公开(公告)号：US20150275633A1

公开(公告)日：2015-10-01

申请号：US14597748

申请日：2015-01-15

Applicant: Randy C. Tolman ,  Federico A. Tavarez ,  Pavlin B. Entchev ,  Krishnan Kumaran ,  Michael C. Romer

Inventor： Randy C. Tolman ,  Federico A. Tavarez ,  Pavlin B. Entchev ,  Krishnan Kumaran ,  Michael C. Romer

IPC: E21B43/12 ,  E21B44/00 ,  E21B47/09 ,  E21B47/12 ,  E21B47/06 ,  E21B47/00

CPC classification number: E21B43/121 ,  E21B23/08 ,  E21B43/122

Abstract: Selectively actuated plungers and systems and methods including the same are disclosed herein. The methods include flowing a wellbore fluid stream in fluid contact with a plunger and in an uphole direction within a wellbore conduit while the plunger is located within a target region of the wellbore conduit. The methods further include maintaining the plunger in a low fluid drag state while a variable associated with the wellbore fluid stream is outside a threshold range and transitioning the plunger to a high fluid drag state responsive to the variable associated with the wellbore conduit being within the threshold range. The methods further include conveying the plunger in the uphole direction within the wellbore conduit. The systems include the plungers and/or hydrocarbon wells that include the plungers.

Abstract translation: 在此公开了选择性致动的柱塞及其系统和方法。 所述方法包括在柱塞位于井眼管道的目标区域内的同时使井眼流体流与柱塞流体接触并且在井筒管道内的井上方向流动。 所述方法还包括将柱塞保持在低流体阻力状态，同时与井筒流体流相关联的变量在阈值范围之外，并且响应于与井筒管道相关联的变量处于阈值范围内，将柱塞转变到高流体阻力状态 范围。 所述方法还包括在井眼管道内沿井上方向输送柱塞。 这些系统包括柱塞和/或包括柱塞的烃井。

公开(公告)号：US20130255939A1

公开(公告)日：2013-10-03

申请号：US13989726

申请日：2011-11-17

Applicant: Krishnan Kumaran ,  Niranjan A. Subrahmanya ,  Pavlin B. Entchev ,  Randy C. Tolman ,  Renzo Moises Angeles Boza

Inventor： Krishnan Kumaran ,  Niranjan A. Subrahmanya ,  Pavlin B. Entchev ,  Randy C. Tolman ,  Renzo Moises Angeles Boza

IPC: E21B23/00

CPC classification number: E21B23/00 ,  E21B41/00 ,  E21B43/116 ,  E21B47/0905

Abstract: Methods and apparatus for actuating a downhole tool in wellbore includes acquiring a CCL data set or log from the wellbore that correlates recorded magnetic signals with measured depth, and selects a location within the wellbore for actuation of a wellbore device. The CCL log is then downloaded into an autonomous tool. The tool is programmed to sense collars as a function of time, thereby providing a second CCL log. The autonomous tool also matches sensed collars with physical signature from the first CCL log and then self-actuates the wellbore device at the selected location based upon a correlation of the first and second CCL logs.

Abstract translation: 用于在井筒中致动井下工具的方法和装置包括从井眼获取CCL数据集或记录，其将记录的磁信号与测量的深度相关联，并且选择井筒内的位置以致动井筒装置。 然后将CCL日志下载到自主工具中。 该工具被编程为感测作为时间的函数的项圈，从而提供第二个CCL日志。 自主工具还将感测到的套环与来自第一CCL日志的物理签名相匹配，然后基于第一和第二CCL日志的相关性自动致动所选位置处的井眼设备。

公开(公告)号：US20130110485A1

公开(公告)日：2013-05-02

申请号：US13646363

申请日：2012-10-05

Applicant: Weichang Li ,  Niranjan A. Subrahmanya ,  Limin Song ,  Adam K. Usadi ,  Krishnan Kumaran ,  Peng Xu ,  Michael E. McCracken ,  Dale E. Fitz

Inventor： Weichang Li ,  Niranjan A. Subrahmanya ,  Limin Song ,  Adam K. Usadi ,  Krishnan Kumaran ,  Peng Xu ,  Michael E. McCracken ,  Dale E. Fitz

IPC: G06G7/48

CPC classification number: G01V99/005

Abstract: There is provided a system and method for determining interwell communication in a hydrocarbon-producing field that has a plurality of wells. An exemplary method comprises determining communication relationships for the plurality of wells using a multivariate dynamic joint analysis algorithm based on data representing properties of each of the plurality of wells. The multivariate dynamic joint analysis algorithm may employ a self-response of each of the plurality of wells and an interwell response between combinations of the plurality of wells. Data representative of the communication relationships is provided.

