Patents by Inventor Kamal Kader
Kamal Kader 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: 11768191Abstract: Embodiments of the disclosure can include systems, methods, and devices for determining saturation pressure of an uncontaminated fluid. A technique facilitates fluid analysis in situ at a downhole location. Downhole saturation pressure measurements and downhole OBM filtrate contamination of a contaminated fluid may be obtained and a relationship may be determined between the saturation pressure measurements and OBM filtrate contamination. The relationship may be extrapolated to zero OBM filtrate contamination to determine the saturation pressure of the uncontaminated fluid. According to an embodiment, a sample of oil is obtained at the downhole location from oil in a reservoir. A downhole sampling system is used to determine whether a sample has contamination and other selected characteristics of the sample. The data obtained may be processed to provide a formation volume factor of the oil.Type: GrantFiled: May 13, 2021Date of Patent: September 26, 2023Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Younes Jalali, Ryota Tonoue, Hua Chen, Christopher Harrison, Kamal Kader, Youxiang Zuo, Adriaan Gisolf, Cosan Ayan, Michael Mallari Toribio, Chetankumar Natwarlal Desai, Oliver Clinton Mullins, Matthew T. Sullivan, Elizabeth Smythe
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Patent number: 11725942Abstract: A photonic integrated chip is configured as a transmitter-receiver chip. The photonic integrated chip includes a light emitter, a light detector, a multi-mode interference coupler, and a mode-filed adapter. The light emitted by the light emitter is guided to a core layer formed below the multi-mode interference coupler, and further to the mode-filed adapter for transmission of light to an optical fiber coupled with the photonic integrated chip. Similarly, light received by the mode-filed adapter from the optical fiber propagates to the core layer, and is guided by the multi-mode interference coupler into the light detector. The photonic integrated chip is utilized to realize a single-unit transmitter-receiver module for a fiber optic gyroscope circuit based on monolithic integration of photonics components via wafer fabrication on a substrate. The photonic integrated chip has a low fabrication cost, low size, and is robust.Type: GrantFiled: December 16, 2021Date of Patent: August 15, 2023Assignee: DENSELIGHT SEMICONDUCTORS PTE LTDInventors: Yee Loy Lam, Ter Hoe Loh, Kamal Kader, Long Cheng Koh
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Publication number: 20220329045Abstract: A laser module includes a gain chip, temperature sensors, a case, and a thermoelectric cooler (TEC). The gain chip emits a laser beam. One of the temperature sensors measures a first temperature of the gain chip and is encompassed by the gain chip. The other temperature sensor is adhered to the case and measures a second temperature. The TEC tunes the laser beam emitted by the gain chip to a desired wavelength by varying the first temperature of the gain chip through a set of third temperatures for various values of the second temperature. The set of third temperatures is selected from various values of the first temperature such that the laser beam emitted at the set of third temperatures is mode-hop free.Type: ApplicationFiled: March 24, 2022Publication date: October 13, 2022Applicant: DENSELIGHT SEMICONDUCTORS PTE LTDInventors: Kamal Kader, Long Cheng Koh, Andy Piper, Yee Loy Lam
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Publication number: 20220187074Abstract: A photonic integrated chip is configured as a transmitter-receiver chip. The photonic integrated chip includes a light emitter, a light detector, a multi-mode interference coupler, and a mode-filed adapter. The light emitted by the light emitter is guided to a core layer formed below the multi-mode interference coupler, and further to the mode-filed adapter for transmission of light to an optical fiber coupled with the photonic integrated chip. Similarly, light received by the mode-filed adapter from the optical fiber propagates to the core layer, and is guided by the multi-mode interference coupler into the light detector. The photonic integrated chip is utilized to realize a single-unit transmitter-receiver module for a fiber optic gyroscope circuit based on monolithic integration of photonics components via wafer fabrication on a substrate. The photonic integrated chip has a low fabrication cost, low size, and is robust.Type: ApplicationFiled: December 16, 2021Publication date: June 16, 2022Applicant: DENSELIGHT SEMICONDUCTORS PTE LTDInventors: Yee Loy Lam, Ter Hoe Loh, Kamal Kader, Long Cheng Koh
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Publication number: 20210263008Abstract: Embodiments of the disclosure can include systems, methods, and devices for determining saturation pressure of an uncontaminated fluid. A technique facilitates fluid analysis in situ at a downhole location. Downhole saturation pressure measurements and downhole OBM filtrate contamination of a contaminated fluid may be obtained and a relationship may be determined between the saturation pressure measurements and OBM filtrate contamination. The relationship may be extrapolated to zero OBM filtrate contamination to determine the saturation pressure of the uncontaminated fluid. According to an embodiment, a sample of oil is obtained at the downhole location from oil in a reservoir. A downhole sampling system is used to determine whether a sample has contamination and other selected characteristics of the sample. The data obtained may be processed to provide a formation volume factor of the oil.Type: ApplicationFiled: May 13, 2021Publication date: August 26, 2021Inventors: Younes Jalali, Ryota Tonoue, Hua Chen, Christopher Harrison, Kamal Kader, Youxiang Zuo, Adriaan Gisolf, Cosan Ayan, Michael Mallari Toribio, Chetankumar Natwarlal Desai, Oliver Clinton Mullins, Matthew T. Sullivan, Elizabeth Smythe
