Patents by Inventor Keshava Prasad Rangarajan

Keshava Prasad Rangarajan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11352874
    Abstract: Certain aspects and features relate to a system that efficiently determines optimal actuator set points to satisfy an objective in controlling equipment such as systems for drilling, production, completion or other operations associated with oil or gas production from a wellbore. A platform can receive data and also make use of and communicate with multiple algorithms asynchronously and efficiently to project automatic optimum set points for controllable parameters. Services can provide data over a real-time messaging bus and the data can be captured by an orchestrator that aggregates all data and calls a solver orchestrator to determine optimized parameters for a current state in time to send to control systems or display in a dashboard.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: June 7, 2022
    Assignee: Landmark Graphics Corporation
    Inventors: Matthew Edwin Wise, Egidio Marotta, Keshava Prasad Rangarajan
  • Patent number: 11319793
    Abstract: System and methods for optimizing parameters for drilling operations are provided. Real-time data including values for input variables associated with a current stage of a drilling operation along a planned well path are acquired. A neural network model is trained to produce an objective function defining a response value for at least one operating variable of the drilling operation. The response value for the operating variable is estimated based on the objective function produced by the trained neural network model. Stochastic optimization is applied to the estimated response value so as to produce an optimized response value for the operating variable. Values of controllable parameters are estimated for a subsequent stage of the drilling operation, based on the optimized response value of the operating variable. The subsequent stage of the drilling operation is performed based on the estimated values of the controllable parameters.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: May 3, 2022
    Assignee: Landmark Graphics Corporation
    Inventors: Srinath Madasu, Keshava Prasad Rangarajan, Nishant Raizada
  • Publication number: 20220112799
    Abstract: System for optimizing operation of an oil and gas well employs multi-objective Bayesian optimization of wellbore parameters to minimize scaling and corrosion. The system may contain instrumentation for measuring temperature, pressure, at least one production parameter and at least one ion concentration of the fluid in the wellbore. The system may also have a processor for performing a calculation procedure to determine an anticipated corrosion rate (“Vbase”) and a scaling index (“Is”) reflecting a tendency of scale to form in the wellbore based on the measurements provided by the instrumentation, where Vbase and Is are calculated along the length of the wellbore. Based on a selected set of optimization points taken from the calculations of Vbase and Is, the system may control the alkalinity and flow rate of the fluid based on the multi-objective optimization to simultaneously optimize scaling and corrosion.
    Type: Application
    Filed: April 13, 2020
    Publication date: April 14, 2022
    Inventors: Da PANG, Srinath MADASU, Xinli JIA, Keshava Prasad RANGARAJAN
  • Patent number: 11269100
    Abstract: A method includes receiving a training selection of a first set of faults located in a first subset of a seismic dataset for a subsurface geologic formation, detecting a second set of faults in the seismic dataset based on fault interpretation operations using a first set of interpretation parameters, and determining a difference between the first set of faults and the second set of faults. The method also includes generating a second set of interpretation parameters for the fault interpretation operations based on the difference between the first set of faults and the second set of faults, and determining a feature of the subsurface geologic formation based on fault interpretation operations using the second set of interpretation parameters.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: March 8, 2022
    Assignee: Landmark Graphics Corporation
    Inventors: Youli Mao, Raja Vikram Pandya, Bhaskar Mandapaka, Keshava Prasad Rangarajan, Srinath Madasu, Satyam Priyadarshy, Ashwani Dev
  • Publication number: 20220034220
    Abstract: A system for determining real time cluster efficiency for a pumping operation in a wellbore includes a pump, a surface sensor, a downhole sensor system, and a computing device. The pump can pump slurry or diverter material in the wellbore. The surface sensor can be positioned at a surface of the wellbore to detect surface data about the pump. The downhole sensor system can be positioned in the wellbore to detect downhole data about an environment of the wellbore. The computing device can receive the surface data from the surface sensor, receive the downhole data from the downhole sensor system, apply the surface data and the downhole data to a long short-term memory (LSTM) neural network to produce a predicted cluster efficiency associated with operational settings of the pump, and control the pump using the operational settings to achieve the predicted cluster efficiency.
