Patents by Inventor Rajnikant M. Amin
Rajnikant M. Amin 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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Patent number: 6782950Abstract: The present invention relates to a subsea system for the production of hydrocarbon reserves. More specifically, the present invention relates to a control wellhead bouy that is used in deepwater operations for offshore hydrocarbon production. In a preferred embodiment, a bouy for supporting equipment for use in a remote offshore well or pipeline includes a hull having a diameter:height ratio of at least 3:1, a mooring system for maintaining the hull in a desired location, and an umbilical providing fluid communication between the hull and the well or pipeline.Type: GrantFiled: February 28, 2001Date of Patent: August 31, 2004Assignee: Kellogg Brown & Root, Inc.Inventors: Rajnikant M. Amin, James F. O'Sullivan, David A. Gray
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Patent number: 6701787Abstract: A method and apparatus for analyzing a deposited layer on the inner surface of a fluid container wall having inner and outer surfaces are disclosed. One embodiment of the method comprises (a) transmitting an acoustic signal from a transmitter at a first distance from the outer surface of the wall; (b) receiving a first received signal A, comprising a reflection from the wall outer surface; (c) receiving a second received signal B, comprising a reflection from the wall inner surface; (d) receiving a third received signal C from the wall inner surface; (e) calculating a coefficient Rwp from A, B and C, and (f) calculating a coefficient Rpd from A, B and Rwp, and calculating the acoustic impedance of the deposited layer Zd from Rwp, Rpd, and Zw, where Zw is the acoustic impedance of the material between the transmitter and the wall outer surface.Type: GrantFiled: August 19, 2002Date of Patent: March 9, 2004Assignee: Halliburton Energy Services, Inc.Inventors: Wei Han, Vimal V. Shah, James R. Birchak, Bruce H. Storm, Rajnikant M. Amin, Bayram Kalpakci, Fouad Fleyfel
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Patent number: 6656366Abstract: An apparatus and method are provided for preventing or reducing buildup of certain solids in a system or a conduit containing or conveying a fluid. The fluid can be a single phase liquid, such as a liquid hydrocarbon, or a multiphase fluid such as a mixture of several immiscible liquids, for example liquid hydrocarbon and water, plus a gaseous phase that may include hydrocarbon vapors as well as other gases, for example carbon dioxide, hydrogen sulfide, etc. Preferably, the fluid is crude oil. The solids include all solids precipitating from fluids due to thermodynamically or chemical composition driven forces, as well as materials that can change phases. Preferably, the solids are solids typically dissolved in crude oil, such as higher paraffins, asphaltenes, hydrates, organic salts, and inorganic salts.Type: GrantFiled: July 12, 2000Date of Patent: December 2, 2003Assignees: Halliburton Energy Services, Inc., Kellogg Brown & Root, Inc.Inventors: Gee Seng Fung, Rajnikant M. Amin, Bayram Kalpakci, Fouad Fleyfel, James F. O'Sullivan
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Patent number: 6568271Abstract: A system for monitoring the presence of deposits or buildup on the inside wall of a fluid-containing pipe comprises a pair of acoustic transmitters outside of the pipe and spaced apart along the length of the pipe and capable of transmitting an acoustic signal into the pipe wall, a pair of acoustic receivers outside of the pipe and spaced apart along the length of the pipe and capable of receiving an acoustic signal from the pipe wall, and a power source for causing the transmitters to transmit a signal.Type: GrantFiled: May 8, 2001Date of Patent: May 27, 2003Assignee: Halliburton Energy Services, Inc.Inventors: Vimal V. Shah, James R. Birchak, Wei Han, Bruce H. Storm, Rajnikant M. Amin, Bayram Kalpakci, Fouad Fleyfel
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Publication number: 20030033870Abstract: A system for monitoring the presence of deposits or buildup on the inside wall of a fluid-containing pipe comprises a pair of acoustic transmitters outside of the pipe and spaced apart along the length of the pipe and capable of transmitting an acoustic signal into the pipe wall, a pair of acoustic receivers outside of the pipe and spaced apart along the length of the pipe and capable of receiving an acoustic signal from the pipe wall, and a power source for causing the transmitters to transmit a signal.Type: ApplicationFiled: May 8, 2001Publication date: February 20, 2003Inventors: Vimal V. Shah, James R. Birchak, Wei Han, Bruce H. Storm, Rajnikant M. Amin, Bayram Kalpakci, Fouad Fleyfel
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Publication number: 20030024316Abstract: A method and apparatus for analyzing a deposited layer on the inner surface of a fluid container wall having inner and outer surfaces are disclosed. One embodiment of the method comprises (a) transmitting an acoustic signal from a transmitter at a first distance from the outer surface of the wall; (b) receiving a first received signal A, comprising a reflection from the wall outer surface; (c) receiving a second received signal B, comprising a reflection from the wall inner surface; (d) receiving a third received signal C from the wall inner surface; (e) calculating a coefficient Rwp from A, B and C, and (f) calculating a coefficient Rpd from A, B and Rwp, and calculating the acoustic impedance of the deposited layer Zd from Rwp, Rpd, and Zw, where Zw is the acoustic impedance of the material between the transmitter and the wall outer surface.Type: ApplicationFiled: August 19, 2002Publication date: February 6, 2003Applicant: Halliburton Energy Services, Inc.Inventors: Wei Han, Vimal V. Shah, James R. Birchak, Bruce H. Storm, Rajnikant M. Amin, Bayram Kalpakci, Fouad Fleyfel
