Patents by Inventor Antonio C. F. Critsinelis

Antonio C. F. Critsinelis 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: 20210231249
    Abstract: Disclosed are systems and methods for thermal management of subsea interconnecting conduit such as jumpers that provide cooling and heat retention of production fluids within the jumpers. In a jumper circuit, parallel sections of jumper are provided having differing amounts of heat transfer between surrounding seawater and production fluids flowing within. Valving is provided to control fluid flow between the parallel sections of jumper, thus controlling the amount of heat transfer between the surrounding seawater and the jumper circuit. A control system can be used to generate an alarm based on fluid temperature and/or fluid flow rate within the jumper circuit indicating the need to adjust the valving to manage the temperature of fluids within the jumper circuit. Changes may be needed particularly depending on the phase of production, e.g., early life, normal operation, shut down and late life operation.
    Type: Application
    Filed: January 28, 2020
    Publication date: July 29, 2021
    Applicant: Chevron U.S.A. Inc.
    Inventors: Antonio C.F. CRITSINELIS, Sid MEBARKIA, Michelle A. WISE, Yesudas J. MANIMALA, William C. HUGHES, Steven W. COCHRAN, Edgar URIBE, Jason D. GARCIA
  • Publication number: 20210230975
    Abstract: Disclosed are systems and methods for thermal management of subsea conduits such as jumpers that provide the ability to alternate between cooling and heat retention of production fluids within the conduit as needed depending on the phase of operation. Adjustable insulation elements are provided on the conduits so that convective heat transfer between surrounding seawater and the conduit can be allowed or reduced. A control system can activate an alarm indicating the need to adjust the insulation depending on the temperature and/or flow rate of fluids in the conduit. Conventional conduits can be retrofitted by adding adjustable insulation elements to enable thermal management.
    Type: Application
    Filed: January 28, 2020
    Publication date: July 29, 2021
    Applicant: Chevron U.S.A. Inc.
    Inventors: Antonio C.F. CRITSINELIS, Sid MEBARKIA, Michelle A. WISE, Yesudas J. MANIMALA, William C. HUGHES, Steven W. COCHRAN, Edgar URIBE, Jason D. GARCIA
  • Publication number: 20210230976
    Abstract: Disclosed are systems and methods for thermal management of subsea jumpers that provide the ability to cool and/or retain heat in production fluids within the jumpers. The jumpers are provided with an annular pipe section surrounding the jumper circumferentially. The flow of a liquid cooling medium into an inlet and out an outlet of the annular pipe section can be controlled to provide cooling or heat retention as needed. A control system can be used to generate an alarm based on fluid temperature and/or fluid flow rate within the jumper indicating the need to adjust the flow of the cooling medium to manage the temperature of fluids within the jumper. Changes may be needed particularly depending on the phase of production, e.g., early life, normal operation, shut down and late life operation.
    Type: Application
    Filed: January 28, 2020
    Publication date: July 29, 2021
    Applicant: Chevron U.S.A. Inc.
    Inventors: Antonio C.F. CRITSINELIS, Sid MEBARKIA, Michelle A. WISE, Yesudas J. MANIMALA, William C. HUGHES, Steven W. COCHRAN, Edgar URIBE, Jason D. GARCIA
  • Publication number: 20210231250
    Abstract: Disclosed are systems and methods for thermal management of subsea conduits. A jumper that carries oil and/or gas produced from a subsea well in a subsea production facility located on a seabed has a first end for connecting to a first subsea component and a second end for connecting to a second subsea component. The jumper includes a jumper segment that is sloped relative to the horizontal, such that gravity assists with drainage of fluid from the second end of the jumper independent from fluid pressure in the jumper. At least a portion of the jumper is uninsulated to allow exchange of heat with seawater surrounding the jumper as produced fluid travels through the jumper. The amount of insulation on the jumper can be varied such that heat transfer from the production fluids to seawater surrounding the jumper circuit is adjusted as desired.
    Type: Application
    Filed: January 28, 2020
    Publication date: July 29, 2021
    Applicant: Chevron U.S.A. Inc.
