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    Methods of drilling a wellbore within a subsurface region and drilling control systems that perform the methods
    1.
    发明授权
    Methods of drilling a wellbore within a subsurface region and drilling control systems that perform the methods 有权

    公开(公告)号：US11111771B2

    公开(公告)日：2021-09-07

    申请号：US16022174

    申请日：2018-06-28

    Applicant: Krishnan Kumaran

    Inventor： Krishnan Kumaran

    IPC: E21B44/02 ,  E21B47/12 ,  E21B3/02 ,  E21B45/00 ,  E21B47/06

    Abstract: Methods of drilling a wellbore within a subsurface region and drilling control systems that perform the methods. The methods include accessing an objective map and calculating a plurality of critical points of the objective map. The methods also include scoring each critical point and selecting a selected critical point of the plurality of critical points. The selected critical point describes an estimated value of at least one drilling performance indicator for a selected value of at least one independent operational parameter. The methods further include operating the drilling rig at the selected value of the at least one independent operational parameter and, during the operating, determining an actual value of the at least one drilling performance indicator. The methods also include updating the objective map to generate an updated objective map and repeating at least a portion of the methods.

    FLAME INSTABILITY DETECTION AND IDENTIFICATION IN INDUSTRIAL FURNACES
    3.
    发明申请
    FLAME INSTABILITY DETECTION AND IDENTIFICATION IN INDUSTRIAL FURNACES 审中-公开
    工业炉火焰不稳定性检测与鉴定

    公开(公告)号：US20140172368A1

    公开(公告)日：2014-06-19

    申请号：US14101677

    申请日：2013-12-10

    Applicant: Weichang Li ,  Gary T. Dobbs ,  Limin Song ,  Peng Xu ,  Krishnan Kumaran ,  Mark M. Disko ,  Jeffrey M. Grenda ,  San Chhotray ,  Amy B. Herhold ,  Duane R. McGregor

    Inventor： Weichang Li ,  Gary T. Dobbs ,  Limin Song ,  Peng Xu ,  Krishnan Kumaran ,  Mark M. Disko ,  Jeffrey M. Grenda ,  San Chhotray ,  Amy B. Herhold ,  Duane R. McGregor

    IPC: G01M99/00 ,  G06F17/11

    CPC classification number: G01M99/00 ,  G05B23/024 ,  G06F17/11

    Abstract: Systems and methods for multi-channel detection of an instability in a furnace comprising a plurality of detectors are disclosed. Each of a plurality of detectors provides a first measurement related to the plurality of burners when the furnace is operating in a stable condition. A stable signal component representation is determined based on the first measurement from each of the plurality of detectors. Each of a plurality of detectors provides a second measurement related to the plurality of burners when the furnace is operating in an unknown state. An unstable signal component representation is determined based on the stable signal component representation and a second measurement from each of the plurality of detectors. An instability is detected based on the unstable signal component representation and an instability threshold.

    Abstract translation: 公开了一种用于多通道检测包括多个检测器的炉中的不稳定性的系统和方法。 当炉子处于稳定状态时，多个检测器中的每个检测器提供与多个燃烧器相关的第一测量。 基于来自多个检测器中的每一个的第一测量来确定稳定的信号分量表示。 当炉子处于未知状态时，多个检测器中的每个检测器提供与多个燃烧器相关的第二测量。 基于稳定的信号分量表示和来自多个检测器中的每一个的第二测量来确定不稳定的信号分量表示。 基于不稳定的信号分量表示和不稳定性阈值来检测不稳定性。

    Seismic Horizon Skeletonization
    4.
    发明申请
    Seismic Horizon Skeletonization 审中-公开
    地震地震骨骼化

    公开(公告)号：US20130151161A1

    公开(公告)日：2013-06-13

    申请号：US13757466

    申请日：2013-02-01

    Applicant: Matthias G. Imhof ,  Dominique G. Gillard ,  Stefan Hussenoeder ,  Pavel Dimitrov ,  Martin J. Terrell ,  Krishnan Kumaran

    Inventor： Matthias G. Imhof ,  Dominique G. Gillard ,  Stefan Hussenoeder ,  Pavel Dimitrov ,  Martin J. Terrell ,  Krishnan Kumaran

    IPC: G01V1/00 ,  G06F17/00

    CPC classification number: G01V1/003 ,  G01V1/301 ,  G01V2210/64 ,  G06F17/00

    Abstract: Method for analysis of hydrocarbon potential of subterranean regions by generating surfaces or geobodies and analyzing them for hydrocarbon indications. Reflection-based surfaces may be automatically created in a topologically consistent manner where individual surfaces do not overlap themselves and sets of multiple surfaces are consistent with stratigraphic superposition principles. Initial surfaces are picked from the seismic data (41), then broken into smaller parts (“patches”) that are predominantly topologically consistent (42), whereupon neighboring patches are merged in a topologically consistent way (43) to form a set of surfaces that are extensive and consistent (“skeleton”). Surfaces or geobodies thus extracted may be automatically analyzed and rated (214) based on a selected measure (213) such as AVO classification or one or more other direct hydrocarbon indicators (“DHI”). Topological consistency for one or more surfaces may be defined as no self overlap plus local and global consistency among multiple surfaces (52).

