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    Cement compositions containing flexible, compressible beads and methods of cementing in subterranean formations
    41.
    发明授权
    Cement compositions containing flexible, compressible beads and methods of cementing in subterranean formations 有权
    含有柔性可压缩珠粒的水泥组合物和在地层中固井的方法

    公开(公告)号：US07543642B2

    公开(公告)日：2009-06-09

    申请号：US10350533

    申请日：2003-01-24

    申请人： B. Raghava Reddy ,  Krishna M. Ravi ,  Michael J. Szymanski

    发明人： B. Raghava Reddy ,  Krishna M. Ravi ,  Michael J. Szymanski

    IPC分类号： E21B33/13

    CPC分类号： C04B20/04 ,  C04B20/0032 ,  C04B28/02 ,  C09K8/42 ,  C09K8/46 ,  C09K8/473 ,  Y02W30/94 ,  C04B16/08 ,  C04B14/104 ,  C04B16/082 ,  C04B18/146 ,  C04B22/124 ,  C04B2103/20 ,  C04B2103/48 ,  C04B2103/50 ,  C04B24/2688 ,  C04B24/2641

    摘要： Cement compositions comprising flexible, compressible beads, processes for preparing such cement compositions, and methods of cementing in subterranean formations using such cement compositions. One or more flexible, compressible beads are mixed with the cement before pumping the cement into a well bore. The flexible, compressible beads 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. The flexible, compressible beads may be heated to expand the beads before mixing with the cement such that the ensuing cement composition will have a desired density. Non-flexible beads such as spherulites may also be added to the cement compositions.

    摘要翻译： 包含柔性可压缩珠粒的水泥组合物，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，将一个或多个柔性可压缩的珠与水泥混合。 柔性可压缩珠粒优选由弹性材料如甲基丙烯酸甲酯和丙烯腈的共聚物组成; 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。 在与水泥混合之前，可以加热柔性可压缩珠粒以使珠粒膨胀，使得随后的水泥组合物具有所需的密度。 也可以将非柔性珠如球晶添加到水泥组合物中。

    METHODS TO ENHANCE GAS PRODUCTION FOLLOWING A RELATIVE-PERMEABILITY-MODIFIER TREATMENT
    42.
    发明申请
    METHODS TO ENHANCE GAS PRODUCTION FOLLOWING A RELATIVE-PERMEABILITY-MODIFIER TREATMENT 有权
    相对渗透性改性剂处理方法提高气体生产

    公开(公告)号：US20090120642A1

    公开(公告)日：2009-05-14

    申请号：US11985154

    申请日：2007-11-14

    申请人： Larry S. Eoff ,  B. Raghava Reddy ,  Eldon D. Dalrymple ,  Don M. Everett ,  Mauricio Gutierrez ,  Danhua Zhang

    发明人： Larry S. Eoff ,  B. Raghava Reddy ,  Eldon D. Dalrymple ,  Don M. Everett ,  Mauricio Gutierrez ,  Danhua Zhang

    IPC分类号： E21B43/267

    CPC分类号： C09K8/885 ,  C09K8/5083 ,  C09K8/5086 ,  C09K8/602 ,  C09K8/882

    摘要： Provided embodiments relate to introducing a water-drainage-rate-enhancing agent into a subterranean formation to enhance gas production following a relative-permeability-modifier treatment to decrease undesired water production. An exemplary embodiment provides a method of treating a subterranean formation such that initiation of gas production is enhanced following the treatment, the method comprising: introducing a relative-permeability modifier into at least a portion of the subterranean formation such that the relative-permeability modifier reduces permeability of the portion to aqueous fluids; and introducing a water-drainage-rate-enhancing agent into at least a portion of the subterranean formation. Another exemplary embodiment provides a treatment fluid comprising a carrier fluid, a relative-permeability modifier, and a water-drainage-rate-enhancing agent.

    摘要翻译： 所提供的实施方案涉及将引入排水速率的剂引入地层，以在相对渗透调节剂处理之后增强气体产生，以减少不期望的水分产生。 一个示例性的实施方案提供了一种处理地层的方法，使得在处理之后使气体产生的开始得到增强，所述方法包括：将相对渗透性改性剂引入到地层的至少一部分中，使得相对渗透调节剂降低 该部分对含水流体的渗透性; 并将排水速率增强剂引入所述​​地层的至少一部分。 另一个示例性实施方案提供了包含载体流体，相对渗透性改性剂和排水速率增强剂的处理流体。

    Self repairing cement compositions and methods of using same
    43.
    发明授权
    Self repairing cement compositions and methods of using same 有权
    自修水泥组合物及其使用方法

