition can be used in a wellbore and includes an alkali swellable latex and a pH increasing material. The sealant composition can have a pH of from about 7 to about 14. In other embodiments, the pH increasing material includes a base-producing material. The base-producing material can include alkali and alkali earth metal carbonates, alkali and alkali earth metal bicarbonates, alkali and alkali earth metal hydroxides, alkali and alkali earth metal oxides, alkali and alkali earth metal phosphates, alkali and alkali earth metal hydrogen phosphates, alkali and alkaline earth metal sulphides, alkali and alkaline earth metal salts of silicates, alkali and alkaline earth metal salts of aluminates, water soluble or water dispersible organic amines, polymeric amine, amino alcohols, or combinations thereof.

5. 发明授权

US07284611B2 Methods and compositions for controlling lost circulation in subterranean operations 有权
标题翻译：控制地下作业中流失的方法和组成
公开(公告)号：US07284611B2
公开(公告)日：2007-10-23
申请号：US10982016
申请日：2004-11-05
申请人： B. Raghava Reddy , Donald L. Whitfill , Krishna M. Ravi , Mark R. Savery
发明人： B. Raghava Reddy , Donald L. Whitfill , Krishna M. Ravi , Mark R. Savery
IPC分类号： E21B33/138 , E21B21/00
CPC分类号： C09K8/16 , C09K8/5045 , C09K8/508 , C09K8/516 , C09K2208/18
摘要： A lost circulation composition, that comprises a first portion of particles having a weight mean particle size of less than about 20 microns, a second portion of particles having a weight mean particle size in the range of from about 25 microns to about 400 microns, and a third portion of particles having a weight mean particle size in the range of from about 450 microns to about 1,500 microns, wherein the lost circulation composition has a multimodal particle size distribution, is provided, wherein resilient particles, particles comprising a thermoset polymer laminate, or a combination thereof are present in the lost circulation composition in an amount of at least about 20% by weight of the lost circulation composition, is provided. Drilling fluids, methods of controlling lost circulation, and methods of increasing an effective fracture gradient while drilling also are provided.
摘要翻译：一种失去循环的组合物，其包含重量平均粒度小于约20微米的第一部分颗粒，重量平均粒径在约25微米至约400微米范围内的第二部分颗粒，以及提供了重量平均粒度在约450微米至约1,500微米范围内的颗粒的第三部分，其中所述缺失循环组合物具有多峰粒度分布，其中弹性颗粒包含热固性聚合物层压体的颗粒，或其组合在损失循环组合物中的含量为至少约20重量％的损失循环组合物的量。提供钻井液，控制流失的方法，以及钻井时提高有效裂缝坡度的方法。

6. 发明授权

US07488705B2 Oilwell sealant compositions comprising alkali swellable latex 失效
标题翻译：含有可膨胀乳液的油井密封剂组合物
公开(公告)号：US07488705B2
公开(公告)日：2009-02-10
申请号：US11010117
申请日：2004-12-08
申请人： B. Raghava Reddy , Mark R. Savery , Krishna M. Ravi , Donald L. Whitfill
发明人： B. Raghava Reddy , Mark R. Savery , Krishna M. Ravi , Donald L. Whitfill
IPC分类号： E21B33/13 , E21B43/00 , C09K8/00
CPC分类号： C09K8/5045 , C09K8/506 , C09K8/508
摘要： Sealant compositions comprising an alkali swellable latex and a pH increasing material and methods of using the same to service a wellbore are provided. In one embodiment, the sealant composition can be used in a wellbore and includes an alkali swellable latex and a pH increasing material. The sealant composition can have a pH of from about 7 to about 14. In other embodiments, the pH increasing material includes a base-producing material. The base-producing material can include alkali and alkali earth metal carbonates, alkali and alkali earth metal bicarbonates, alkali and alkali earth metal hydroxides, alkali and alkali earth metal oxides, alkali and alkali earth metal phosphates, alkali and alkali earth metal hydrogen phosphates, alkali and alkaline earth metal sulphides, alkali and alkaline earth metal salts of silicates, alkali and alkaline earth metal salts of aluminates, water soluble or water dispersible organic amines, polymeric amine, amino alcohols, or combinations thereof.
摘要翻译：提供了包含碱溶胀性胶乳和pH增加材料的密封剂组合物及其使用方法来维护井筒。在一个实施方案中，密封剂组合物可用于井眼中，并且包括碱溶胀性胶乳和pH增加材料。密封剂组合物可以具有约7至约14的pH。在其它实施方案中，pH增加材料包括产生碱的材料。碱性物质可以包括碱金属和碱土金属碳酸盐，碱金属和碱土金属的碳酸氢盐，碱金属和碱土金属氢氧化物，碱金属和碱土金属氧化物，碱金属和碱土金属磷酸盐，碱金属和碱土金属磷酸氢盐，碱金属和碱土金属硫化物，硅酸盐的碱金属和碱土金属盐，铝酸盐的碱金属和碱土金属盐，水溶性或水分散性有机胺，聚合胺，氨基醇或其组合。