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Publication number: 20190145242Abstract: A technique facilitates fluid analysis in situ at a downhole location. According to an embodiment, a sample of oil is obtained at the downhole location from oil in a reservoir. A downhole sampling system is used to determine contamination of the sample and to determine other selected characteristics of the sample. The data obtained is then processed to provide a formation volume factor of the oil. The testing may be performed at selected stations along the borehole to facilitate rapid development of a realistic model of fluid distribution and property variation in the reservoir, thus enabling an improved oil recovery strategy.Type: ApplicationFiled: November 13, 2017Publication date: May 16, 2019Inventors: Younes Jalali, Ryota Tonoue, Hua Chen, Christopher Harrison, Kamal Kader
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Patent number: 10073042Abstract: A method and apparatus are provided for performing in-situ fluid analysis. The method involves obtaining a first and second mixture of uncontaminated oil and a contaminant, wherein a percentage of the uncontaminated oil in the first mixture is different from the second mixture. The method may further include establishing a rate of change of a physical property of the first mixture and the second mixture to estimate a mass density of the uncontaminated oil and a mass density of the contaminant. In addition, the method may include obtaining a volume fraction of the uncontaminated oil for the first mixture and second mixture using the mass density of the uncontaminated oil and the mass density of the contaminant. An optical device may be used to determine a composition of the first and second mixtures in order to calculate a composition of the contaminant and a composition of the uncontaminated oil.Type: GrantFiled: August 27, 2015Date of Patent: September 11, 2018Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Kang Wang, Younes Jalali, Yoko Morita, Kamal Kader, Yutaka Imasato
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Patent number: 9534494Abstract: Optical window assemblies are provided. An example apparatus includes a first fixture defining a fluid flow passageway. The example apparatus also includes a second fixture defining an aperture. The second fixture is coupled to the first fixture. A first optical window is disposed in the aperture. The first optical window has a first end and a second end. The first end is to be in contact with fluid in the fluid flow passageway, and a cross-sectional size of the first optical window decreases from the first end toward the second end along a portion of the first optical window.Type: GrantFiled: February 25, 2013Date of Patent: January 3, 2017Assignee: Schlumberger Technology CorporationInventors: Akira Kamiya, Stephane Vannuffelen, Kamal Kader, Hua Chen, Hisatoshi Matsumoto
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Publication number: 20160061743Abstract: A method and apparatus are provided for performing in-situ fluid analysis. The method involves obtaining a first and second mixture of uncontaminated oil and a contaminant, wherein a percentage of the uncontaminated oil in the first mixture is different from the second mixture. The method may further include establishing a rate of change of a physical property of the first mixture and the second mixture to estimate a mass density of the uncontaminated oil and a mass density of the contaminant. In addition, the method may include obtaining a volume fraction of the uncontaminated oil for the first mixture and second mixture using the mass density of the uncontaminated oil and the mass density of the contaminant. An optical device may be used to determine a composition of the first and second mixtures in order to calculate a composition of the contaminant and a composition of the uncontaminated oil.Type: ApplicationFiled: August 27, 2015Publication date: March 3, 2016Inventors: Kang Wang, Younes Jalali, Yoko Morita, Kamal Kader, Yutaka Imasato
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Publication number: 20160018245Abstract: A system receives data corresponding to light signals in the plurality of cores, the plurality of cores including a first pair of cores spaced apart laterally along a first direction in the optical fiber, and a second pair of cores spaced apart laterally along a second direction in the optical fiber. The system determines a directional measurement of a dynamic parameter based on the data corresponding to light signals in the plurality of cores, wherein directionality of the directional measurement is indicated by a difference between a response of the first pair of cores to a stimulus and a response of the second pair of cores to the stimulus.Type: ApplicationFiled: July 15, 2015Publication date: January 21, 2016Inventors: Tsutomu Yamate, Kamal Kader, Soon Seong Chee, Toru Ikegami, Masafumi Fukuhara, Nalin Weerasinghe
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Patent number: 9170149Abstract: A fiber optic sensor system includes an optical source to output a first optical signal to launch into an optical fiber, and a coherent detector to mix a coherent Rayleigh backscatter signal generated by the optical fiber in response to the first optical signal with a second optical signal output by the optical source and to generate a mixed output signal. A phase detection and acquisition system determines a phase difference between first and second locations along the optical fiber based on phase information extracted from the mixed output signal and combines the phase information extracted from multiple acquisitions to detect strain on the optical fiber sensor.Type: GrantFiled: August 30, 2011Date of Patent: October 27, 2015Assignee: Schlumberger Technology CorporationInventors: Arthur Hartog, Kamal Kader
