Patents by Inventor Dhananjay Ramaswamy
Dhananjay Ramaswamy 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: 7692428Abstract: Systems and methods for downhole communication and measurement utilizing an improved metallic tubular having an elongated body with tubular walls and a central bore adapted to receive a run-in tool. The tubular including slotted stations to provide through-tubular signal transmission and/or reception. Hydraulic isolation between the interior and exterior of the tubular is provided by pressure barrier means at the slotted stations. Sensors and/or sources are mounted on the run-in tool, which is adapted for transmission through a drill string to engage within the tubular in alignment with the slotted stations. A run-in tool configuration includes a modulator for real-time wireless communication with the surface and/or remote downhole tools. A tubular and run-in tool configuration also includes inductive couplers for wireless signal data transfer. A method for measuring a formation characteristic utilizing a run-in tool adapted with an interchangeable end segment for multi-mode downhole transport.Type: GrantFiled: January 16, 2007Date of Patent: April 6, 2010Assignee: Schlumberger Technology CorporationInventors: Brian Clark, John Hunka, Mark T. Frey, David L. Smith, Dhananjay Ramaswamy, Anthony Collins, Stephen Bonner
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Publication number: 20070216415Abstract: Systems and methods for downhole communication and measurement utilizing an improved metallic tubular having an elongated body with tubular walls and a central bore adapted to receive a run-in tool. The tubular including slotted stations to provide through-tubular signal transmission and/or reception. Hydraulic isolation between the interior and exterior of the tubular is provided by pressure barrier means at the slotted stations. Sensors and/or sources are mounted on the run-in tool, which is adapted for transmission through a drill string to engage within the tubular in alignment with the slotted stations. A run-in tool configuration includes a modulator for real-time wireless communication with the surface and/or remote downhole tools. A tubular and run-in tool configuration also includes inductive couplers for wireless signal data transfer. A method for measuring a formation characteristic utilizing a run-in tool adapted with an interchangeable end segment for multi-mode downhole transport.Type: ApplicationFiled: January 16, 2007Publication date: September 20, 2007Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Brian Clark, John Hunka, Mark Frey, David Smith, Dhananjay Ramaswamy, Anthony Collins, Stephen Bonner
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Patent number: 7187297Abstract: Systems and methods for downhole communication and measurement utilizing an improved metallic tubular having an elongated body with tubular walls and a central bore adapted to receive a run-in tool. The tubular including slotted stations to provide through-tubular signal transmission and/or reception. Hydraulic isolation between the interior and exterior of the tubular is provided by pressure barrier means at the slotted stations. Sensors and/or sources are mounted on the run-in tool, which is adapted for transmission through a drill string to engage within the tubular in alignment with the slotted stations. A run-in tool configuration includes a modulator for real-time wireless communication with the surface and/or remote downhole tools. A tubular and run-in tool configuration also includes inductive couplers for wireless signal data transfer. A method for measuring a formation characteristic utilizing a run-in tool adapted with an interchangeable end segment for multi-mode downhole transport.Type: GrantFiled: January 30, 2003Date of Patent: March 6, 2007Assignee: Schlumberger Technology CorporationInventors: Brian Clark, John Hunka, Mark T. Frey, David L. Smith, Dhananjay Ramaswamy, Anthony Collins, Stephen Bonner
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Patent number: 6975243Abstract: Systems and methods for downhole communication and measurement utilizing an improved metallic tubular having an elongated body with tubular walls and a central bore adapted to receive a run-in tool. The tubular including slotted stations to provide through-tubular signal transmission and/or reception. Hydraulic isolation between the interior and exterior of the tubular is provided by pressure barrier means at the slotted stations. Sensors and/or sources are mounted on the run-in tool, which is adapted for transmission through a drill string to engage within the tubular in alignment with the slotted stations. A run-in tool configuration includes a modulator for real-time wireless communication with the surface and/or remote downhole tools. A tubular and run-in tool configuration also includes inductive couplers for wireless signal data transfer. A method for measuring a formation characteristic utilizing a run-in tool adapted with an interchangeable end segment for multi-mode downhole transport.Type: GrantFiled: January 30, 2003Date of Patent: December 13, 2005Assignee: Schlumberger Technology CorporationInventors: Brian Clark, John Hunka, Mark T. Frey, David L. Smith, Dhananjay Ramaswamy, Anthony Collins, Stephen Bonner