    公开(公告)号：US07530396B1

    公开(公告)日：2009-05-12

    申请号：US12107416

    申请日：2008-04-22

    申请人： B. Raghava Reddy ,  Feng Liang ,  Russell M. Fitzgerald ,  David Meadows

    发明人： B. Raghava Reddy ,  Feng Liang ,  Russell M. Fitzgerald ,  David Meadows

    IPC分类号： E21B33/13

    CPC分类号： C09K8/467 ,  C04B24/163 ,  C04B24/2641 ,  C04B24/2652 ,  C04B24/2676 ,  C04B24/42

    摘要： A method of servicing a wellbore comprising placing a cement composition comprising a cementitious material, water, and an elastomeric material comprising a bonding polar group into a wellbore, and allowing the cement composition to set to form a set cement, wherein the elastomeric material has a phase transition temperature, exhibits cold flow behavior, or both at less than or equal to the bottom hole static temperature of the wellbore. A method of servicing a cased wellbore penetrating a formation, comprising introducing a self-repairing cementitious material into a wellbore, and allowing the cement to set, wherein upon a loss of structural integrity the set cement self-repairs, and wherein the loss of structural integrity comprises the formation of flow pathways for fluid migration in the cement and self-repair comprises obstructing potential pathways for fluid migration.

    摘要翻译： 一种维修井孔的方法，包括将包含粘结极性基团的水泥组合物，水和包含粘结极性基团的弹性体材料的水泥组合物放置在井眼中，并且允许水泥组合物凝固形成固定水泥，其中弹性体材料具有 相转变温度，表现出冷流行为，或两者都小于或等于井眼的井底静态温度。 一种对穿透地层的套管井眼进行维修的方法，包括将自修复的水泥质材料引入井眼中，并允许水泥固化，其中，在失去结构完整性的情况下，固定水泥自修复，并且其中结构损失 完整性包括形成用于水泥中流体迁移的流动路径，并且自我修复包括阻碍流体迁移的潜在途径。

    Methods of drilling wellbores using variable density fluids comprising coated elastic particles
    44.
    发明授权
    Methods of drilling wellbores using variable density fluids comprising coated elastic particles 有权
    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。

    Additive packages for removing oil from solid materials recovered from a well bore
    47.
    发明授权
    Additive packages for removing oil from solid materials recovered from a well bore 失效
    用于从井眼回收的固体材料中除去油的添加剂包装

    公开(公告)号：US07229952B2

    公开(公告)日：2007-06-12

    申请号：US10874977

    申请日：2004-06-23

    申请人： B. Raghava Reddy ,  Sears T. Dealy ,  Ian D. Robb

    发明人： B. Raghava Reddy ,  Sears T. Dealy ,  Ian D. Robb

    IPC分类号： C11D3/30

    CPC分类号： E21B21/068

    摘要： An additive package for removing oil from solid material recovered from a well bore, e.g., drill cuttings and produced sand, is provided. The additive package includes an aqueous acidic solution containing a polymer substituted with an amino group, a halogenating agent, and optionally one or more surfactants. The polymer substituted with an amino group is preferably chitosan, and the halogenating agent is preferably a sodium hypochlorite solution. A product of the reaction of the polymer and the halogenating agent, in conjunction with the surfactant when present, is capable of causing the separation of at least a portion of the oil from the solid material.

    摘要翻译： 提供了用于从井眼回收的固体材料中除去油的添加剂包，例如钻屑和生产的砂。 添加剂包括包含含有被氨基取代的聚合物的酸性水溶液，卤化剂和任选的一种或多种表面活性剂。 被氨基取代的聚合物优选为壳聚糖，卤化剂优选为次氯酸钠溶液。 与存在的表面活性剂一起，聚合物和卤化剂的反应的产物能够使至少一部分油与固体材料分离。

    Drilling fluid component
    48.
    发明授权
    Drilling fluid component 有权
    钻井液成分

    公开(公告)号：US07220708B2

    公开(公告)日：2007-05-22

    申请号：US10375787

    申请日：2003-02-27

    申请人： Frank Zamora ,  Larry S. Eoff ,  Eldon Dwyann Dalrymple ,  B. Raghava Reddy

    发明人： Frank Zamora ,  Larry S. Eoff ,  Eldon Dwyann Dalrymple ,  B. Raghava Reddy

    IPC分类号： C09K8/588 ,  C09K8/22 ,  E21B21/14

    CPC分类号： C09K8/32 ,  C09K8/035 ,  C09K8/12 ,  C09K8/5083

    摘要： A method and composition is provided for a relative permeability modifying polymer for use with drilling fluids that comprises a water soluble polymer formed from a hydrophobic or hydrophobically modified hydrophilic monomer and a hydrophilic monomer. In an alternative embodiment, a method is provided for producing a water soluble polymer formed from a hydrophilic monomer for use as a relative permeability modifying polymer.