7. 发明授权

US08383558B2 Oilwell sealant compositions comprising alkali swellable latex 失效
公开(公告)号：US08383558B2
公开(公告)日：2013-02-26
申请号：US12357335
申请日：2009-01-21
申请人： B. Raghava Reddy , Mark R. Savery , Krishna M. Ravi , Donald L. Whitfill
发明人： B. Raghava Reddy , Mark R. Savery , Krishna M. Ravi , Donald L. Whitfill
IPC分类号： E21B33/13 , E21B43/00 , C09K8/00
CPC分类号： C09K8/5045 , C09K8/506 , C09K8/508
摘要： Sealant compositions comprising an alkali swellable latex and a pH increasing material and methods of using the same to service a wellbore are provided. In one embodiment, the sealant composition can be used in a wellbore and includes an alkali swellable latex and a pH increasing material. The sealant composition can have a pH of from about 7 to about 14. In other embodiments, the pH increasing material includes a base-producing material. The base-producing material can include alkali and alkali earth metal carbonates, alkali and alkali earth metal bicarbonates, alkali and alkali earth metal hydroxides, alkali and alkali earth metal oxides, alkali and alkali earth metal phosphates, alkali and alkali earth metal hydrogen phosphates, alkali and alkaline earth metal sulphides, alkali and alkaline earth metal salts of silicates, alkali and alkaline earth metal salts of aluminates, water soluble or water dispersible organic amines, polymeric amine, amino alcohols, or combinations thereof.

8. 发明授权

US06837316B2 Methods of consolidating formations 失效
标题翻译：巩固地层的方法
公开(公告)号：US06837316B2
公开(公告)日：2005-01-04
申请号：US10716730
申请日：2003-11-19
申请人： B. Raghava Reddy , Larry S. Eoff , Donald L. Whitfill , J. Michael Wilson , Denise Berryhill , Russel M. Fitzgerald , Thomas E. Becker , Jimmie D. Weaver
发明人： B. Raghava Reddy , Larry S. Eoff , Donald L. Whitfill , J. Michael Wilson , Denise Berryhill , Russel M. Fitzgerald , Thomas E. Becker , Jimmie D. Weaver
IPC分类号： C09K8/12 , C09K8/24 , C09K8/508 , C09K8/512 , C09K8/575 , E21B21/00 , C09K7/02 , E21B33/138
CPC分类号： C09K8/12 , C09K8/24 , C09K8/508 , C09K8/512 , C09K8/5751 , Y10S507/903
摘要： Methods of consolidating formations include drilling a well bore with a drilling fluid that comprises water, a polymeric cationic catalyst which is adsorbed on minerals and rocks in weak unconsolidated zones or formations and then further contacting the unconsolidated formation with a treating fluid comprising a water soluble or dispersible polymer which is cross-linked by a thermoset resin and causes the resin to be hard and tough when cured, and a water soluble or dispersible thermoset resin which cross-links the polymer, is catalyzed and cured by the catalyst and consolidates the weak zone or formation so that sloughing is prevented.
摘要翻译：整合地层的方法包括用包括水的钻井液钻井井，在弱的非固结区或地层中吸附在矿物和岩石上的聚合阳离子催化剂，然后使未固结的地层与包含水溶性或通过热固性树脂交联并使树脂固化时硬度和韧性高的可分散聚合物，与聚合物交联的水溶性或分散性热固性树脂被催化剂催化固化，并使弱区或形成，以防止脱落。