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Patent number: 6513385Abstract: A method and apparatus for analyzing a deposited layer on the inner surface of a fluid container wall having inner and outer surfaces are disclosed. One embodiment of the method comprises (a) transmitting an acoustic signal from a transmitter at a first distance from the outer surface of the wall; (b) receiving a first received signal A, comprising a reflection from the wall outer surface; (c) receiving a second received signal B, comprising a reflection from the wall inner surface; (d) receiving a third received signal C from the wall inner surface; (e) calculating a coefficient Rwp from A, B and C, and (f) calculating a coefficient Rpd from A, B and Rwp, and calculating the acoustic impedance of the deposited layer Zd from Rwp, Rpd, and Zw, where Zw is the acoustic impedance of the material between the transmitter and the wall outer surface.Type: GrantFiled: May 8, 2001Date of Patent: February 4, 2003Assignee: Halliburton Energy Services, Inc.Inventors: Wei Han, Vimal V. Shah, James R. Birchak, Bruce H. Storm, Jr., Rajnikant M. Amin, Bayram Kalpakci, Fouad Fleyfel
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Publication number: 20030010125Abstract: A method and apparatus for analyzing a deposited layer on the inner surface of a fluid container wall having inner and outer surfaces are disclosed. One embodiment of the method comprises (a) transmitting an acoustic signal from a transmitter at a first distance from the outer surface of the wall; (b) receiving a first received signal A, comprising a reflection from the wall outer surface; (c) receiving a second received signal B, comprising a reflection from the wall inner surface; (d) receiving a third received signal C from the wall inner surface; (e) calculating a coefficient Rwp from A, B and C, and (f) calculating a coefficient Rpd from A, B and Rwp and calculating the acoustic impedance of the deposited layer Zd from Rwp, Rpd, and Zw, where Zw is the acoustic impedance of the material between the transmitter and the wall outer surface.Type: ApplicationFiled: May 8, 2001Publication date: January 16, 2003Inventors: Wei Han, Vimal V. Shah, James R. Birchak, Bruce H. Storm, Rajnikant M. Amin, Bayram Kalpakci, Fouad Fleyfel
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Publication number: 20020166383Abstract: A method for monitoring and measuring the buildup of deposits on the inner surface of a pipeline containing flowing fluid comprises (a) transmitting a first acoustic signal into the pipeline through the pipeline wall, (b) receiving echoes of the transmitted signal, and (c) determining from the received echoes how far from the pipeline inner surface the interface between the deposits and the flowing fluid lies. An alternative method for monitoring and measuring the buildup of deposits on the inner surface of a pipeline containing flowing fluid comprises (a) transmitting a first acoustic signal into the pipeline through the pipeline wall, (b) receiving echoes of the signal, and (c) using the Doppler frequency shift of the received echoes to determine how far from the pipeline inner surface the interface between the deposits and the flowing fluid lies.Type: ApplicationFiled: May 8, 2001Publication date: November 14, 2002Inventors: Wei Han, James R. Birchak, Crispin L. Richards, Vimal V. Shah, Bruce H. Storm, Rajnikant M. Amin
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Patent number: 6470749Abstract: A method for monitoring and measuring the buildup of deposits on the inner surface of a pipeline containing flowing fluid comprises (a) transmitting a first acoustic signal into the pipeline through the pipeline wall, (b) receiving echoes of the transmitted signal, and (c) determining from the received echoes how far from the pipeline inner surface the interface between the deposits and the flowing fluid lies. An alternative method for monitoring and measuring the buildup of deposits on the inner surface of a pipeline containing flowing fluid comprises (a) transmitting a first acoustic signal into the pipeline through the pipeline wall, (b) receiving echoes of the signal, and (c) using the Doppler frequency shift of the received echoes to determine how far from the pipeline inner surface the interface between the deposits and the flowing fluid lies.Type: GrantFiled: May 8, 2001Date of Patent: October 29, 2002Assignee: Halliburton Energy Services, Inc.Inventors: Wei Han, James R. Birchak, Crispin L. Richards, Vimal V. Shah, Bruce H. Storm, Rajnikant M. Amin
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Publication number: 20020044838Abstract: The present invention relates to a subsea system for the production of hydrocarbon reserves. More specifically, the present invention relates to a subsea system in economically and technically challenging environments. Still more specifically, the present invention relates to a control wellhead buoy that is used in deepwater operations for offshore hydrocarbon production.Type: ApplicationFiled: February 28, 2001Publication date: April 18, 2002Inventors: Rajnikant M. Amin, James F. O'Sullivan, David A. Gray