Patents by Inventor Maja Ignova
Maja Ignova 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).
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Publication number: 20230392447Abstract: A method for controlling a drilling trajectory of a downhole tool includes receiving a drilling plan for a downhole tool to drill a wellbore toward a target in a subterranean formation. The method also includes receiving a measured drilling trajectory of the downhole tool after the downhole tool drills a first portion of the wellbore using the planned drilling trajectory. The method also includes determining a state of the downhole tool based at least partially upon the planned drilling trajectory and the measured drilling trajectory. The state includes a difference between the planned drilling trajectory and the measured drilling trajectory, a level of control of a steering capability of the downhole tool, and a location of an end of the wellbore. The method also includes generating a working plan trajectory based at least partially upon the state of the downhole tool and the drilling plan.Type: ApplicationFiled: October 1, 2021Publication date: December 7, 2023Inventors: Maja Ignova, Samba Ba, Katharine Mantle, Ekaterina Brovko
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Patent number: 11802472Abstract: A downhole closed loop method for controlling a curvature of a subterranean wellbore while drilling includes controlling a direction of drilling such that the drilling attitude is substantially equal to a setpoint attitude. A setpoint rate of penetration is processed in combination with a setpoint dogleg severity to compute a setpoint attitude increment. The setpoint attitude may be adjusted by the setpoint attitude increment. The setpoint attitude may be incremented at some interval to control the curvature of the wellbore while drilling.Type: GrantFiled: January 13, 2023Date of Patent: October 31, 2023Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Peter Hornblower, Steven David Hough, Maja Ignova
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Publication number: 20230151726Abstract: A downhole closed loop method for controlling a curvature of a subterranean wellbore while drilling includes controlling a direction of drilling such that the drilling attitude is substantially equal to a setpoint attitude. A setpoint rate of penetration is processed in combination with a setpoint dogleg severity to compute a setpoint attitude increment. The setpoint attitude may be adjusted by the setpoint attitude increment. The setpoint attitude may be incremented at some interval to control the curvature of the wellbore while drilling.Type: ApplicationFiled: January 13, 2023Publication date: May 18, 2023Inventors: Peter Hornblower, Steven David Hough, Maja Ignova
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Publication number: 20230130310Abstract: A method for drilling a subterranean wellbore includes rotating a bottom hole assembly (BHA) in the wellbore to drill. The BHA includes a rotary steerable tool or a steerable drill bit having at least one external pad that extends radially outward into contact with a wall of the wellbore and thereby steers while drilling. A toolface demand is received and processed to compute open and close toolface angles for opening and closing a valve that actuates the steering pad. The rotation rate of the BHA is measured and processed to compute times for opening and closing the valve. The valve is opened and closed at the computed times and toolface angles at which the valve opens and closes are measured. The open and close toolface angles are compared with the measured toolface values to obtain a toolface error which is then processed to compute new open and close toolface angles.Type: ApplicationFiled: October 20, 2022Publication date: April 27, 2023Inventor: Maja Ignova
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Patent number: 11585203Abstract: A downhole closed loop method for controlling a curvature of a subterranean wellbore while drilling includes controlling a direction of drilling such that the drilling attitude is substantially equal to a setpoint attitude. A setpoint rate of penetration is processed in combination with a setpoint dogleg severity to compute a setpoint attitude increment. The setpoint attitude may be adjusted by the setpoint attitude increment. The setpoint attitude may be incremented at some interval to control the curvature of the wellbore while drilling.Type: GrantFiled: April 28, 2021Date of Patent: February 21, 2023Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Peter Hornblower, Steven David Hough, Maja Ignova
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Publication number: 20220290550Abstract: A method can include receiving data for a bottom hole assembly of a drillstring and a drill plan; generating candidate trajectories using at least a portion of the data; generating drill command schedules for the candidate trajectories; ranking the candidate trajectories based at least in part on the drill command schedules; and outputting at least a top ranked candidate trajectory and its corresponding drill command schedule.Type: ApplicationFiled: March 3, 2022Publication date: September 15, 2022Inventors: Samba Ba, Lu Jiang, Adrien Chassard, Magnus Hedlund, Maja Ignova, Katharine Mantle, Jinsoo Kim, Tao Yu, Farid Toghi, Hendrik Suryadi, Qing Liu, Diego Medina
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Publication number: 20220170359Abstract: A method can include acquiring drilling performance data for a downhole tool; modeling drilling performance of the downhole tool to generate results; training a machine learning model using the drilling performance data and the results to generate a trained machine learning model; and predicting behavior of the downhole tool using the trained machine learning model.Type: ApplicationFiled: March 20, 2020Publication date: June 2, 2022Inventors: Riadh Boualleg, Geoffrey Charles Downton, Jean Marie Degrange, Steven G. Villareal, Maja Ignova, Ling Li, Katharine L. Mantle, Tao Yu, Jia Yao, Kai Feng Zhao, Paul Bolchover
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Publication number: 20210246775Abstract: A downhole closed loop method for controlling a curvature of a subterranean wellbore while drilling includes controlling a direction of drilling such that the drilling attitude is substantially equal to a setpoint attitude. A setpoint rate of penetration is processed in combination with a setpoint dogleg severity to compute a setpoint attitude increment. The setpoint attitude may be adjusted by the setpoint attitude increment. The setpoint attitude may be incremented at some interval to control the curvature of the wellbore while drilling.Type: ApplicationFiled: April 28, 2021Publication date: August 12, 2021Inventors: Peter Hornblower, Steven David Hough, Maja Ignova