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Publication number: 20140240862Abstract: Optical window assemblies are disclosed herein. An example apparatus includes a first fixture defining a fluid flow passageway. The example apparatus also includes a second fixture defining an aperture. The second fixture is coupled to the first fixture. A first optical window is disposed in the aperture. The first optical window has a first end and a second end. The first end is to be in contact with fluid in the fluid flow passageway, and a cross-sectional size of the first optical window decreases from the first end toward the second end along a portion of the first optical window.Type: ApplicationFiled: February 25, 2013Publication date: August 28, 2014Applicant: Schlumberger Technology CorporationInventors: Akira Kamiya, Stephane Vannuffelen, Kamal Kader, Hua Chen, Hisatoshi Matsumoto
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Publication number: 20140158429Abstract: Present embodiments relate to systems and methods for providing cooling to temperature sensitive components of a downhole tool with an intermittent power supply. To provide one example, a downhole tool may include a temperature sensitive component, an enclosure, a cooling unit, and a heat exchanger. The enclosure may be designed to provide thermal insulation to the temperature sensitive component. The cooling unit may intermittently provide active cooling while the downhole tool is being operated. The heat exchanger may facilitate heat transfer from the temperature sensitive component to the cooling unit when the cooling unit is providing the active cooling. The heat exchanger may also disable heat transfer between the temperature sensitive component and the cooling unit when the cooling unit is not providing the active cooling.Type: ApplicationFiled: December 5, 2013Publication date: June 12, 2014Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Kamal Kader, Mari Yoshida
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Patent number: 8408064Abstract: A distributed acoustic wave detection system and method is provided. The system may include a fiber optic cable deployed in a well and configured to react to pressure changes resulting from a propagating acoustic wave and an optical source configured to launch interrogating pulses into the fiber optic cable. In addition, the system may include a receiver configured to detect coherent Rayleigh noise produced in response to the interrogating pulses. The CRN signal may be use to track the propagation of the acoustic wave in the well.Type: GrantFiled: November 4, 2009Date of Patent: April 2, 2013Assignee: Schlumberger Technology CorporationInventors: Arthur H. Hartog, Douglas Miller, Kamal Kader, Gareth P. Lees, Graeme Hilton, Stephen Mullens
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Publication number: 20120067118Abstract: A fiber optic sensor system includes an optical source to output a first optical signal to launch into an optical fiber, and a coherent detector to mix a coherent Rayleigh backscatter signal generated by the optical fiber in response to the first optical signal with a second optical signal output by the optical source and to generate a mixed output signal. A phase detection and acquisition system determines a phase difference between first and second locations along the optical fiber based on phase information extracted from the mixed output signal and combines the phase information extracted from multiple acquisitions to detect strain on the optical fiber sensor.Type: ApplicationFiled: August 30, 2011Publication date: March 22, 2012Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Arthur Hartog, Kamal Kader
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Publication number: 20100107754Abstract: A distributed acoustic wave detection system and method is provided. The system may include a fiber optic cable deployed in a well and configured to react to pressure changes resulting from a propagating acoustic wave and an optical source configured to launch interrogating pulses into the fiber optic cable. In addition, the system may include a receiver configured to detect coherent Rayleigh noise produced in response to the interrogating pulses. The CRN signal may be use to track the propagation of the acoustic wave in the well.Type: ApplicationFiled: November 4, 2009Publication date: May 6, 2010Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Arthur H. Hartog, Douglas Miller, Kamal Kader, Gareth P. Lees, Graeme Hilton, Stephen Mullens
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Patent number: 7668411Abstract: An optical time domain reflectometry (OTDR) system is configured to detect Rayleigh backscatter reflected from a multimode sensing optical fiber. The system includes a single spatial mode filtering system to select a single speckle of the Rayleigh backscatter produced in response to an optical pulse launched into the multimode fiber. The detected single speckle may be used for distributed disturbance (vibration) detection.Type: GrantFiled: June 6, 2008Date of Patent: February 23, 2010Assignee: Schlumberger Technology CorporationInventors: Dylan Davies, Arthur H. Hartog, Kamal Kader
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Publication number: 20090304322Abstract: An optical time domain reflectometry (OTDR) system is configured to detect Rayleigh backscatter reflected from a multimode sensing optical fiber. The system includes a single spatial mode filtering system to select a single speckle of the Rayleigh backscatter produced in response to an optical pulse launched into the multimode fiber. The detected single speckle may be used for distributed disturbance (vibration) detection.Type: ApplicationFiled: June 6, 2008Publication date: December 10, 2009Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Dylan Davies, Arthur H. Hartog, Kamal Kader