    Type: Application
    Filed: November 30, 2018
    Publication date: February 3, 2022
    Inventors: Srinath Madasu, Ashwani Dev, Keshava Prasad Rangarajan, Satyam Priyadarshy
  • Publication number: 20210404313
    Abstract: A drilling device may use a concurrent path planning process to create a path from a starting location to a destination location within a subterranean environment. The drilling device can receive sensor data. A probability distribution can be generated from the sensor data indicating one or more likely materials compositions that make up each portion of the subterranean environment. The probability distribution can be sampled, and for each sample, a drill path trajectory and drill parameters for the trajectory can be generated. A trained neural network may evaluate each trajectory and drill parameters to identify the most ideal trajectory based on the sensor data. The drilling device may then initiate drilling operations for a predetermined distance along the ideal trajectory.
    Type: Application
    Filed: July 12, 2019
    Publication date: December 30, 2021
    Inventors: Yashas Malur Saidutta, Srinath Madasu, Shashi Dande, Keshava Prasad Rangarajan, Raja Vikram R. Pandya, Jeffrey M. Yarus, Robello Samuel
  • Publication number: 20210404302
    Abstract: A system and method for controlling a gas supply to provide gas lift for a production wellbore makes use of Bayesian optimization. A computing device controls a gas supply to inject gas into one or more wellbores. The computing device receives reservoir data associated with a subterranean reservoir to be penetrated by the wellbores and can simulate production using the reservoir data and using a physics-based or machine learning or hybrid physics-based machine learning model for the subterranean reservoir. The production simulation can provide production data. A Bayesian optimization of an objective function of the production data subject to any gas injection constraints can be performed to produce gas lift parameters. The gas lift parameters can be applied to the gas supply to control the injection of gas into the wellbore or wellbores.
    Type: Application
    Filed: August 9, 2018
    Publication date: December 30, 2021
    Inventors: Srinath MADASU, Terry WONG, Keshava Prasad RANGARAJAN, Steven WARD, ZhiXiang JIANG
  • Publication number: 20210388700
    Abstract: Aspects and features of a system for providing parameters for shale field configuration include a processor, and instructions that are executable by the processor. The system, using the processor, can receive resource supply data associated with a shale field to be penetrated by a wellbore or wellbores and simulate production from the shale field using the resource supply data to determine constraints and decision variables. The system can optimize a multi-objective function of the decision variables subject to the constraints to produce controllable parameters for operating the shale field. As examples, these parameters may be related to formation or stimulation of the wellbore or wellbores at the shale field site.
    Type: Application
    Filed: June 12, 2020
    Publication date: December 16, 2021
    Inventors: Srinath Madasu, Keshava Prasad Rangarajan
  • Publication number: 20210372259
    Abstract: Aspects and features of a system for real-time drilling using automated data quality control can include a computing device, a drilling tool, sensors, and a message bus. The message bus can receive current data from a wellbore. The computing device can generate and use a feature-extraction model to provide revised data values that include those for missing data, statistical outliers, or both. The model can be used to produce controllable drilling parameters using highly accurate data to provide optimal control of the drilling tool. The real-time message bus can be used to apply the controllable drilling parameters to the drilling tool.
    Type: Application
    Filed: May 26, 2020
    Publication date: December 2, 2021
    Inventors: Shashi Dande, Srinath Madasu, Keshava Prasad Rangarajan
  • Publication number: 20210355805
    Abstract: A system for controlling operations of a drill in a well environment. The system comprises a predictive engine, a ML engine, a controller, and a secure, distributed storage network. The predictive engine receives a variables associated with surface and sub-surface sensors and predicts an earth model based on the variables, predictor variable(s), outcome variable(s), and relationships between the predictor variable(s) and the outcome variable(s). The predictive engine is also configured to predict a drill path(s) ahead of the drill based on using stochastic modeling, an outcome variable(s), the predicted earth model, and a drilling model(s). The controller is configured to generate a system response(s) based on the predicted drill path(s) and a current state of the drill. The ML engine stores the earth model, the drill path(s), and the variables in the distributed storage network, trains data, and creates the drilling model(s).