Abstract translation: 提供了一种用于确定具有多个井的烃生产领域中的井间通信的系统和方法。 示例性方法包括使用基于表示多个井中的每个井的属性的数据的多变量动态联合分析算法确定多个井的通信关系。 多变量动态联合分析算法可以采用多个井中的每一个的自身响应和多个井的组合之间的井间响应。 提供代表通信关系的数据。

公开(公告)号：US20120118637A1

公开(公告)日：2012-05-17

申请号：US13386612

申请日：2010-06-28

Applicant: Jingbo Wang ,  Krishnan Kumaran ,  Peng Xu ,  Steven F, Sovers ,  Lei Wang ,  Jeffrey R. Bailey ,  Erika A.O. Biediger ,  Vishwas Gupta ,  Swarupa S. Bangaru ,  Narasimha-Rao V. Bangaru

Inventor： Jingbo Wang ,  Krishnan Kumaran ,  Peng Xu ,  Steven F, Sovers ,  Lei Wang ,  Jeffrey R. Bailey ,  Erika A.O. Biediger ,  Vishwas Gupta ,  Swarupa S. Bangaru ,  Narasimha-Rao V. Bangaru

IPC: E21B44/00 ,  G05B13/04 ,  E21B7/00

CPC classification number: E21B44/00

Abstract: Methods and systems for controlling drilling operations include using a statistical model to identify at least one controllable drilling parameter having significant correlation to an objective function incorporating two or more drilling performance measurements. The methods and systems further generate operational recommendations for at least one controllable drilling parameter based at least in part on the statistical model. The operational recommendations are selected to optimize the objective function.

Abstract translation: 用于控制钻井操作的方法和系统包括使用统计模型来识别与包括两个或多个钻井性能测量的目标函数具有显着相关性的至少一个可控钻孔参数。 所述方法和系统至少部分地基于统计模型进一步产生至少一个可控钻井参数的操作建议。 选择操作建议以优化目标函数。

公开(公告)号：US20110048731A1

公开(公告)日：2011-03-03

申请号：US12920013

申请日：2009-04-24

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

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

IPC: E21B43/00 ,  G01V1/00

CPC classification number: G01V1/302 ,  G01V1/345 ,  G01V2210/48 ,  G01V2210/63 ,  G01V2210/641 ,  G01V2210/643 ,  G01V2210/66

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 one or more direct hydrocarbon indications (“DHI”), e.g. AVO classification. 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”）。 可以基于所选择的措施（213）自动分析和评估如此提取的表面或地球物质，（214），例如一个或多个直接碳氢化合物指示（“DHI”），例如。 AVO分类。 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）。

公开(公告)号：US20100121851A1

公开(公告)日：2010-05-13

申请号：US12586827

申请日：2009-09-29

Applicant: Krishnan Kumaran

Inventor： Krishnan Kumaran

IPC: G06F17/30

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连接的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。

公开(公告)号：US07136352B2

公开(公告)日：2006-11-14

申请号：US09999302

申请日：2001-10-31

Applicant: Krishnan Kumaran ,  Michel Mandjes

Inventor： Krishnan Kumaran ,  Michel Mandjes

IPC: H04L12/56

CPC classification number: H04L47/822 ,  H04L47/10 ,  H04L47/15 ,  H04L47/17 ,  H04L47/22 ,  H04L47/24 ,  H04L47/30 ,  H04L47/70 ,  H04L47/805

Abstract: Techniques are disclosed for controlling the transmission of packets over a communication link in a network. The invention in accordance with one aspect thereof determines a number of packet transmission connections supportable for a given buffer size in a node of the network while maintaining one or more specified quality of service requirements for packet transmission. This determination in the case of homogeneous input sources utilizes a combined approximation of a maximum number of supportable connections for a range of buffer sizes, the combined approximation being generated as a combination of a first approximation for small buffer sizes and a second approximation for large buffer sizes. The invention can also be used to determine an optimal operating point on a buffer-capacity tradeoff curve for each of a number of different types of heterogenous input sources. Data packets from multiple input sources may be admitted to the node of the network, or otherwise processed within the node, based at least in part on the determined number of supportable connections.