    摘要翻译： 提供了一种用于与钻井液一起使用的相对渗透性改性聚合物的方法和组合物，其包含由疏水或疏水改性的亲水单体和亲水单体形成的水溶性聚合物。 在替代实施方案中，提供了一种用于制备由亲水性单体形成的用作相对渗透性改性聚合物的水溶性聚合物的方法。

    Processes for removing oil from solid wellbore materials and produced water
    49.
    发明授权
    Processes for removing oil from solid wellbore materials and produced water 有权
    从固体井眼材料和生产的水中除去油的工艺

    公开(公告)号：US07192527B2

    公开(公告)日：2007-03-20

    申请号：US10915023

    申请日：2004-08-10

    申请人： B. Raghava Reddy

    发明人： B. Raghava Reddy

    IPC分类号： C02F1/56

    CPC分类号： E21B21/068 ,  C02F1/26 ,  C02F1/56 ,  C02F1/681 ,  C02F1/70 ,  C02F1/76 ,  C02F2101/32 ,  C02F2101/325 ,  C02F2103/10 ,  C02F2305/04 ,  C10G1/00

    摘要： Processes for removing oil from a solid wellbore material such as drill cuttings or water such as produced by a subterranean formation include contacting the solid material/water with an amino-substituted polymer such as chitosan and a halogenating agent. The oil separates from the solid material and becomes bound within a flocculated solid. The flocculated solid containing the oil subsequently may be combined with a solvent of the amino-substituted polymer. Further, the flocculated solid may be contacted with a reducing agent, converting the flocculated solid back into the amino-substitute polymer and forming an oil-phase separate from the solvent-phase. The oil-phase may then be separated from the solvent phase and recovered. The solvent in which the amino-substituted polymer is dissolved may be recycled for treating more solid material removed from the well bore.

    摘要翻译： 从固体井筒材料如钻屑或水中除去油的方法，例如通过地层形成的方法包括使固体物质/水与氨基取代的聚合物如壳聚糖和卤化剂接触。 油从固体材料分离并结合在絮凝固体中。 随后含有油的絮凝固体可以与氨基取代的聚合物的溶剂组合。 此外，絮凝的固体可以与还原剂接触，将絮凝的固体转移回氨基取代聚合物，并形成与溶剂相分离的油相。 然后可以将油相与溶剂相分离并回收。 其中溶解有氨基取代的聚合物的溶剂可以再循环用于处理从井筒移除的更多固体材料。

    Methods of reducing water permeability for acidizing a subterranean formation
    50.
    发明授权
    Methods of reducing water permeability for acidizing a subterranean formation 有权
    降低渗透性以酸化地下地层的方法

    公开(公告)号：US07182136B2

    公开(公告)日：2007-02-27

    申请号：US10612271

    申请日：2003-07-02

    申请人： Eldon D. Dalrymple ,  Larry Eoff ,  B. Raghava Reddy ,  Jim Venditto

    发明人： Eldon D. Dalrymple ,  Larry Eoff ,  B. Raghava Reddy ,  Jim Venditto

    IPC分类号： E21B43/28 ,  E21B33/138

    CPC分类号： C09K8/76 ,  C09K8/68 ,  C09K8/882

    摘要： The present invention provides a method of stimulating a subterranean formation penetrated by a well. The formation has a water-bearing section and a hydrocarbon-bearing section. The method includes the steps of: (a) introducing into the formation an aqueous treatment fluid containing a hydrophobically-modified relative permeability modifier, and (b) introducing an acidizing treatment fluid into the formation. The hydrophobically-modified RPM can be formed and introduced into the formation in several ways. For example, the hydrophobically-modified RPM can be the reaction product of a hydrophilic polymer and a hydrophobic compound that are capable of reacting with each other. The hydrophilic polymer is a polymer containing reactive amino groups in the polymer backbone or as pendant groups, which are capable of reacting with a hydrophobic alkyl halide compound. The hydrophobically-modified RPM can include, for example, a polymer of DMAEMA quaternized with an alkyl halide, wherein the alkyl halide has an alkyl chain length of 6 to 22 carbons.

    摘要翻译： 本发明提供了一种刺激由井渗透的地层的方法。 该地层具有含水段和含烃段。 该方法包括以下步骤：（a）向地层中引入含有疏水改性的相对渗透性改性剂的水性处理流体，和（b）将酸化处理流体引入地层中。 疏水改性的RPM可以以几种方式形成并引入到地层中。 例如，疏水改性的RPM可以是能够彼此反应的亲水性聚合物和疏水性化合物的反应产物。 亲水性聚合物是在聚合物主链中含有反应性氨基的聚合物或能够与疏水性烷基卤化合物反应的侧基。 疏水改性的RPM可以包括例如用烷基卤季铵化的DMAEMA的聚合物，其中烷基卤具有6至22个碳的烷基链长度。