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Publication number: 20210180439Abstract: A method for dynamically constructing a well includes receiving inputs that specify characteristics of a proposed well. An indicator is generated for construction of the proposed well using the inputs and a machine learning model trained using data from actual wells, and the indicator is transmitted.Type: ApplicationFiled: December 10, 2020Publication date: June 17, 2021Inventors: Sarah Louise Rawlinson, Avirup Bhattacharyya, George Emlyn Jones, Andrew Whitmore, Maja Ignova, Ian Farmer
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Patent number: 10995604Abstract: A downhole closed loop method for controlling a curvature of a subterranean wellbore while drilling includes controlling a direction of drilling such that the drilling attitude is substantially equal to a setpoint attitude. A setpoint rate of penetration is processed in combination with a setpoint dogleg severity to compute a setpoint attitude increment. The setpoint attitude may be adjusted by the setpoint attitude increment. The setpoint attitude may be incremented at some interval to control the curvature of the wellbore while drilling.Type: GrantFiled: November 30, 2016Date of Patent: May 4, 2021Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Peter Hornblower, Steven David Hough, Maja Ignova
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Publication number: 20180363444Abstract: A downhole closed loop method for controlling a curvature of a subterranean wellbore while drilling includes controlling a direction of drilling such that the drilling attitude is substantially equal to a setpoint attitude. A setpoint rate of penetration is processed in combination with a setpoint dogleg severity to compute a setpoint attitude increment. The setpoint attitude may be adjusted by the setpoint attitude increment. The setpoint attitude may be incremented at some interval to control the curvature of the wellbore while drilling.Type: ApplicationFiled: November 30, 2016Publication date: December 20, 2018Inventors: Peter Hornblower, Steven David Hough, Maja Ignova
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Patent number: 9605480Abstract: A drill control system includes an uphole control device and a downhole control device. The uphole control device is configured to transmit a reference trajectory to the downhole control device and receive information about an actual trajectory from the downhole control device. The downhole control device is configured to receive the reference trajectory from the uphole control device, measure the actual trajectory, correct deviations between the reference trajectory and the actual trajectory, and transmit information about the actual trajectory to the uphole control device.Type: GrantFiled: June 16, 2014Date of Patent: March 28, 2017Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Maja Ignova, Geoffrey C. Downton, Dimitrios K. Pirovolou
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Patent number: 9222308Abstract: A method for drilling operation in a subterranean formation, including calculating, by a hardware processor and in response to determining that an magnitude of gyro data representing rotations of a drill bit in a bottom hole assembly (BHA) and a time derivative of the gyro data are within a pre-determined range, a drift parameter of the gyro data, analyzing, by the hardware processor, the gyro data based on the drift parameter to generate a stick-slip alert, and presenting the stick-slip alert.Type: GrantFiled: June 21, 2012Date of Patent: December 29, 2015Assignee: Schlumberger Technology CorporationInventors: Firas Zeineddine, Maja Ignova
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Publication number: 20150361725Abstract: The instant invention provides apparatus and methods for directional drilling. One embodiment of the invention provides a drill control system including an uphole control device and a downhole control device. The uphole control device is configured to: transmit a reference trajectory to the downhole control device and receive information about an actual trajectory from the downhole control device. The downhole control device is configured to: receive the reference trajectory from the uphole control device, measure the actual trajectory, correct deviations between the reference trajectory and the actual trajectory, and transmit information about the actual trajectory to the uphole control device.Type: ApplicationFiled: June 16, 2014Publication date: December 17, 2015Inventors: Maja Ignova, Geoffrey C. Downton, Dimitrios K. Pirovolou
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Patent number: 8783382Abstract: Apparatus and methods for directional drilling are provided. A drill control system includes an uphole control device and a downhole control device. The uphole control device is configured to: transmit a reference trajectory to the downhole control device and receive information about an actual trajectory from the downhole control device. The downhole control device is configured to: receive the reference trajectory from the uphole control device, measure the actual trajectory, correct deviations between the reference trajectory and the actual trajectory, and transmit information about the actual trajectory to the uphole control device.Type: GrantFiled: January 15, 2009Date of Patent: July 22, 2014Assignee: Schlumberger Technology CorporationInventors: Maja Ignova, Geoff Downton, Dimitrios Pirovolou
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Publication number: 20130341090Abstract: A method for drilling operation in a subterranean formation, including calculating, by a hardware processor and in response to determining that an magnitude of gyro data representing rotations of a drill bit in a bottom hole assembly (BHA) and a time derivative of the gyro data are within a pre-determined range, a drift parameter of the gyro data, analyzing, by the hardware processor, the gyro data based on the drift parameter to generate a stick-slip alert, and presenting the stick-slip alert.Type: ApplicationFiled: June 21, 2012Publication date: December 26, 2013Inventors: Firas Zeineddine, Maja Ignova
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Publication number: 20100175922Abstract: The instant invention provides apparatus and methods for directional drilling. One embodiment of the invention provides a drill control system including an uphole control device and a downhole control device. The uphole control device is configured to: transmit a reference trajectory to the downhole control device and receive information about an actual trajectory from the downhole control device. The downhole control device is configured to: receive the reference trajectory from the uphole control device, measure the actual trajectory, correct deviations between the reference trajectory and the actual trajectory, and transmit information about the actual trajectory to the uphole control device.Type: ApplicationFiled: January 15, 2009Publication date: July 15, 2010Applicant: Schlumberger Technology CorporationInventors: Maja Ignova, Geoff Downton, Dimitrios Pirovolou