公开(公告)号：US20190048704A1

公开(公告)日：2019-02-14

申请号：US16022174

申请日：2018-06-28

Applicant: Krishnan Kumaran

Inventor： Krishnan Kumaran

IPC: E21B44/02 ,  E21B3/02 ,  E21B47/12

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.

公开(公告)号：US09333497B2

公开(公告)日：2016-05-10

申请号：US14192995

申请日：2014-02-28

Applicant: Teh C. Ho ,  Krishnan Kumaran ,  Richard C. Dougherty

Inventor： Teh C. Ho ,  Krishnan Kumaran ,  Richard C. Dougherty

IPC: B01J38/56 ,  G05B23/02 ,  B01J8/02 ,  C10G49/00 ,  C10G75/00 ,  C10G75/04

CPC classification number: B01J38/56 ,  B01J8/02 ,  B01J2208/0007 ,  B01J2208/00539 ,  B01J2208/00707 ,  B01J2219/00211 ,  B01J2219/00213 ,  B01J2219/00231 ,  C10G49/002 ,  C10G75/00 ,  C10G75/04 ,  G05B23/0254

Abstract: The behavior of a monitored condition over time for a reactor or reaction system can be analyzed using groupings or windows of data to identify anomalous features in the time-average values. Anomalous features can be identified based on a threshold value generated from the analysis. Based on identification of an anomalous feature, a corrective action can be taken. For example, when the monitored condition is the pressure drop across a catalyst bed, detection of an anomaly can indicate the time to initiate a wash process for the catalyst bed before a large drop in catalyst activity occurs. By detecting an anomaly at an earlier point in time, a wash cycle can be initiated earlier so that the wash is more effective at restoring the catalyst bed to a desired condition.

Abstract translation: 可以使用数据分组或窗口来分析反应堆或反应系统的监测条件随时间的行为，以识别时间平均值中的异常特征。 可以基于从分析生成的阈值来识别异常特征。 基于异常特征的识别，可采取纠正措施。 例如，当监测条件是催化剂床上的压降时，异常的检测可以指示在催化剂活性发生大的下降之前催化剂床的启动洗涤过程的时间。 通过在较早的时间点检测异常，可以更早地启动洗涤循环，使得洗涤在将催化剂床恢复到所需条件下更有效。

公开(公告)号：US20150060056A1

公开(公告)日：2015-03-05

申请号：US14446132

申请日：2014-07-29

Applicant: Krishnan Kumaran ,  Randy C. Tolman ,  Renzo M. Angeles Boza ,  Timothy I. Morrow ,  Eric R. Grueschow

Inventor： Krishnan Kumaran ,  Randy C. Tolman ,  Renzo M. Angeles Boza ,  Timothy I. Morrow ,  Eric R. Grueschow

IPC: E21B44/00

CPC classification number: E21B44/005

Abstract: Systems and methods for restricting fluid flow in a casing conduit, including a wellbore that extends within a subterranean formation, a casing string that extends within the wellbore and defines a portion of the casing conduit, a plurality of motion-arresting structures that project from an inner surface of the casing string to define a plurality of reduced-area regions of the casing conduit, and an autonomous sealing device that defines a contracted configuration and an expanded configuration. The methods include conveying the autonomous sealing device through the casing conduit, determining that the autonomous sealing device is located within a target portion of the casing conduit, expanding the autonomous sealing device to the expanded configuration, retaining the autonomous sealing device on a selected motion-arresting structure, and restricting fluid flow within the casing conduit with the autonomous sealing device.