    Inventors: Antonio C.F. Critsinelis, Sid MEBARKIA, Michelle A. WISE, Yesudas J. MANIMALA, William C. HUGHES, Steven W. COCHRAN, Edgar URIBE, Jason D. GARCIA
  • Publication number: 20200399962
    Abstract: Disclosed are systems for securing a bend stiffener to a riser in an offshore energy production facility. In one system, the lower end of the bend stiffener has a magnet that repels a magnet in a clamp on the riser a distance below the bend stiffener. The magnets repel one another with a force during operation to decelerate falling and prevent contact between the clamp and the bend stiffener. Methods are provided for retrofitting a riser system by adding the magnets. In another system, the riser has an upper portion and a tapered portion immediately below the upper portion. The outer diameter of the tapered portion increases such that the tapered portion can be friction fit into the lower end of the bend stiffener in the event that the bend stiffener is forced down or free falls onto the riser.
    Type: Application
    Filed: June 19, 2019
    Publication date: December 24, 2020
    Inventors: Antonio C.F. CRITSINELIS, Farzan PARSINEJAD, Matthew Davis HENSE, Gary Anthony GIORDANO
  • Patent number: 9683411
    Abstract: Disclosed are riser assemblies for connecting a topside structure and a subsea production facility. The assembly includes an upper riser having an upper end terminating at the topside structure, a flow diverting structure having an upper interface configured to connect to the upper riser and a lower interface configured to connect to at least two lower risers such that the upper riser is in communication with the at least two lower risers. Methods of deployment of the riser assemblies are also disclosed. The method includes connecting an upper riser to the topside structure, and connecting a first lower riser to a lower bore of the flow diverting structure such that the upper riser, the flow diverting structure and the first lower riser are connected, and the upper riser is in fluid communication with the first lower riser. Additional lower risers can be installed at a later time if desired.
    Type: Grant
    Filed: March 14, 2016
    Date of Patent: June 20, 2017
    Assignee: CHEVRON U.S.A. INC.
    Inventors: Christopher Allen Kassner, Antonio C. F. Critsinelis, Helena Miao, Keiron Anson
  • Patent number: 9662690
    Abstract: Disclosed is a pig assembly for maintaining a multi-diameter functional line with a large range of diameter variation for conveying fluid. The pig assembly includes a central shaft having a first shaft end and a second shaft end and at least one cylindrical pig body coaxially mounted on the central shaft. Attached to the at least one pig body are a plurality of arms capable of moving between an extended position radiating from the at least one pig body and a retracted position within the at least one pig body. Each of the pluralities of arms includes a spring to enable each arm of the plurality of arms to move into the extended position and to store potential energy when the arm is in the retracted position, and a roller to enable rolling contact between the pig assembly and an interior of a functional line during movement of the pig assembly within the functional line.
    Type: Grant
    Filed: July 15, 2014
    Date of Patent: May 30, 2017
    Assignee: CHEVRON U.S.A. INC.
    Inventors: Parsinejad Farzan, Antonio C. F. Critsinelis, Sid A. Mebarkia
  • Patent number: 9602045
    Abstract: A system, apparatus, and method are provided for monitoring a subsea flow device such as a subsea flowline. The apparatus generally includes a thermoelectric device that is adapted to generate electric power from a thermal potential between the subsea flow device and the surrounding seawater. A sensor that is powered by the thermoelectric device is adapted to monitor one or more characteristics of the flow device, such as temperature or strain, and provide a communication that is indicative of the characteristic. The communication may be a radiation output or an acoustic output.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: March 21, 2017
    Assignee: CHEVRON U.S.A. INC.
    Inventors: Sid A. Mebarkia, Antonio C. F. Critsinelis, Steven E. Wooldridge
  • Patent number: 9303795
    Abstract: Disclosed is a pipe-in-pipe apparatus comprising an inner pipe disposed within an outer pipe wherein the inner pipe is an engineered pipe or umbilical. The outer pipe will shield the inner pipe. As a result, the design of the inner pipe only needs to address the functions required for the engineered pipe-in-pipe apparatus. The end fittings of the system are designed for enabling maximum operation and intervention flexibility. The engineered pipe-in-pipe apparatus will allow longer sections of the inner pipe to be used which will reduce the amount of field fabrication and streamline the installation process. The apparatus may be used for both new piping systems as well as the updating or retrofitting of an existing onshore or offshore piping system.
    Type: Grant
    Filed: October 16, 2013
    Date of Patent: April 5, 2016
    Assignee: Chevron U.S.A. Inc.
