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240 条记录 (耗时 0.034 秒)

    Cement compositions for reducing gas or water migration and methods of using the same
    41.
    发明授权
    Cement compositions for reducing gas or water migration and methods of using the same 失效
    用于还原气体或水迁移的水泥组合物及其使用方法

    公开(公告)号：US07325611B2

    公开(公告)日：2008-02-05

    申请号：US11372001

    申请日：2006-03-09

    申请人： Ashok K. Santra ,  Mfon Anita ,  B. Raghava Reddy

    发明人： Ashok K. Santra ,  Mfon Anita ,  B. Raghava Reddy

    IPC分类号： E21B33/13

    CPC分类号： C04B24/20 ,  C04B28/02 ,  C09K8/467 ,  C04B2103/50 ,  C04B24/163

    摘要： A method of cementing a wellbore comprising preparing a cement composition comprising a water-soluble aromatic sulfonated polymer, and placing the cement composition into the wellbore, wherein the cement composition develops a compressive strength of greater than about zero in less time than a similar cement composition having a comparable thickening time and lacking a water-soluble aromatic sulfonated polymer. A cement composition comprising a water-soluble aromatic sulfonated polymer, wherein the cement composition develops a compressive strength of greater than about zero in less time than a similar cement composition having comparable thickening time and lacking a water-soluble aromatic sulfonated polymer.

    摘要翻译： 一种固井井的方法，包括制备包含水溶性芳族磺化聚合物的水泥组合物，并将该水泥组合物置于井筒中，其中该水泥组合物在比相似的水泥组合物更短的时间内产生大于约零的抗压强度 具有可比较的增稠时间和缺乏水溶性芳香族磺化聚合物。 一种水泥组合物，其包含水溶性芳族磺化聚合物，其中所述水泥组合物在比具有相当的增稠时间和不含水溶性芳族磺化聚合物的类似水泥组合物的时间内在较短的时间内产生大于约零的压缩强度。

    Cement compositions comprising aromatic sulfonated polymers and methods of using the same
    44.
    发明授权
    Cement compositions comprising aromatic sulfonated polymers and methods of using the same 有权
    包含芳族磺化聚合物的水泥组合物及其使用方法

    公开(公告)号：US07290613B2

    公开(公告)日：2007-11-06

    申请号：US10966937

    申请日：2004-10-15

    申请人： Ashok K. Santra ,  B. Raghava Reddy ,  Russell M. Fitzgerald

    发明人： Ashok K. Santra ,  B. Raghava Reddy ,  Russell M. Fitzgerald

    IPC分类号： E21B33/138

    CPC分类号： C04B28/02 ,  C04B24/163 ,  C09K8/493

    摘要： A method of servicing a wellbore that penetrates a subterranean formation includes displacing a cement composition comprising an aromatic sulfonated polymer into the wellbore and allowing the cement composition to set. In an embodiment, a transition time of the cement composition is less than or equal to about 60 minutes, alternatively less than or equal to about 50 minutes, less than or equal to about 40 minutes, less than or equal to about 30 minutes, less than or equal to about 20 minutes, or less than or equal to about 10 minutes. Thus, the transition time may be short enough to inhibit a substantial amount of gas migration into the cement composition before it sets. In yet another embodiment, the cement composition exhibits a viscosity that increases from a value of 35 Bc (Bearden units) to about 100 Bc in about 10 minutes or less when the cement composition sets.

    摘要翻译： 维护渗透地下地层的井筒的方法包括将包含芳族磺化聚合物的水泥组合物置于井眼中并使水泥组合物凝固。 在一个实施方案中，水泥组合物的过渡时间小于或等于约60分钟，或者小于或等于约50分钟，小于或等于约40分钟，小于或等于约30分钟，更少 大于或等于约20分钟，或小于或等于约10分钟。 因此，过渡时间可能足够短以在其组合之前抑制大量气体迁移到水泥组合物中。 在另一个实施方案中，当水泥组合物组合时，水泥组合物表现出在大约10分钟或更短时间内从35Bc（Bearden单元）的值增加到约100Bc的粘度。

    Additive packages for removing oil from solid materials recovered from a well bore
    45.
    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。

    Processes for removing oil from solid wellbore materials and produced water
    46.
    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
    47.
    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。

    Well treatment fluid and methods with oxidized polysaccharide-based polymers
    49.
    发明授权
    Well treatment fluid and methods with oxidized polysaccharide-based polymers 失效
    处理液和氧化多糖类聚合物的方法

    公开(公告)号：US07007752B2

    公开(公告)日：2006-03-07

    申请号：US10727365

    申请日：2003-12-04

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

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

    IPC分类号： E21B43/00

    CPC分类号： C09K8/12 ,  C09K8/512 ,  C09K8/685 ,  C09K8/887

    摘要： The present invention provides a well treatment fluid for use in a well, the well treatment fluid comprising water; an amine-based polymer; an polysaccharide-based polymer; and an oxidizing agent that is capable of at least partially oxidizing at least the polysaccharide-based polymer. The present invention also provides a method of treating a subterranean formation penetrated by a wellbore, the method comprising the steps of: (a) forming a well treatment fluid comprising water; an amine-based polymer; a polysaccharide-based polymer; and an oxidizing agent that is capable of at least partially oxidizing at least a portion of the polysaccharide-based polymer; and (b) contacting the well treatment fluid with the subterranean formation. The present invention also provides a method of treating a subterranean formation penetrated by a wellbore, the method comprising the steps of: (a) forming a well treatment fluid comprising water; an amine-based polymer; and a polysaccharide-based polymer; (b) contacting the subterranean formation with the well treatment fluid; and (c) contacting the subterranean formation with an oxidizing agent that is capable of at least partially oxidizing at least a portion of the polysaccharide-based polymer in the well treatment fluid present therein.

    摘要翻译： 本发明提供了用于井的井处理流体，井处理流体包括水; 胺基聚合物; 多糖类聚合物; 以及能够至少部分氧化至少多糖类聚合物的氧化剂。 本发明还提供了一种处理由井筒渗透的地层的方法，所述方法包括以下步骤：（a）形成包含水的井处理流体; 胺基聚合物; 多糖类聚合物; 以及能够至少部分氧化所述多糖类聚合物的至少一部分的氧化剂; 和（b）使井处理流体与地层接触。 本发明还提供了一种处理由井筒渗透的地层的方法，所述方法包括以下步骤：（a）形成包含水的井处理流体; 胺基聚合物; 和多糖类聚合物; （b）使地层与井处理流体接触; 和（c）使所述地下层与氧化剂接触，所述氧化剂能够至少部分地氧化存在于其中的井处理流体中至少一部分多糖基聚合物。