    Type: Application
    Filed: December 5, 2019
    Publication date: November 18, 2021
    Inventors: Keshava Prasad Rangarajan, Raja Vikram R. Pandya, Srinath Madasu, Shashi Dande
  • Patent number: 11176081
    Abstract: Various embodiments include systems and methods of operating the systems that include operation of a plurality of first nodes and second nodes in response to a request, where each first node is a first type of processing unit and each second node is a second type of processing unit, where the second type of processing node is different from the first type of processing node. Each of the first and second nodes can be operable in parallel with the other nodes of their respective plurality. Each second node may be operable to respond to the request using data and/or metadata it holds and/or operable in response to data and/or metadata from one or more of the first nodes. Additional apparatus, systems, and methods are disclosed.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: November 16, 2021
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Joseph Blake Winston, Scott David Senften, Keshava Prasad Rangarajan
  • Publication number: 20210332696
    Abstract: Certain aspects and features relate to a system that efficiently determines optimal actuator set points to satisfy an objective in controlling equipment such as systems for drilling, production, completion or other operations associated with oil or gas production from a wellbore. A platform can receive data and also make use of and communicate with multiple algorithms asynchronously and efficiently to project automatic optimum set points for controllable parameters. Services can provide data over a real-time messaging bus and the data can be captured by an orchestrator that aggregates all data and calls a solver orchestrator to determine optimized parameters for a current state in time to send to control systems or display in a dashboard.
    Type: Application
    Filed: December 7, 2018
    Publication date: October 28, 2021
    Inventors: Matthew Edwin WISE, Egidio MAROTTA, Keshava Prasad RANGARAJAN
  • Patent number: 11151454
    Abstract: A system for multi-stage placement of material in a wellbore includes a recurrent neural network that can be configured based on data from a multi-stage, stimulated wellbore. A computing device in communication with a sensor and a pump is operable to implement the recurrent neural network, which may include a long short-term neural network model (LSTM). Surface data from the sensor at each observation time of a plurality of observation times is used by the recurrent neural network to produce a predicted value for a response variable at a future time, and the predicted value for the response variable is used to control a pump being used to place the material.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: October 19, 2021
    Assignee: Landmark Graphics Corporation
    Inventors: Srinath Madasu, Keshava Prasad Rangarajan
  • Publication number: 20210270998
    Abstract: A history-matched oilfield model that facilitates well system operations for an oilfield is generated using a Bayesian optimization of adjustable parameters based on an entire production history. The Bayesian optimization process includes stochastic modifications to the adjustable parameters based on a prior probability distribution for each parameter and a model error generated using historical production measurement values and corresponding model prediction values for various sets of test parameters.
    Type: Application
    Filed: August 30, 2018
    Publication date: September 2, 2021
    Inventors: Srinath Madasu, Keshava Prasad Rangarajan, Terry Wong
  • Publication number: 20210230977
    Abstract: The disclosed embodiments include reservoir simulation systems and methods to dynamically improve performance of reservoir simulations. The method includes obtaining input variables for generating a reservoir simulation of a reservoir, and generating the reservoir simulation based on the input variables. The method also includes determining a variance of computation time for processing the reservoir simulation. In response to a determination that the variance of computation time is less than or equal to a threshold, the method includes performing a first sequence of Bayesian Optimizations of at least one of internal and external parameters that control the reservoir simulation to improve performance of the reservoir simulation. In response to a determination that the variance of computation time is greater than the threshold, the method includes performing a second sequence of Bayesian Optimizations of at least one of the internal and external parameters.
