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    High temperature viscosifying and fluid loss controlling additives for well cements, well cement compositions and methods
    93.
    发明授权
    High temperature viscosifying and fluid loss controlling additives for well cements, well cement compositions and methods 失效
    高温增稠和失水控制添加剂用于水泥，水泥组合物和方法

    公开(公告)号：US06770604B2

    公开(公告)日：2004-08-03

    申请号：US10071076

    申请日：2002-02-08

    申请人： B. Raghava Reddy ,  Wendell D. Riley

    发明人： B. Raghava Reddy ,  Wendell D. Riley

    IPC分类号： E21B3313

    CPC分类号： C04B28/02 ,  C04B24/163 ,  C04B2103/44 ,  C04B2103/46 ,  C04B2111/763 ,  C09K8/46 ,  C09K8/487

    摘要： A high temperature viscosifying and fluid loss controlling additive for use in well cements, well cement compositions including the additive and methods of using the compositions are provided. The well cement compositions of this invention are comprised of a hydraulic cement, water and a viscosifying and fluid loss controlling additive comprising a mixture of a polymer comprised of at least one monomer which is calcium tolerant, anionic and disperses basic cement slurries, at least one monomer which hydrolyzes in basic cement slurries to generate anionic carboxylate groups that bind with calcium and viscosify the slurries and at least one monomer which generates non-ionic pendant groups on the polymer upon hydrolyzing in basic cement slurries to prevent polymer precipitation and a homopolymer of a monomer which hydrolyzes in basic cement slurries to generate anionic carboxylate groups that bind with calcium, viscosify the slurries and prevent settling in the slurries.

    摘要翻译： 提供了一种用于水泥粘结剂的高温增粘和流失控制添加剂，包括添加剂的井水泥组合物和使用该组合物的方法。 本发明的井眼水泥组合物包括水硬性水泥，水和增稠和流失失控控制添加剂，其包括由至少一种耐钙，阴离子和分散碱性水泥浆料的至少一种单体组成的聚合物的混合物，至少一种 在碱性水泥浆中水解以产生阴离子羧酸盐基团的单体，其与钙结合并使浆液和至少一种在碱性水泥浆中水解后产生非离子侧基的单体粘合，以防止聚合物沉淀和均聚物 在碱性水泥浆中水解产生与钙结合的阴离子羧酸盐基团的单体，使浆料粘稠并防止浆料沉降。

    Well drilling and servicing fluids and methods of removing filter cake deposited thereby
    94.
    发明授权
    Well drilling and servicing fluids and methods of removing filter cake deposited thereby 有权
    钻井和维修井液以及从中除去滤饼的方法

    公开(公告)号：US06737385B2

    公开(公告)日：2004-05-18

    申请号：US10117373

    申请日：2002-04-05

    申请人： Bradley L. Todd ,  B. Raghava Reddy ,  James V. Fisk, Jr. ,  James D. Kercheville

    发明人： Bradley L. Todd ,  B. Raghava Reddy ,  James V. Fisk, Jr. ,  James D. Kercheville

    IPC分类号： C09K702

    CPC分类号： C09K8/10 ,  C09K8/08 ,  C09K8/12 ,  C09K8/52 ,  C09K2208/18

    摘要： Well drilling and servicing fluids for use in producing formations and methods of removing filter cake therefrom are provided. The methods basically comprise using a drilling or servicing fluid comprised of water, a density increasing water soluble salt, a fluid loss control agent, a hydratable polymer solid suspending agent and a particulate solid bridging agent which is soluble in an aqueous ammonium salt solution. Thereafter, the filter cake deposited by the drilling or servicing fluid is contacted with a clean-up solution comprised of water and an ammonium salt for a period of time such that the bridging agent is dissolved thereby.

    摘要翻译： 提供了用于生产地层的钻井和维修液以及从其中除去滤饼的方法。 这些方法基本上包括使用由水，密度增加的水溶性盐，流体损失控制剂，可水合的聚合物固体悬浮剂和可溶于铵盐水溶液的颗粒状固体桥连剂组成的钻井或维修流体。 此后，由钻井或维修流体沉积的滤饼与由水和铵盐组成的清理溶液接触一段时间，以使桥连剂溶解。

    Methods of consolidating formations or forming chemical casing or both while drilling
    95.
    发明授权
    Methods of consolidating formations or forming chemical casing or both while drilling 失效
    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。

    Well drilling and servicing fluids and methods of removing filter cake deposited thereby
    97.
    发明授权
    Well drilling and servicing fluids and methods of removing filter cake deposited thereby 有权
    钻井和维修井液以及从中除去滤饼的方法

    公开(公告)号：US06422314B1

    公开(公告)日：2002-07-23

    申请号：US09629959

    申请日：2000-08-01

    申请人： Bradley L. Todd ,  B. Raghava Reddy ,  James V. Fisk, Jr. ,  James D. Kercheville