    Inventors: Antonio C. F. Critsinelis, Christopher A. Kassner, Sid A. Mebarkia
  • Publication number: 20160018044
    Abstract: Disclosed is a pig assembly for maintaining a multi-diameter functional line with a large range of diameter variation for conveying fluid. The pig assembly includes a central shaft having a first shaft end and a second shaft end and at least one cylindrical pig body coaxially mounted on the central shaft. Attached to the at least one pig body are a plurality of arms capable of moving between an extended position radiating from the at least one pig body and a retracted position within the at least one pig body. Each of the pluralities of arms includes a spring to enable each arm of the plurality of arms to move into the extended position and to store potential energy when the arm is in the retracted position, and a roller to enable rolling contact between the pig assembly and an interior of a functional line during movement of the pig assembly within the functional line.
    Type: Application
    Filed: July 15, 2014
    Publication date: January 21, 2016
    Applicant: Chevron U.S.A. Inc.
    Inventors: Parsinejad Farzam, Antonio C.F. Critsinelis, Sid A. Mebarkia
  • Publication number: 20150159481
    Abstract: A system, apparatus, and method are provided for monitoring a subsea flow device such as a subsea flowline. The apparatus generally includes a thermoelectric device that is adapted to generate electric power from a thermal potential between the subsea flow device and the surrounding seawater. A sensor that is powered by the thermoelectric device is adapted to monitor one or more characteristics of the flow device, such as temperature or strain, and provide a communication that is indicative of the characteristic. The communication may be a radiation output or an acoustic output.
    Type: Application
    Filed: September 25, 2014
    Publication date: June 11, 2015
    Applicant: Chevron U.S.A. Inc.
    Inventors: Sid A. Mebarkia, Antonio C.F. Critsinelis, Steven E. Wooldridge
  • Patent number: 8950499
    Abstract: An apparatus is disclosed which provides fluid communication between the inner bore and the annular space in a pipe-in-pipe system. Other embodiments disclose an apparatus which provides fluid communication between adjacent segments of the annular space, between the inner bore or the annular space and an external source in a pipe-in-pipe type system. Methods and systems are disclosed utilizing the various apparatus embodiments to transport well fluids in an offshore or onshore hydrocarbon production operation.
    Type: Grant
    Filed: July 26, 2011
    Date of Patent: February 10, 2015
    Assignee: Chevron U.S.A. Inc.
    Inventors: Antonio C. F. Critsinelis, Sid A. Mebarkia, Michael Quinney, Miguel Ruiz
  • Patent number: 8820412
    Abstract: Disclosed are methods, systems and apparatus for circulating fluid within the annulus of a flexible pipe used in a riser in an offshore hydrocarbon production facility. Fluid, such corrosion inhibitors, can be introduced into the annulus by pumping fluid from a storage tank located on a platform or vessel into tubes within the annulus. Use of the system to flow the fluid through the annulus can prevent or reduce corrosion of the steel members within the annulus and increase the fatigue life of the riser.
    Type: Grant
    Filed: September 16, 2011
    Date of Patent: September 2, 2014
    Assignee: Chevron U.S.A. Inc.
    Inventors: Antonio C. F. Critsinelis, Christopher A. Kassner, Farzan Parsinejad, Ahmed Omar
  • Patent number: 8783358
    Abstract: Disclosed is a process and system for circulating fluid within the annulus of a flexible pipe used in a riser in an offshore hydrocarbon production facility. Fluid, such as corrosion inhibitors, can be circulated in a closed loop which includes the annulus of the riser terminating at a platform or floating vessel, a fluid storage tank located on the platform or vessel and an umbilical tube terminating at the platform or vessel and at a subsea location. Use of the system to flow the fluid through the annulus can prevent or reduce corrosion of the steel members within the annulus and increase the fatigue life of the riser.
    Type: Grant
    Filed: September 16, 2011
    Date of Patent: July 22, 2014
    Assignee: Chevron U.S.A. Inc.
    Inventors: Antonio C. F. Critsinelis, Christopher A. Kassner, Farzan Parsinejad, Ahmed Omar
  • Patent number: 8721222
    Abstract: Disclosed are systems and methods for controlling lateral deformation and reducing axial displacement, also referred to as walking, of a subsea conduit such as a pipeline for conveying produced hydrocarbon fluids. The systems and methods include the installation of rolling assemblies on the conduit at predetermined locations. The rolling assemblies include elements for forming rolling modules rotatable with respect to the conduit. Also disclosed is a system for monitoring displacement of the conduit over time.
