Patents by Inventor Hailing An
Hailing An 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: 20250109652Abstract: A method for evaluating performance of a choke valve includes collecting baseline performance data for the choke valve during a first time period; establishing a relationship between a flow area and positions of the choke valve for the first time period; collecting measurements of parameters associated with the choke valve during a second time period; generating a predicted flow area of the choke valve during a second time period;, generating an estimated flow area through the choke valve during the second time period using the relationship established during the first time period; comparing the estimated flow area with the predicted flow area for the second time period; and determining that the performance of the choke valve is no longer within the range of acceptable performance values when a difference between the estimated and predicted flow areas for the second time period falls outside a range of threshold values.Type: ApplicationFiled: May 2, 2022Publication date: April 3, 2025Inventors: Hailing An, James Nileshwar
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Publication number: 20240426395Abstract: A method for remotely evaluating a hydraulic valve may include obtaining multiple values associated with measurements of a parameter, where the measurements are measured by multiple sensor devices, where the sensor devices are configured to measure the parameter at multiple locations along a network of hydraulic lines that circulates a hydraulic fluid with respect to an actuator of the hydraulic valve, and where the parameter is associated with an actuator of the hydraulic valve during a subterranean field operation; executing an algorithm using the measurements to generate a result; comparing the result of the algorithm with a range of acceptable values, where the range of acceptable values is established using prior results of the algorithm; and determining that the hydraulic valve has a potential failure when the result falls outside the range of acceptable values.Type: ApplicationFiled: June 21, 2023Publication date: December 26, 2024Inventors: Hailing An, Scott Eric Weatherwax, Miao Miao, Minh Duc Vo
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Patent number: 11621789Abstract: Magneto-quasistatic signals may be used to enable under-liquid communication between devices. A magneto-quasistatic signal transmitter of an under-liquid device may transmit a magneto-quasistatic signal conveying communication data through liquid. A magneto-quasistatic signal receiver of another under-liquid device may receive the magneto-quasistatic signal and extract the communication data from the magneto-quasistatic signal. The under-liquid device that received the magneto-quasistatic signal may use the communication data, store the communicate data, and/or relay the communication data (e.g., to another under-liquid device, to an above-liquid device) using another magneto-quasistatic signal.Type: GrantFiled: November 4, 2020Date of Patent: April 4, 2023Assignees: Chevron U.S.A. Inc., California Institute of TechnologyInventors: Robert Kwan Meng Seah, Hailing An, Baha Tulu Tanju, Darmindra Arumugam
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Patent number: 11614331Abstract: Magneto-electric quasistatic (MEQS) field may be used to track positions of persons and/or objects inside metallic environments. A magneto-electric quasistatic field generator may generate a magneto-electric quasistatic field inside a metallic environment. A magneto-electric quasistatic field detector inside the metallic environment may detect the magneto-electric quasistatic field and generate output signals conveying characteristics of the magneto-electric quasistatic field. The relative position of the magneto-electric quasistatic field detector with respect to the magneto-electric quasistatic field generator may be determined based on the output signals. The position of the magneto-electric quasistatic field detector/generator and/or the position of a person/object carrying the magneto-electric quasistatic field detector/generator may be tracked using the relative position of the magneto-electric quasistatic field detector with respect to the magneto-electric quasistatic field generator.Type: GrantFiled: November 4, 2020Date of Patent: March 28, 2023Assignees: Chevron U.S.A. Inc., California Institute of TechnologyInventors: Robert Kwan Meng Seah, Hailing An, Darmindra Arumugam
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Patent number: 11566511Abstract: A magneto-quasistatic field may be used to align hydrogen of materials within a structure and/or to disrupt the alignment of hydrogen of materials within the structure. Realignment of the hydrogen after the disruption may cause emission of energy from the hydrogen. The characteristic(s) of the energy may be detected and used to generate image(s) of interior portion(s) of the structure.Type: GrantFiled: November 4, 2020Date of Patent: January 31, 2023Assignees: Chevron U.S.A. Inc., California Institute of TechnologyInventors: Robert Kwan Meng Seah, Hailing An, Thomas E. O'Donnell, Darmindra Arumugam
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Publication number: 20210131267Abstract: A magneto-quasistatic field may be used to align hydrogen of materials within a structure and/or to disrupt the alignment of hydrogen of materials within the structure. Realignment of the hydrogen after the disruption may cause emission of energy from the hydrogen. The characteristic(s) of the energy may be detected and used to generate image(s) of interior portion(s) of the structure.Type: ApplicationFiled: November 4, 2020Publication date: May 6, 2021Inventors: Robert Kwan Meng SEAH, Hailing AN, Thomas E. O'DONNELL, Darmindra Arumugam