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Patent number: 6903660Abstract: Systems and methods for downhole communication and measurement utilizing an improved metallic tubular having an elongated body with tubular walls and a central bore adapted to receive a run-in tool. The tubular including slotted stations to provide through-tubular signal transmission and/or reception. Hydraulic isolation between the interior and exterior of the tubular is provided by pressure barrier means at the slotted stations. Sensors and/or sources are mounted on the run-in tool, which is adapted for transmission through a drill string to engage within the tubular in alignment with the slotted stations. A run-in tool configuration includes a modulator for real-time wireless communication with the surface and/or remote downhole tools. A tubular and run-in tool configuration also includes inductive couplers for wireless signal data transfer. A method for measuring a formation characteristic utilizing a run-in tool adapted with an interchangeable end segment for multi-mode downhole transport.Type: GrantFiled: January 30, 2003Date of Patent: June 7, 2005Assignee: Schlumberger Technology CorporationInventors: Brian Clark, John Hunka, Mark T. Frey, David L. Smith, Dhananjay Ramaswamy, Anthony Collins, Stephen Bonner
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Patent number: 6863127Abstract: Systems and methods for monitoring a characteristic of a subterranean hydrocarbon reservoir and for placing a borehole in the vicinity of a well in an earth formation. New well completion systems with slotted stations are utilized to provide through-casing signal-transmission and/or reception. Hydraulic isolation between the interior and the exterior of the completion is provided by pressure barrier means at the slotted stations. The completions permit temporary or permanent monitoring of changes in reservoir saturation with the use of mobile sources/sensors. The completions also form part of a system for accurately placing a well within a desired distance and orientation relative to an existing well.Type: GrantFiled: June 3, 2003Date of Patent: March 8, 2005Assignee: Schlumberger Technology CorporationInventors: Brian Clark, Martin G. Lüling, Mark Frey, Dhananjay Ramaswamy, Anthony Collins
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Publication number: 20030209347Abstract: Systems and methods for monitoring a characteristic of a subterranean hydrocarbon reservoir and for placing a borehole in the vicinity of a well in an earth formation. New well completion systems with slotted stations are utilized to provide through-casing signal-transmission and/or reception. Hydraulic isolation between the interior and the exterior of the completion is provided by pressure barrier means at the slotted stations. The completions permit temporary or permanent monitoring of changes in reservoir saturation with the use of mobile sources/sensors. The completions also form part of a system for accurately placing a well within a desired distance and orientation relative to an existing well.Type: ApplicationFiled: June 3, 2003Publication date: November 13, 2003Inventors: Brian Clark, Martin G. Luling, Mark Frey, Dhananjay Ramaswamy, Anthony Collins
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Patent number: 6614229Abstract: Systems and methods for monitoring a characteristic of a subterranean hydrocarbon reservoir and for placing a borehole in the vicinity of a well in an earth formation. New well completion systems with slotted stations are utilized to provide through-casing signal-transmission and/or reception. Hydraulic isolation between the interior and the exterior of the completion is provided by pressure barrier means at the slotted stations. The completions permit temporary or permanent monitoring of changes in reservoir saturation with the use of mobile sources/sensors. The completions also form part of a system for accurately placing a well within a desired distance and orientation relative to an existing well.Type: GrantFiled: March 27, 2000Date of Patent: September 2, 2003Assignee: Schlumberger Technology CorporationInventors: Brian Clark, Martin G. Lüling, Mark Frey, Dhananjay Ramaswamy, Anthony Collins