Abstract translation: 用于限制套管导管中的流体流动的系统和方法，包括在地层内延伸的井筒，在井筒内延伸并限定套管导管的一部分的套管柱，多个运动拦截结构， 套管柱的内表面以限定套管导管的多个缩小区域区域，以及限定收缩构造和扩展构造的自主密封装置。 所述方法包括通过套管导管输送自动密封装置，确定自动密封装置位于套管导管的目标部分内，将自动密封装置膨胀至膨胀构型，将自动密封装置保持在选定的运动 - 使用自动密封装置阻止套管内的流体流动。

公开(公告)号：US20130064040A1

公开(公告)日：2013-03-14

申请号：US13695226

申请日：2011-04-22

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

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

IPC: G01V1/30

CPC classification number: G01V1/30 ,  G01V1/302 ,  G01V1/306 ,  G01V1/307 ,  G01V1/345 ,  G01V2210/63 ,  G01V2210/64 ,  G01V2210/74

Abstract: Method for analyzing seismic data representing a subsurface region for presence of a hydrocarbon system or a particular play. Seismic attributes are computed, the attributes being selected to relate to the classical elements of a hydrocarbon system, namely reservoir, seal, trap, source, maturation, and migration. Preferably, the attributes are computed along structural fabrics (1) of the subsurface region, and are smoothed over at least tens or hundreds of data voxels. The resulting geologic attributes (2) are used to analyze the data for elements of the hydrocarbon system and/or recognition of specific plays, and for ranking and annotating partitioned regions (3) of the data volume based on size, quality, and confidence in the prospectivity prediction (5). A catalogue (8) of hydrocarbon trap configurations may be created and used to identify potential presence of hydrocarbon traps and/or aid in scoring (4) and ranking partitioned regions as hydrocarbon prospects.

Abstract translation: 用于分析表示烃系统或特定游戏的存在的地下区域的地震数据的方法。 计算地震属性，选择属性与烃系统的古典元素相关，即储层，密封，陷阱，源，成熟和迁移。 优选地，沿着地下区域的结构织物（1）计算属性，并且在至少数十或数百个数据体素上平滑。 所得到的地质属性（2）用于分析烃系统的元素和/或特定游戏的识别数据，以及基于大小，质量和置信度对数据量的分割区域（3）进行排名和注释 前景预测（5）。 可以创建碳捕集器构造目录（8）并用于识别碳氢化合物阱的潜在存在和/或帮助评分（4）并将分区区域作为碳氢化合物前景。

公开(公告)号：US08363510B2

公开(公告)日：2013-01-29

申请号：US12741133

申请日：2008-10-31

Applicant: Krishnan Kumaran ,  Jingbo Wang

Inventor： Krishnan Kumaran ,  Jingbo Wang

IPC: G01V1/00

CPC classification number: G01V1/288

Abstract: A computer implemented method for the detection of features such as faults or channels in seismic images. First, edges are detected in a smoothed seismic image (106). To detect a fault line, an image intensity of the edges is projected in multiple spatial directions, for example by performing a Radon transform (118). The directions of maximum intensity are used to define a fault line (124c). To detect channels, smooth curves are identified within the detected edges (810). Sets of parallel smooth curves (812a) are then identified and used to define channels (812).

Abstract translation: 一种用于检测地震图像中的故障或通道等特征的计算机实现方法。 首先，在平滑的地震图像中检测边缘（106）。 为了检测故障线，例如通过执行Radon变换（118），沿多个空间方向投影边缘的图像强度。 最大强度的方向用于定义断层线（124c）。 为了检测通道，在检测到的边缘内识别平滑曲线（810）。 然后识别并行平滑曲线组（812a）并用于定义通道（812）。

公开(公告)号：US08051828B2

公开(公告)日：2011-11-08

申请号：US12316030

申请日：2008-12-09

Applicant: Bhaskar Sengupta ,  Krishnan Kumaran ,  Walter Weissman ,  Randall D. Partridge ,  Kouseki Sugiyama ,  Keiji Yoeda ,  Tomihisa Oda ,  Yoshihiro Iwashita

Inventor： Bhaskar Sengupta ,  Krishnan Kumaran ,  Walter Weissman ,  Randall D. Partridge ,  Kouseki Sugiyama ,  Keiji Yoeda ,  Tomihisa Oda ,  Yoshihiro Iwashita

IPC: F02M43/04 ,  F02M43/00

CPC classification number: F02D41/0025 ,  F02M37/0064 ,  F02M37/0088 ,  Y02T10/36 ,  Y10T137/2509 ,  Y10T137/27

Abstract: A fuel management system mounted on a vehicle is operative to feed individually or a mixture of grades of relatively low, intermediate, and high autoignition temperature fuels to an associated internal combustion engine. The system includes an on board separation unit (OBS unit) for receiving and separating intermediate autoignition temperature (IAT) fuel into low and high autoignition temperature fuels, LAT and HAT, respectively. The production rate of the LAT and HAT fuels by the OBS unit is controlled to substantially match the consumption requirements of the engine at any given time for the LAT and HAT fuels.