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Publication number: 20210131810Abstract: Magneto-electric quasistatic (MEQS) field may be used to track positions of persons and/or objects inside metallic environments. A magneto-electric quasistatic field generator may generate a magneto-electric quasistatic field inside a metallic environment. A magneto-electric quasistatic field detector inside the metallic environment may detect the magneto-electric quasistatic field and generate output signals conveying characteristics of the magneto-electric quasistatic field. The relative position of the magneto-electric quasistatic field detector with respect to the magneto-electric quasistatic field generator may be determined based on the output signals. The position of the magneto-electric quasistatic field detector/generator and/or the position of a person/object carrying the magneto-electric quasistatic field detector/generator may be tracked using the relative position of the magneto-electric quasistatic field detector with respect to the magneto-electric quasistatic field generator.Type: ApplicationFiled: November 4, 2020Publication date: May 6, 2021Inventors: Robert Kwan Meng SEAH, Hailing AN, Darmindra Arumugam
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Publication number: 20210135769Abstract: Magneto-quasistatic signals may be used to enable under-liquid communication between devices. A magneto-quasistatic signal transmitter of an under-liquid device may transmit a magneto-quasistatic signal conveying communication data through liquid. A magneto-quasistatic signal receiver of another under-liquid device may receive the magneto-quasistatic signal and extract the communication data from the magneto-quasistatic signal. The under-liquid device that received the magneto-quasistatic signal may use the communication data, store the communicate data, and/or relay the communication data (e.g., to another under-liquid device, to an above-liquid device) using another magneto-quasistatic signal.Type: ApplicationFiled: November 4, 2020Publication date: May 6, 2021Inventors: Robert Kwan Meng SEAH, Hailing AN, Baha Tulu TANJU, Darmindra Arumugam
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Patent number: 8955595Abstract: An apparatus and method for providing a controllable supply of fluid, and optionally power and/or communication signals, to a subsea equipment are provided. The fluid may be a water-based fluid, oil-based fluid, or chemicals. The apparatus includes a reservoir disposed on a seabed for storing a supply of fluid for delivery to the subsea well equipment. A subsea pumping device is configured to receive the fluid from the reservoir, pressurize the fluid, and deliver the pressurized fluid to an accumulator of a hydraulic power unit disposed on the seabed. The hydraulic power unit can store the pressurized fluid and control an output of the pressurized fluid to the subsea well equipment, thereby providing a subsea fluid source for the subsea equipment.Type: GrantFiled: November 18, 2009Date of Patent: February 17, 2015Assignee: Chevron U.S.A. Inc.Inventors: Chukwuemeka U. Emecheta, Thomas E. O'Donnell, Omid Oujani, Hailing An, Baha T. Tanju, George Siappas
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Publication number: 20110114329Abstract: An apparatus and method for providing a controllable supply of fluid, and optionally power and/or communication signals, to a subsea equipment are provided. The fluid may be a water-based fluid, oil-based fluid, or chemicals. The apparatus includes a reservoir disposed on a seabed for storing a supply of fluid for delivery to the subsea well equipment. A subsea pumping device is configured to receive the fluid from the reservoir, pressurize the fluid, and deliver the pressurized fluid to an accumulator of a hydraulic power unit disposed on the seabed. The hydraulic power unit can store the pressurized fluid and control an output of the pressurized fluid to the subsea well equipment, thereby providing a subsea fluid source for the subsea equipment.Type: ApplicationFiled: November 18, 2009Publication date: May 19, 2011Inventors: Chukwuemeka U. Emecheta, Thomas E. O'Donnell, Omid Oujani, Hailing An, Baha T. Tanju, George Siappas
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Patent number: 7895001Abstract: Accurate, dependable methods for analyzing operational parameters of subsea control systems and diagnosis/prediction of failures are provided, in particular, methods for detection of leaking and/or clogging in hydraulic control system using recorded pressure signals and evaluating response communication strength (signal amplitude) of field equipment from, for example, subsea control systems. Prediction of failure(s) allows an opportunity to prepare for intervention to minimize the impact of failure before failure occurs, for example, by ordering equipment, tools and/or scheduling an intervention vessel. Similarly, diagnosing a failure drastically shortens the intervention time.Type: GrantFiled: December 23, 2008Date of Patent: February 22, 2011Assignee: Chevron U.S.A. Inc.Inventors: Baha Tulu Tanju, Hailing An, Ashish Karamchandani
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Publication number: 20100161250Abstract: Accurate, dependable methods for analyzing operational parameters of subsea control systems and diagnosis/prediction of failures are provided, in particular, methods for detection of leaking and/or clogging in hydraulic control system using recorded pressure signals and evaluating response communication strength (signal amplitude) of field equipment from, for example, subsea control systems. Prediction of failure(s) allows an opportunity to prepare for intervention to minimize the impact of failure before failure occurs, for example, by ordering equipment, tools and/or scheduling an intervention vessel. Similarly, diagnosing a failure drastically shortens the intervention time.Type: ApplicationFiled: December 23, 2008Publication date: June 24, 2010Inventors: Baha Tulu Tanju, Hailing An, Ashish Karamchandani