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    Methods of generating a gas in a plugging composition to improve its sealing ability in a downhole permeable zone
    2.
    发明授权
    Methods of generating a gas in a plugging composition to improve its sealing ability in a downhole permeable zone 有权
    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。

    Cement compositions comprising aromatic sulfonated polymers and methods of using the same
    4.
    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：US07438758B2

    公开(公告)日：2008-10-21

    申请号：US11780192

    申请日：2007-07-19

    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： C04B24/20

    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。

    Systems and Methods for In Situ Monitoring of Cement Slurry Locations and Setting Processes Thereof
    7.
    发明申请
    Systems and Methods for In Situ Monitoring of Cement Slurry Locations and Setting Processes Thereof 审中-公开
    水泥浆料位置现场监测系统与方法及设定流程

    公开(公告)号：US20140076549A1

    公开(公告)日：2014-03-20

    申请号：US13615681

    申请日：2012-09-14

    申请人： Michael T. Pelletier ,  Christopher Michael Jones ,  B. Raghava Reddy ,  Ashok K. Santra

    发明人： Michael T. Pelletier ,  Christopher Michael Jones ,  B. Raghava Reddy ,  Ashok K. Santra

    IPC分类号： E21B47/005

    CPC分类号： E21B47/0005

    摘要： Optical analysis systems may be useful in monitoring fluids relating to cementing operations in or near real-time, e.g., for location and/or the status of a cement setting process. For example, method may involve containing a cement slurry within a flow path, the cement slurry having a chemical reaction occurring therein; and optically interacting the cement slurry with an integrated computational element, thereby generating an output signal corresponding to a characteristic of the chemical reaction.

    摘要翻译： 光学分析系统可用于监测或接近实时地，例如用于水泥固定过程的位置和/或状态的与固井操作相关的流体。 例如，方法可以包括在流动路径内容纳水泥浆料，其中发生化学反应的水泥浆料; 并用积分的计算元素光学相互作用水泥浆料，由此产生对应于化学反应特性的输出信号。

    Systems and Methods for Detecting Microannulus Formation and Remediation
    8.
    发明申请
    Systems and Methods for Detecting Microannulus Formation and Remediation 审中-公开
    检测微生物形成和修复的系统和方法

    公开(公告)号：US20140076550A1

    公开(公告)日：2014-03-20

    申请号：US13615714

    申请日：2012-09-14

    申请人： Michael T. Pelletier ,  Christopher Michael Jones ,  B. Raghava Reddy ,  Ashok K. Santra

    发明人： Michael T. Pelletier ,  Christopher Michael Jones ,  B. Raghava Reddy ,  Ashok K. Santra

    IPC分类号： E21B47/005

    CPC分类号： E21B33/14 ,  E21B47/123 ,  G01N21/47

    摘要： Optical analysis systems may be useful in detecting microannulus formation in a wellbore casing and remediating a microannulus. In some instances, a system may include a cement sheath disposed about and in contact with at least a portion of an exterior surface of a casing; and at least one optical computing device arranged coupled to the casing, the at least one optical computing device having at least one integrated computational element configured to optically interact with a material of interest and thereby generate optically interacted light, and at least one detector arranged to receive the optically interacted light and generate an output signal corresponding to a characteristic of the material of interest, the material of interest comprising at least one selected from the group consisting of the cement sheath, a displacement composition disposed between the cement sheath and the exterior surface of the casing, and any combination thereof.

    摘要翻译： 光学分析系统可用于检测井眼套管中的微小球形成并修复微量元素。 在一些情况下，系统可以包括设置在壳体的外表面的至少一部分周围并与其接触的水泥护套; 以及至少一个耦合到所述壳体的光学计算设备，所述至少一个光学计算设备具有至少一个集成的计算元件，其被配置为与感兴趣的材料光学相互作用，从而产生光学相互作用的光，以及至少一个检测器， 接收光学相互作用的光并产生对应于感兴趣材料的特征的输出信号，感兴趣的材料包括选自由水泥护套组成的组中的至少一种，置于水泥护套和外表面之间的置换组合物 的壳体，以及它们的任何组合。

    Cement compositions for reducing gas or water migration and methods of using the same
    10.
    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。