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).

  • Publication number: 20210062634
    Abstract: A system and method for controlling a drilling tool inside a wellbore makes use of Bayesian optimization with range constraints. A computing device samples observed values for controllable drilling parameters such as weight-on-bit (WOB) and drill bit rotational speed in RPM and evaluates a selected drilling parameter such a rate-of-penetration (ROP) for the observed values using an objective function. Range constraints can be continuously learned by the computing device as the range constraints change. A Bayesian optimization, subject to the range constraints and the observed values, can produce an optimized value for the controllable drilling parameter to achieve a predicted value for the selected drilling parameter. The system can then control the drilling tool using the optimized value to achieve the predicted value for the selected drilling parameter.
    Type: Application
    Filed: May 7, 2018
    Publication date: March 4, 2021
    Inventors: Srinath Madasu, Keshava Prasad Rangarajan
  • Publication number: 20210058235
    Abstract: A system for managing well site operations comprising a well site operations module, a chain of blocks of a distributed network, and a sensor bank and control module. The operations module generates earth model variables using a physics model, well log variables or seismic variables, or both, and a trained AI/ML algorithmic model. The chain of blocks comprises a plurality of subsequent blocks. Each subsequent block comprises a well site entry and a hash value of a previous well site entry. A well site entry comprises transacted operation control variables. The well site operations module generates production operation control variables or development operation control variables from earth model variables. The well site entry can also include transacted earth model variables and sensor variables. The sensor bank and control module provides well log variables and the operations module couples control variables to the control module to control well site equipment.
    Type: Application
    Filed: August 21, 2020
    Publication date: February 25, 2021
    Inventors: Keshava Prasad Rangarajan, Raja Vikram R. Pandya, Srinath Madasu, Shashi Dande
  • Publication number: 20210055442
    Abstract: A system, for controlling well site operations, comprising a machine learning engine, a predictive engine, a node system stack, and a blockchain. The learning engine includes a machine learning algorithm, an algorithmically generated earth model, and control variables. The learning algorithm generates a trained data model using the algorithmically generated earth model. The predictive engine includes an Artificial Intelligence (AI) algorithm. The AI algorithm generates a trained AI algorithm using the trained data model and earth model variables using the trained AI algorithm. The system stack is communicable coupled to the predictive engine, the learning engine, the blockchain, sensors, and a machine controller. The blockchain having a genesis block and a plurality of subsequent blocks. Each subsequent block comprising a well site entry and a hash of a previous entry. The well site entry comprises transacted operation control variables.
    Type: Application
    Filed: August 21, 2020
    Publication date: February 25, 2021
    Inventors: Keshava Prasad Rangarajan, Raja Vikram R. Pandya, Srinath Madasu, Shashi Dande
  • Publication number: 20210056447
    Abstract: A system for managing well site operations, the system comprising executable partitions, predictive engines, node system stacks, and a blockchain. The predictive engines comprise an Artificial Intelligence (AI) algorithm to generate earth model variables using a physics model, well log data variables, and seismic data variables. The node system stacks are coupled to the blockchain, sensors, and machine controllers. Each node system stack comprises a Robot Operating System (ROS) based middleware controller, with each coupled to each partition, each node system stack, each predictive engine, and an AI process or processes. The blockchain comprises chained blocks of a distributed network. The distributed network comprises a genesis block and a plurality of subsequent blocks, each subsequent block comprising a well site entry and a hash value of a previous well site entry. The well site entry comprises operation control variables. The operation control variables are based on the earth model variables.
    Type: Application
    Filed: August 21, 2020
    Publication date: February 25, 2021
    Inventors: Keshava Prasad Rangarajan, Raja Vikram R. Pandya, Srinath Madasu, Shashi Dande
  • Publication number: 20210047910
    Abstract: A method for optimizing real time drilling with learning uses a multi-layer Deep Neural Network (DNN) built from input drilling data. A plurality of drilling parameter features is extracted using the DNN. A linear regression model is built based on the extracted plurality of drilling parameter features. The linear regression model is applied to predict one or more drilling parameters.
    Type: Application
    Filed: May 9, 2018
    Publication date: February 18, 2021
    Inventors: Srinath MADASU, Keshava Prasad RANGARAJAN
  • Publication number: 20200284944
    Abstract: A system for determining completion parameters for a wellbore includes a sensor and a computing device. The sensor can be positioned at a surface of a wellbore to detect data prior to finishing a completion stage for the wellbore. The computing device can receive the data, perform a history match for simulation and production using the sensor data and historical data, generate inferred data for completion parameters using the historical data identified during the history match, predict stimulated area and production by inputting the inferred data into a neural network model, determine completion parameters for the wellbore using Bayesian optimization on the stimulated area and production from the neural network model, profit maximization, and output the completion parameters for determining completion decisions for the wellbore.