    Type: Grant
    Filed: November 4, 2011
    Date of Patent: May 13, 2014
    Assignee: Chevron U.S.A. Inc.
    Inventors: Sid A. Mebarkia, Antonio C. F. Critsinelis, Dane Drew, Michael J. Quinney, Lynn Wang
  • Publication number: 20140116556
    Abstract: Disclosed is a pipe-in-pipe apparatus comprising an inner pipe disposed within an outer pipe wherein the inner pipe is an engineered pipe or umbilical. The outer pipe will shield the inner pipe. As a result, the design of the inner pipe only needs to address the functions required for the engineered pipe-in-pipe apparatus. The end fittings of the system are designed for enabling maximum operation and intervention flexibility. The engineered pipe-in-pipe apparatus will allow longer sections of the inner pipe to be used which will reduce the amount of field fabrication and streamline the installation process. The apparatus may be used for both new piping systems as well as the updating or retrofitting of an existing onshore or offshore piping system.
    Type: Application
    Filed: October 16, 2013
    Publication date: May 1, 2014
    Applicant: Chevron U.S.A. Inc.
    Inventors: Antonio C.F. Critsinelis, Christopher A. Kassner, Sid A. Mebarkia
  • Publication number: 20130115009
    Abstract: Disclosed are systems and methods for controlling lateral deformation and reducing axial displacement, also referred to as walking, of a subsea conduit such as a pipeline for conveying produced hydrocarbon fluids. The systems and methods include the installation of rolling assemblies on the conduit at predetermined locations. The rolling assemblies include elements for forming rolling modules rotatable with respect to the conduit. Also disclosed is a system for monitoring displacement of the conduit over time.
    Type: Application
    Filed: November 4, 2011
    Publication date: May 9, 2013
    Applicant: Chevron U.S.A. Inc.
    Inventors: Sid A. Mebarkia, Antonio C.F. Critsinelis, Dane Drew, Michael J. Quinney, Lynn Wang
  • Publication number: 20130068464
    Abstract: Disclosed are methods, systems and apparatus for circulating fluid within the annulus of a flexible pipe used in a riser in an offshore hydrocarbon production facility. Fluid, such corrosion inhibitors, can be introduced into the annulus by pumping fluid from a storage tank located on a platform or vessel into tubes within the annulus. Use of the system to flow the fluid through the annulus can prevent or reduce corrosion of the steel members within the annulus and increase the fatigue life of the riser.
    Type: Application
    Filed: September 16, 2011
    Publication date: March 21, 2013
    Applicant: Chevron U.S.A. Inc.
    Inventors: Antonio C.F. Critsinelis, Christopher A. Kassner, Farzan Parsinejad, Ahmed Omar
  • Publication number: 20130068465
    Abstract: Disclosed is a process and system for circulating fluid within the annulus of a flexible pipe used in a riser in an offshore hydrocarbon production facility. Fluid, such as corrosion inhibitors, can be circulated in a closed loop which includes the annulus of the riser terminating at a platform or floating vessel, a fluid storage tank located on the platform or vessel and an umbilical tube terminating at the platform or vessel and at a subsea location. Use of the system to flow the fluid through the annulus can prevent or reduce corrosion of the steel members within the annulus and increase the fatigue life of the riser.
    Type: Application
    Filed: September 16, 2011
    Publication date: March 21, 2013
    Applicant: Chevron U.S.A. Inc.
    Inventors: Antonio C.F. Critsinelis, Christopher A. Kassner, Farzan Parsinejad, Ahmed Omar
  • Publication number: 20130025875
    Abstract: An apparatus is disclosed which provides fluid communication between the inner bore and the annular space in a pipe-in-pipe system. Other embodiments disclose an apparatus which provides fluid communication between adjacent segments of the annular space, between the inner bore or the annular space and an external source in a pipe-in-pipe type system. Methods and systems are disclosed utilizing the various apparatus embodiments to transport well fluids in an offshore or onshore hydrocarbon production operation.
    Type: Application
    Filed: July 26, 2011
    Publication date: January 31, 2013
    Applicant: Chevron U.S.A. Inc.
    Inventors: Antonio C.F. Critsinelis, Sid A. Mebarkia, Michael Quinney, Miguel Ruiz