    发明人： Bradley L. Todd ,  B. Raghava Reddy ,  James V. Fisk, Jr. ,  James D. Kercheville

    IPC分类号： E21B3706

    CPC分类号： C09K8/10 ,  C09K8/08 ,  C09K8/12 ,  C09K8/52 ,  C09K2208/18

    摘要： Well drilling and servicing fluids for use in producing formations and methods of removing filter cake therefrom are provided. The methods basically comprise using a drilling or servicing fluid comprised of water, a density increasing water soluble salt, a fluid loss control agent, a hydratable polymer solid suspending agent and a particulate solid bridging agent which is soluble in an aqueous ammonium salt solution. Thereafter, the filter cake deposited by the drilling or servicing fluid is contacted with a clean-up solution comprised of water and an ammonium salt for a period of time such that the bridging agent is dissolved thereby.

    摘要翻译： 提供了用于生产地层的钻井和维修液以及从其中除去滤饼的方法。 这些方法基本上包括使用由水，密度增加的水溶性盐，流体损失控制剂，可水合的聚合物固体悬浮剂和可溶于铵盐水溶液的颗粒状固体桥连剂组成的钻井或维修流体。 此后，由钻井或维修流体沉积的滤饼与由水和铵盐组成的清理溶液接触一段时间，以使桥连剂溶解。

    Methods of cementing in subterranean zones
    98.
    发明授权
    Methods of cementing in subterranean zones 失效
    在地下区域固井的方法

    公开(公告)号：US06419016B1

    公开(公告)日：2002-07-16

    申请号：US09675644

    申请日：2000-09-29

    申请人： B. Raghava Reddy

    发明人： B. Raghava Reddy

    IPC分类号： E21B33138

    CPC分类号： C04B28/02 ,  C04B24/28 ,  C04B2103/0072 ,  C04B2103/22 ,  C09K8/467 ,  Y10S507/905 ,  C04B14/06 ,  C04B38/10 ,  C04B2103/48

    摘要： Improved methods of cementing in subterranean zones penetrated by well bores are provided. The methods are basically comprised of the steps of preparing a cement composition comprised of a hydraulic cement, a biodegradable, substantially non-dispersing set retarder of low anionic character comprised of polysuccinimide and sufficient water to form a slurry, placing said cement composition in said subterranean zone and allowing said cement composition to set into a solid mass therein.

    摘要翻译： 提供了改进的穿孔井下地下区固井方法。 所述方法基本上包括以下步骤：制备水泥组合物，所述水泥组合物包含由聚琥珀酰亚胺和足够水形成浆料的低阴离子特性的水硬性水泥，可生物降解的，基本上不分散的阻滞剂，将所述水泥组合物置于所述地下 并使所述水泥组合物在其中固化成固体。

    Methods for cementing in a subterranean formation using a cement composition containing a set retarder of a polyester
    99.
    发明授权
    Methods for cementing in a subterranean formation using a cement composition containing a set retarder of a polyester 有权
    使用含有聚酯的阻滞剂的水泥组合物在地下地层中固井的方法

    公开(公告)号：US09150774B2

    公开(公告)日：2015-10-06

    申请号：US13207647

    申请日：2011-08-11

    申请人： B. Raghava Reddy ,  Drew Gaugler ,  Russel Fitzgerald

    发明人： B. Raghava Reddy ,  Drew Gaugler ,  Russel Fitzgerald

    IPC分类号： C09K8/467 ,  C04B28/02 ,  C04B28/06 ,  C04B103/00 ,  C04B103/22 ,  C04B103/44

    CPC分类号： C09K8/467 ,  C04B28/02 ,  C04B28/06 ,  C04B2103/0073 ,  C04B2103/22 ,  C04B2103/44 ,  C04B24/283

    摘要： According to an embodiment, a cement composition for use in an oil or gas well, the cement composition comprises: cement; water; and a polymer, wherein the polymer: (i) comprises a monomer or monomers capable of forming a polyester; and (ii) is capable of providing a thickening time of at least 2 hours at a temperature of 400° F. (204.4° C.) and a pressure of greater than about 500 psi (3.4 MPa) for a test composition consisting essentially of: the cement; the water; and the polymer, and in the same proportions as in the cement composition. According to another embodiment, a method of cementing in a subterranean formation comprises: introducing the cement composition into the subterranean formation; and allowing the cement composition to set.

    摘要翻译： 根据一个实施方案，用于油井或气井的水泥组合物，所述水泥组合物包括：水泥; 水; 和聚合物，其中所述聚合物：（i）包含能够形成聚酯的单体或单体; 和（ii）能够在400°F（204.4℃）的温度和大于约500psi（3.4MPa）的压力下提供至少2小时的增稠时间，所述测试组合物基本上由 ：水泥 水; 和聚合物，并且以与水泥组合物中相同的比例。 根据另一个实施例，一种在地层中固井的方法包括：将水泥组合物引入地层; 并允许水泥组合物固化。