    Type: Application
    Filed: March 4, 2019
    Publication date: September 10, 2020
    Inventors: Srinath MADASU, Hanife Meftun ERDOGAN, Keshava Prasad RANGARAJAN
  • Publication number: 20200277851
    Abstract: Aspects of the present disclosure relate to receiving data associated with a subterranean reservoir to be penetrated by a wellbore and training a neural network with both the data and a physics-based first principles model. The neural network is then used to make predictions regarding the properties of the subterranean reservoir, and these predictions are in turn used to determine one or more controllable parameters for equipment associated with a wellbore. The controllable parameters can then be used to control equipment for formation, stimulation, or production relative to the wellbore.
    Type: Application
    Filed: November 13, 2017
    Publication date: September 3, 2020
    Inventors: Srinath MADASU, Keshava Prasad RANGARAJAN
  • Publication number: 20200248540
    Abstract: A method includes performing a first wellbore treatment operation of a wellbore, determining an operational attribute of the well in response to the first wellbore treatment operation, and determining a predicted response using a recurrent neural network and based on the operational attribute. The method also includes setting a controllable wellbore treatment attribute based, on the predicted response, and performing a second wellbore treatment operation of the wellbore based on the controllable well bore treatment attribute.
    Type: Application
    Filed: December 18, 2017
    Publication date: August 6, 2020
    Inventors: Srinath Madasu, Yogendra Narayan Pandey, Keshava Prasad Rangarajan
  • Publication number: 20200240257
    Abstract: A system and method for controlling a drilling tool inside a wellbore makes use of simulated annealing and Bayesian optimization to determine optimum controllable drilling parameters. In some aspects, a computing device generates sampled exploration points using simulated annealing and runs a Bayesian optimization using a loss function and the exploration points to optimize at least one controllable drilling parameter to achieve a predicted value for a selected drilling parameter. In some examples, the selected drilling parameter is rate-of-penetration (ROP) and in some examples, the controllable drilling parameters include such parameters as rotational speed (RPM) and weight-on-bit (WOB). In some examples, the computing device applies the controllable drilling parameter(s) to the drilling tool to achieve the predicted value for the selected drilling parameter and provide real-time, closed-loop control and automation in drilling.
    Type: Application
    Filed: October 15, 2018
    Publication date: July 30, 2020
    Inventors: Srinath MADASU, Keshava Prasad RANGARAJAN
  • Publication number: 20200210841
    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: Application
    Filed: September 28, 2017
    Publication date: July 2, 2020
    Inventors: Srinath MADASU, Keshava Prasad RANGARAJAN
  • Publication number: 20200200931
    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: Application
    Filed: December 21, 2017
    Publication date: June 25, 2020
    Inventors: Youli Mao, Raja Vikram Pandya, Bhaskar Mandapaka, Keshava Prasad Rangarajan, Srinath Madasu, Satyam Priyadarshy, Ashwani Dev
  • Publication number: 20200173269
    Abstract: A system for real-time steering of a drill bit includes a drilling arrangement and a computing device in communication with the drilling arrangement. The system iteratively, or repeatedly, receives new data associated the wellbore. At each iteration, a model, for example an engineering model, is applied to the new data to produce an objective function defining the selected drilling parameter. The objective function is modified at each iteration to provide an updated value for the selected drilling parameter and an updated value for at least one controllable parameter. In one example, the function is modified using Bayesian optimization The system iteratively steers the drill bit to obtain the updated value for the selected drilling parameter by applying the updated value for at least one controllable parameter over the period of time that the wellbore is being formed.
    Type: Application
    Filed: August 21, 2017
    Publication date: June 4, 2020
    Inventors: Srinath MADASU, Keshava Prasad RANGARAJAN, Robello SAMUEL, Nishant RAIZADA
  • Publication number: 20200160173
    Abstract: Embodiments of the subject technology for deep learning based reservoir modelling provides for receiving input data comprising information associated with one or more well logs in a region of interest. The subject technology determines, based at least in part on the input data, an input feature associated with a first deep neural network (DNN) for predicting a value of a property at a location within the region of interest. Further, the subject technology trains, using the input data and based at least in part on the input feature, the first DNN. The subject technology predicts, using the first DNN, the value of the property at the location in the region of interest. The subject technology utilizes a second DNN that classifies facies based on the predicted property in the region of interest.
    Type: Application
    Filed: July 21, 2017
    Publication date: May 21, 2020
    Inventors: Yogendra Narayan Pandey, Keshava Prasad Rangarajan, Jeffrey Marc Yarns, Naresh Chaudhary, Nagaraj Srinivasan, James Etienne
  • Publication number: 20170308602
    Abstract: Various embodiments include apparatus and methods to synchronize virtualized data, or subsets of virtualized data, across a plurality of data repositories. The synchronization may be conducted in a data virtualization platform separate from the plurality of physical data repositories without requiring direct access to the plurality of physical data repositories. Additional apparatus, systems, and methods are disclosed.
    Type: Application
    Filed: January 9, 2015
    Publication date: October 26, 2017
    Inventors: Ramesh Kumar Raghunathan, Ralph Lynn Nichols, Keshava Prasad Rangarajan, Chandra Yeleshwarapu