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Publication number: 20030141872Abstract: Systems and methods for downhole communication and measurement utilizing an improved metallic tubular having an elongated body with tubular walls and a central bore adapted to receive a run-in tool. The tubular including slotted stations to provide through-tubular signal transmission and/or reception. Hydraulic isolation between the interior and exterior of the tubular is provided by pressure barrier means at the slotted stations. Sensors and/or sources are mounted on the run-in tool, which is adapted for transmission through a drill string to engage within the tubular in alignment with the slotted stations. A run-in tool configuration includes a modulator for real-time wireless communication with the surface and/or remote downhole tools. A tubular and run-in tool configuration also includes inductive couplers for wireless signal data transfer. A method for measuring a formation characteristic utilizing a run-in tool adapted with an interchangeable end segment for multi-mode downhole transport.Type: ApplicationFiled: January 30, 2003Publication date: July 31, 2003Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION.Inventors: Brian Clark, John Hunka, Mark T. Frey, David L. Smith, Dhananjay Ramaswamy, Anthony Collins, Stephen Bonner
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Publication number: 20030137302Abstract: Systems and methods for downhole communication and measurement utilizing an improved metallic tubular having an elongated body with tubular walls and a central bore adapted to receive a run-in tool. The tubular including slotted stations to provide through-tubular signal transmission and/or reception. Hydraulic isolation between the interior and exterior of the tubular is provided by pressure barrier means at the slotted stations. Sensors and/or sources are mounted on the run-in tool, which is adapted for transmission through a drill string to engage within the tubular in alignment with the slotted stations. A run-in tool configuration includes a modulator for real-time wireless communication with the surface and/or remote downhole tools. A tubular and run-in tool configuration also includes inductive couplers for wireless signal data transfer. A method for measuring a formation characteristic utilizing a run-in tool adapted with an interchangeable end segment for multi-mode downhole transport.Type: ApplicationFiled: January 30, 2003Publication date: July 24, 2003Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Brian Clark, John Hunka, Mark T. Frey, David L. Smith, Dhananjay Ramaswamy, Anthony Collins, Stephen Bonner
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Publication number: 20030137429Abstract: Systems and methods for downhole communication and measurement utilizing an improved metallic tubular having an elongated body with tubular walls and a central bore adapted to receive a run-in tool. The tubular including slotted stations to provide through-tubular signal transmission and/or reception. Hydraulic isolation between the interior and exterior of the tubular is provided by pressure barrier means at the slotted stations. Sensors and/or sources are mounted on the run-in tool, which is adapted for transmission through a drill string to engage within the tubular in alignment with the slotted stations. A run-in tool configuration includes a modulator for real-time wireless communication with the surface and/or remote downhole tools. A tubular and run-in tool configuration also includes inductive couplers for wireless signal data transfer. A method for measuring a formation characteristic utilizing a run-in tool adapted with an interchangeable end segment for multi-mode downhole transport.Type: ApplicationFiled: January 30, 2003Publication date: July 24, 2003Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Brian Clark, John Hunka, Mark T. Frey, David L. Smith, Dhananjay Ramaswamy, Anthony Collins, Stephen Bonner
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Patent number: 6577244Abstract: Systems and methods for downhole communication and measurement utilizing an improved metallic tubular having an elongated body with tubular walls and a central bore adapted to receive a run-in tool. The tubular including slotted stations to provide through-tubular signal transmission and/or reception. Hydraulic isolation between the interior and exterior of the tubular is provided by pressure barrier means at the slotted stations. Sensors and/or sources are mounted on the run-in tool, which is adapted for transmission through a drill string to engage within the tubular in alignment with the slotted stations. A run-in tool configuration includes a modulator for real-time wireless communication with the surface and/or remote downhole tools. A tubular and run-in tool configuration also includes inductive couplers for wireless signal data transfer. A method for measuring a formation characteristic utilizing a run-in tool adapted with an interchangeable end segment for multi-mode downhole transport.Type: GrantFiled: May 22, 2000Date of Patent: June 10, 2003Assignee: Schlumberger Technology CorporationInventors: Brian Clark, John Hunka, Mark T. Frey, David L. Smith, Dhananjay Ramaswamy, Anthony Collins, Stephen Bonner