公开(公告)号：US20050084264A1

公开(公告)日：2005-04-21

申请号：US10403579

申请日：2003-03-31

Applicant: Krishnan Kumaran ,  Timothy Murphy ,  Nachi Nithi ,  Carl Nuzman ,  Gaylord Richards

Inventor： Krishnan Kumaran ,  Timothy Murphy ,  Nachi Nithi ,  Carl Nuzman ,  Gaylord Richards

IPC: H04Q11/00 ,  H04J14/00

CPC classification number: H04Q11/0005 ,  H04Q2011/0052

Abstract: Techniques and systems for design of optical switch arrays so as to minimize power requirements are described. A design system includes a computer system hosting a design program. The design program receives parameters for the switch array, including a number N of outputs required, and either a maximum number L of stages allowed or maximum and average power requirements allowed. If power requirements are used as parameters, the design program uses N and the power requirements to compute the value of L. The design program then constructs a minimum power sequence of L switches or N switches, whichever is less. If N is less than L+1, N outputs are present and the array is complete. If N is greater than L+1, the design program then adds switches one at a time to the minimum power switch path of the array, until the array provides N outputs.

Abstract translation: 描述了用于设计光开关阵列以便最小化功率需求的技术和系统。 设计系统包括托管设计程序的计算机系统。 设计程序接收交换机阵列的参数，包括需要的输出N个输出，允许的最大数量的L级或允许的最大级数和允许的平均功率要求。 如果使用功率要求作为参数，则设计程序使用N和功率要求来计算L的值。然后，设计程序构建L个开关或N个开关的最小功率序列，以较小者为准。 如果N小于L + 1，则存在N个输出，并且阵列完成。 如果N大于L + 1，则设计程序然后将开关一次一个地添加到阵列的最小功率开关路径，直到阵列提供N个输出。

公开(公告)号：US06775233B1

公开(公告)日：2004-08-10

申请号：US09598541

申请日：2000-06-21

Applicant: Krishnan Kumaran ,  Philip Alfred Whiting

Inventor： Krishnan Kumaran ,  Philip Alfred Whiting

IPC: H04J1300

CPC classification number: H04L47/10 ,  H04B2201/70703

Abstract: The scheduling of data transmissions in a CDMA system or other type of wireless communication system is implemented using a rate processor sharing approach in which user Quality of Service (QoS) requirements for forward link data transmission are converted into a rate and a corresponding violation probability, and an available system resource such as power is then divided among the users in accordance with the rates. For example, the approach may determine for each user i a rate Ri to be provided for user i with a probability 1−e−&dgr;i, where the &dgr;i are determined independently for each of the users. The system resource may be divided among the users in a manner which satisfies a linear relationship involving the rates and corresponding cost factors of the users. The portion of the system resource allocated to a given user may be fixed for a designated scheduling interval. The approach may also utilize statistical multiplexing to achieve performance gains for multiple bursty users, and may include an admission control function.

Abstract translation: 在CDMA系统或其他类型的无线通信系统中的数据传输的调度使用速率处理器共享方法来实现，其中用于向前链路数据传输的用户服务质量（QoS）要求被转换成速率和相应的违规概率， 然后根据速率在用户之间划分诸如功率的可用系统资源。 例如，该方法可以为每个用户确定要为用户i以概率1-e 提供的速率Ri，其中对于每个用户独立地确定deltai。 系统资源可以以满足涉及用户的费率和相应成本因素的线性关系的方式在用户之间分配。 分配给给定用户的系统资源的部分可以在指定的调度间隔内被固定。 该方法还可以利用统计复用来实现多个突发用户的性能增益，并且可以包括准入控制功能。