    Type: Application
    Filed: March 5, 2019
    Publication date: July 29, 2021
    Inventors: Raja Vikram R. Pandya, Satyam Priyadarshy, Keshava Prasad Rangarajan
  • Publication number: 20210222688
    Abstract: The disclosed embodiments include pump systems and methods to improve pump load predictions of pumps. The method includes determining, in a neural network, a pump load of a wellbore pump based on a physics based model of the pump load of the wellbore pump. The method also includes obtaining a measured pump load of the wellbore pump. After initiation of a pump cycle of the wellbore pump, the method further includes predicting a pump load of the wellbore pump based on the physics based model, performing a Bayesian Optimization to reduce a difference between a predicted pump load and the measured pump load to less than a threshold value, and improving a prediction of the pump load based on the Bayesian Optimization.
    Type: Application
    Filed: January 31, 2019
    Publication date: July 22, 2021
    Inventors: Srinath Madasu, Keshava Prasad Rangarajan
  • Publication number: 20210209055
    Abstract: Various embodiments include systems and methods of operating the systems that include operation of a plurality of first nodes and second nodes in response to a request, where each first node is a first type of processing unit and each second node is a second type of processing unit, where the second type of processing node is different from the first type of processing node. Each of the first and second nodes can be operable in parallel with the other nodes of their respective plurality. Each second node may be operable to respond to the request using data and/or metadata it holds and/or operable in response to data and/or metadata from one or more of the first nodes. Additional apparatus, systems, and methods are disclosed.
    Type: Application
    Filed: June 23, 2016
    Publication date: July 8, 2021
    Inventors: Joseph Blake Winston, Scott David Senften, Keshava Prasad Rangarajan
  • Publication number: 20210201160
    Abstract: A physics-influenced deep neural network (PDNN) model, or a deep neural network incorporating a physics-based cost function, can be used to efficiently denoise sensor data. To generate the PDNN model, noisy sensor data is used as training data input to a deep neural network and training output is valuated with a cost function that incorporates a physics-based model. An autoencoder can be coupled to the PDNN model and trained with the reduced-noise sensor data which is output from the PDNN during training of the PDNN or with a separate set of sensor data. The autoencoder detects outliers based on the reconstructed reduced-noise sensor data which it generates. Denoising sensor data by leveraging an autoencoder which is influenced by the physics of the underlying domain based on the incorporation of the physics-based model in the PDNN facilitates accurate and efficient denoising of sensor data and detection of outliers.
    Type: Application
    Filed: December 16, 2019
    Publication date: July 1, 2021
    Inventors: Srinath Madasu, Keshava Prasad Rangarajan
  • Publication number: 20210148213
    Abstract: System and methods for optimizing parameters for drilling operations are provided. Real-time data including values for input variables associated with a current stage of a drilling operation along a planned well path are acquired. A neural network model is trained to produce an objective function defining a response value for at least one operating variable of the drilling operation. The response value for the operating variable is estimated based on the objective function produced by the trained neural network model. Stochastic optimization is applied to the estimated response value so as to produce an optimized response value for the operating variable. Values of controllable parameters are estimated for a subsequent stage of the drilling operation, based on the optimized response value of the operating variable. The subsequent stage of the drilling operation is performed based on the estimated values of the controllable parameters.
    Type: Application
    Filed: November 15, 2017
    Publication date: May 20, 2021
    Inventors: Srinath Madasu, Keshava Prasad Rangarajan, Nishant Raizada
  • Publication number: 20210123334
    Abstract: System and methods for simulating fluid flow during downhole operations are provided. Measurements of an operating variable at one or more locations within a formation are obtained from a downhole tool disposed in a wellbore within the formation during a current stage of a downhole operation being performed along the wellbore. The obtained measurements are applied as inputs to a hybrid model of the formation. The hybrid model includes physics-based and machine learning models that are coupled together within a simulation grid. Fluid flow within the formation is simulated, based on the inputs applied to the hybrid model. A response of the operating variable is estimated for a subsequent stage of the downhole operation along the wellbore, based on the simulation. Flow control parameters for the subsequent stage are determined based on the estimated response. The subsequent stage of the operation is performed according to the determined flow control parameters.
    Type: Application
    Filed: April 30, 2019
    Publication date: April 29, 2021
    Inventors: Srinath Madasu, Keshava Prasad Rangarajan