9. 发明授权

US06702044B2 Methods of consolidating formations or forming chemical casing or both while drilling 失效
标题翻译：在钻孔时整合地层或形成化学套管或两者的方法
公开(公告)号：US06702044B2
公开(公告)日：2004-03-09
申请号：US10170400
申请日：2002-06-13
申请人： B. Raghava Reddy , Larry S. Eoff , Donald L. Whitfill , J. Michael Wilson , Denise Berryhill , Russel M. Fitzgerald , Thomas E. Becker , Jimmie D. Weaver
发明人： B. Raghava Reddy , Larry S. Eoff , Donald L. Whitfill , J. Michael Wilson , Denise Berryhill , Russel M. Fitzgerald , Thomas E. Becker , Jimmie D. Weaver
IPC分类号： E21B2100
CPC分类号： C09K8/12 , C09K8/24 , C09K8/508 , C09K8/512 , C09K8/5751 , Y10S507/903
摘要： Methods of consolidating formations or forming chemical casing or both while drilling are provided. One method of the invention comprises drilling a well bore with a drilling fluid comprised of water, a polymeric cationic catalyst which is adsorbed on weak zones or formations formed of unconsolidated clays, shale, sand stone and the like, a water soluble or dispersible polymer which is cross-linked by a thermoset resin and causes the resin to be hard and tough when cured, a particulate curable solid thermoset resin, a water soluble thermoset resin, and a delayed dispersible acid catalyst for curing the solid and water soluble resins. The drilling fluid forms a filter cake on the walls of the well bore that cures and consolidates the unconsolidated weak zones and formations penetrated by the well bore so that sloughing is prevented and forms a hard and tough cross-linked chemical casing on the walls of the well bore.
摘要翻译：提供了在钻孔时固结地层或形成化学套管或两者的方法。本发明的一种方法包括用包括水的钻井液钻井井，吸附在由非固结粘土，页岩，砂石等形成的弱区或地层上的聚合阳离子催化剂，水溶性或分散性聚合物，通过热固性树脂交联并使树脂在固化时硬而坚韧，颗粒固化固体热固性树脂，水溶性热固性树脂和用于固化和水溶性树脂的延迟分散酸催化剂。钻井液在井眼的壁上形成滤饼，其固化和固结由井眼穿透的未固结的弱区和结构，从而防止脱落并形成硬的和坚韧的交联化学壳体井眼。

10. 发明授权

US06848519B2 Methods of forming a chemical casing 失效
标题翻译：形成化学外壳的方法
公开(公告)号：US06848519B2
公开(公告)日：2005-02-01
申请号：US10717400
申请日：2003-11-19
申请人： B. Raghava Reddy , Larry S. Eoff , Donald L. Whitfill , J. Michael Wilson , Denise Berryhill , Russel M. Fitzgerald , Thomas E. Becker , Jimmie D. Weaver
发明人： B. Raghava Reddy , Larry S. Eoff , Donald L. Whitfill , J. Michael Wilson , Denise Berryhill , Russel M. Fitzgerald , Thomas E. Becker , Jimmie D. Weaver
IPC分类号： C09K8/12 , C09K8/24 , C09K8/508 , C09K8/512 , C09K8/575 , E21B21/00 , C09K7/02 , E21B33/138
CPC分类号： C09K8/12 , C09K8/24 , C09K8/508 , C09K8/512 , C09K8/5751 , Y10S507/903
摘要： Methods of forming chemical casings include drilling a well bore with a drilling fluid having a pH in the range of from about 6 to 10 and comprising water, a water soluble or water dispersible polymer which is capable of being cross-linked by a thermoset resin and causing the resin to be hard and tough when cured, a particulate curable solid thermoset resin, a water soluble or dispersible thermoset resin, and a delayed dispersible acid-catalyst for curing the solid thermoset resin and the water soluble thermoset resin, whereby the drilling fluid forms a filter cake on the walls of the wellbore that cures into a hard and tough cross-linked chemical casing thereon.
摘要翻译：形成化学壳体的方法包括用具有约6至10范围内的pH的钻井液钻井孔，并且包括能够通过热固性树脂交联的水，水溶性或水分散性聚合物，以及导致树脂在固化时硬而坚韧，颗粒状可固化固体热固性树脂，水溶性或分散性热固性树脂和用于固化固体热固性树脂和水溶性热固性树脂的延迟分散酸催化剂，由此钻井液在井眼的壁上形成滤饼，其固化成硬质且坚韧的交联化学外壳。

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