Abstract translation: 安装在车辆上的燃料管理系统可操作以将相对低的，中等的和高的自燃温度燃料的等级的单独的或混合物供给到相关联的内燃机。 该系统包括用于分别将中间自燃温度（IAT）燃料接收和分离成低和高自燃温度燃料LAT和HAT的船上分离单元（OBS单元）。 控制OBS装置的LAT和HAT燃料的生产率在任何给定的时间基本匹配了发动机对LAT和HAT燃料的消耗要求。

公开(公告)号：US20090242038A1

公开(公告)日：2009-10-01

申请号：US12316030

申请日：2008-12-09

Applicant: Bhaskar Sengupta ,  Krishnan Kumaran ,  Walter Weissman ,  Randall D. Partridge

Inventor： Bhaskar Sengupta ,  Krishnan Kumaran ,  Walter Weissman ,  Randall D. Partridge

IPC: G05D11/00

CPC classification number: F02D41/0025 ,  F02M37/0064 ,  F02M37/0088 ,  Y02T10/36 ,  Y10T137/2509 ,  Y10T137/27

Abstract: A fuel management system mounted on a vehicle is operative to feed individually or a mixture of grades of relatively low, intermediate, and high autoignition temperature fuels to an associated internal combustion engine. The system includes an on board separation unit (OBS unit) for receiving and separating intermediate autoignition temperature (IAT) fuel into low and high autoignition temperature fuels, LAT and HAT, respectively. The production rate of the LAT and HAT fuels by the OBS unit is controlled to substantially match the consumption requirements of the engine at any given time for the LAT and HAT fuels.

Abstract translation: 安装在车辆上的燃料管理系统可操作以将相对低的，中等的和高的自燃温度燃料的等级的单独的或混合物供给到相关联的内燃机。 该系统包括用于分别将中间自燃温度（IAT）燃料接收和分离成低和高自燃温度燃料LAT和HAT的船上分离单元（OBS单元）。 控制OBS装置的LAT和HAT燃料的生产率在任何给定的时间基本匹配了发动机对LAT和HAT燃料的消耗要求。

公开(公告)号：US06768744B1

公开(公告)日：2004-07-27

申请号：US09531244

申请日：2000-03-21

Applicant: Krishnan Kumaran ,  Geoffrey Edmund Margrave ,  Debasis Mitra ,  Keith R. Stanley

Inventor： Krishnan Kumaran ,  Geoffrey Edmund Margrave ,  Debasis Mitra ,  Keith R. Stanley

IPC: H04L1228

CPC classification number: H04Q11/0478 ,  H04L45/302 ,  H04L45/42 ,  H04L2012/5651 ,  H04L2012/5679

Abstract: Generalized Processor Sharing (GPS) is a scheduling discipline which provides minimum service guarantees as well as fair resource sharing. The performance of GPS is governed by the scheduling weights associated with individual connections. The system discloses methods for GPS scheduling that handle an arbitrary number of connection classes and reservation-based weights and admission control techniques to achieve fairness among connection classes. The methods allow statistical multiplexing gains in the presence of multiple traffic and Quality of Service (QoS) classes of connections that share a common trunk. Also disclosed are several novel techniques to compute and adapt the weights.