    Abstract translation: 通过产生表面或地球体分析地下区域的碳氢化合物潜力并分析烃类适应性的方法。 基于反射的表面可以以拓扑一致的方式自动创建，其中各个表面不重叠，多个表面的集合与地层叠加原理一致。 从地震数据（41）拾取初始表面，然后将其分解成主要是拓扑一致的较小部分（“补丁”）（42），于是以拓扑一致的方式（43）合并相邻的补丁以形成一组表面 这是广泛和一致的（“骨架”）。 可以基于诸如AVO分类或一个或多个其他直接碳氢化合物指示器（“DHI”）的选定措施（213）自动分析和评估（214）所提取的表面或地球体。 一个或多个表面的拓扑一致性可以被定义为在多个表面之间没有自重叠加局部和全局一致性（52）。

    Geophysical Data Texture Segmentation Using Double-Windowed Clustering Analysis
    6.
    发明申请
    Geophysical Data Texture Segmentation Using Double-Windowed Clustering Analysis 有权
    使用双窗口聚类分析的地球物理数据纹理分割

    公开(公告)号：US20120234554A1

    公开(公告)日：2012-09-20

    申请号：US13408419

    申请日：2012-02-29

    Applicant: Krishnan Kumaran

    Inventor： Krishnan Kumaran

    IPC: E21B43/00 ,  G06K9/46

    CPC classification number: G01V1/325

    Abstract: An automated method for texture segmentation (11) of geophysical data volumes, where texture is defined by double-window statistics of data values, the statistics being generated by a smaller pattern window moving around within a larger sampling window (12). A measure of “distance” between two locations is selected based on similarity between the double-window statistics from sampling windows centered at the two locations (13). Clustering of locations is then based on distance proximity (14).

    Abstract translation: 一种用于地球物理数据量的纹理分割（11）的自动化方法，其中纹理由数据值的双窗口统计定义，统计信息由更大的采样窗口（12）内移动的较小图案窗口生成。 基于以两个位置（13）为中心的采样窗口的双窗口统计信息之间的相似度来选择两个位置之间的“距离”的度量。 然后基于距离邻近度聚类（14）。

    Method for clustering of large high-dimensional datasets
    7.
    发明授权
    Method for clustering of large high-dimensional datasets 有权
    大型高维数据集聚类方法

    公开(公告)号：US08145672B2

    公开(公告)日：2012-03-27

    申请号：US12586827

    申请日：2009-09-29

    Applicant: Krishnan Kumaran

    Inventor： Krishnan Kumaran

    IPC: G06F17/00

    CPC classification number: G06K9/6218 ,  G06K9/6254 ,  G06K9/6262

    Abstract: The present invention is a method for clustering data points. The method represents data-points as vertices of a graph (a well-known mathematical construct) with distance-weighted arcs (lines joining each paid of points). The method then involves sorting the arcs in increasing order of their weights and adding them in ascending order, at each stage determining the number of connected components in the graph and the length of the longest added edge. The longest edge is a measure of the quality of the clustering (low values are good), and the connected components are the clusters.

    Abstract translation: 本发明是一种聚类数据点的方法。 该方法将数据点表示为具有距离加权弧的图形的顶点（公知的数学构造）（连接每个支付点的线）。 然后，该方法包括按照它们的权重的增加顺序对该弧进行排序，并且按照升序将它们相加，在每个阶段确定图中的连接分量的数量和最长加的边的长度。 最长的边缘是聚类质量的度量（低值是好的），连接的组件是集群。

    Methods and apparatus for control of optical switching arrays that minimize bright state switching
    10.
    发明授权
    Methods and apparatus for control of optical switching arrays that minimize bright state switching 有权
    用于控制光开关阵列的方法和装置，其使亮状态切换最小化

    公开(公告)号：US07050668B2

    公开(公告)日：2006-05-23

    申请号：US10464929

    申请日：2003-06-19

    Applicant: Krishnan Kumaran ,  Nachi K. Nithi ,  Carl Jeremy Nuzman

    Inventor： Krishnan Kumaran ,  Nachi K. Nithi ,  Carl Jeremy Nuzman

    IPC: G02B6/26 ,  G02B6/42

    CPC classification number: H04Q11/0005 ,  H04Q2011/0049

    Abstract: Techniques and systems for control of optical switching arrays are described. A switch array controller according to an aspect of the present invention operates so as to achieve reduced power consumption and maintain crosstalk within acceptable limits. Various rules are applied in order to insure that the desired criteria are met. In order to reduce transient effects, switching from one output to another is accomplished in a sequence chosen to maximize the number of transitions occurring in those portions of the array not carrying a signal, and to minimize the number of transitions that occur in portions of the array carrying the signal. Transitions are made in the portion of the array to which the signal will be directed, then a switch is transitioned between the old and new signal paths, and finally further transitions are made in the portion of the array within which the signal was previously directed.

    Abstract translation: 描述了用于控制光学开关阵列的技术和系统。 根据本发明的一个方面的开关阵列控制器的操作是为了实现降低的功耗并将串扰保持在可接受的限度内。 应用各种规则以确保满足期望的标准。 为了减少瞬态效应，从一个输出到另一个输出的切换是按照选择的序列来实现的，以使不发生信号的阵列的这些部分中发生的转换次数最大化，并且最小化在 阵列携带信号。 在信号将被引导到的阵列的部分中进行转换，然后在旧信号路径和新信号路径之间转换开关，并且最后在阵列的先前指向信号的部分中进行进一步的转换。

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