Abstract translation: 通用处理器共享（GPS）是一种调度规则，提供最低限度的服务保证以及公平的资源共享。 GPS的性能由与各个连接相关联的调度权重决定。 该系统公开了处理任意数量的连接类别和基于预约的权重和准入控制技术的GPS调度方法，以实现连接类别之间的公平性。 这些方法允许在存在共享公共中继线的多个业务和服务质量（QoS）类别的存在下的统计复用增益。 还公开了几种用于计算和调整权重的新技术。

公开(公告)号：US6134442A

公开(公告)日：2000-10-17

申请号：US35006

申请日：1998-03-05

Applicant: Simon C. Borst ,  Terry Si-Fong Cheng ,  Sudheer A. Grandhi ,  Joe Huang ,  Colin L. Kahn ,  Krishnan Kumaran ,  Bulin B. Zhang

Inventor： Simon C. Borst ,  Terry Si-Fong Cheng ,  Sudheer A. Grandhi ,  Joe Huang ,  Colin L. Kahn ,  Krishnan Kumaran ,  Bulin B. Zhang

IPC: H04M15/00 ,  H04M3/00 ,  H04W16/10 ,  H04J1/16 ,  H04Q7/00

CPC classification number: H04W16/10

Abstract: Operations in a cellular system are controlled based on cost values that are generated using neighbor association. In neighbor association, each cost value corresponds to a cost of assigning a candidate channel to a first cell in the cellular system, assuming that the candidate channel is already assigned to a second cell in the cellular system and each cost value is based on an average power attenuation for all of the cells in the cellular system that share the same tier as the second cell with respect to the first cell, wherein the average power attenuation is based on the reuse distances between the first cell and the cells in the same tier. In one embodiment, the cost values are used in a cost-function-based dynamic channel assignment (DCA) algorithm that is, but does not have to be, applied to a list of candidate channels generated using a measurement-based DCA algorithm.

Abstract translation: 基于使用邻居关联生成的成本值来控制蜂窝系统中的操作。 在邻居关联中，每个成本值对应于将候选信道分配给蜂窝系统中的第一小区的成本，假设候选信道已经被分配给蜂窝系统中的第二小区，并且每个成本值基于平均值 所述蜂窝系统中与第一小区共享与第二小区相同的层的所有小区的功率衰减，其中平均功率衰减基于第一小区与同一层中的小区之间的重用距离。 在一个实施例中，成本值被用在基于成本函数的动态信道分配（DCA）算法中，该算法是但不是必须被应用于使用基于测量的DCA算法生成的候选信道的列表。

公开(公告)号：US09261615B2

公开(公告)日：2016-02-16

申请号：US13860313

申请日：2013-04-10

Applicant: Krishnan Kumaran

Inventor： Krishnan Kumaran

IPC: G01V1/30 ,  G01V1/00

CPC classification number: G01V1/30 ,  G01V1/00 ,  G01V1/301

Abstract: Method for identifying geologic features from seismic data (11) using seismic anomaly detection by a double-windowed statistical analysis. Subtle features that may be obscured using a single window on the data are made identifiable using two moving windows of user-selected size and shape: a pattern window located within a sampling window larger than the pattern window (12). If Gaussian statistics are assumed, the statistical analysis may be performed by computing mean and covariance matrices for the data within the pattern window in its various positions within the sampling window (13). Then a specific measure of degree of anomaly for each voxel such as a residue value may be computed for each sampling window using its own mean and covariance matrix (14), and finally the resulting residue volume may be analyzed, with or without thresholding, for physical features indicative of hydrocarbon potential (15).

Abstract translation: 使用双窗口统计分析的地震异常检测方法从地震数据（11）中识别地质特征。 使用用户选择的尺寸和形状的两个移动窗口可以识别可以使用数据上的单个窗口遮蔽的细微特征：位于大于图案窗口（12）的采样窗口内的图案窗口。 如果假设高斯统计量，则可以通过在采样窗口（13）内的各个位置中计算模式窗口内的数据的平均值和协方差矩阵来执行统计分析。 然后，可以使用其自身的平均和协方差矩阵（14）为每个采样窗口计算每个体素的异常程度（例如残差值）的特定度量，最后可以分析具有或不具有阈值的所得残留体积 表明碳氢化合物潜力的物理特征（15）。