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).

  • Patent number: 7692428
    Abstract: 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: Grant
    Filed: January 16, 2007
    Date of Patent: April 6, 2010
    Assignee: Schlumberger Technology Corporation
    Inventors: Brian Clark, John Hunka, Mark T. Frey, David L. Smith, Dhananjay Ramaswamy, Anthony Collins, Stephen Bonner
  • Publication number: 20070216415
    Abstract: 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: Application
    Filed: January 16, 2007
    Publication date: September 20, 2007
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Brian Clark, John Hunka, Mark Frey, David Smith, Dhananjay Ramaswamy, Anthony Collins, Stephen Bonner
  • Patent number: 7187297
    Abstract: 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: Grant
    Filed: January 30, 2003
    Date of Patent: March 6, 2007
    Assignee: Schlumberger Technology Corporation
    Inventors: Brian Clark, John Hunka, Mark T. Frey, David L. Smith, Dhananjay Ramaswamy, Anthony Collins, Stephen Bonner
  • Patent number: 6975243
    Abstract: 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: Grant
    Filed: January 30, 2003
    Date of Patent: December 13, 2005
    Assignee: Schlumberger Technology Corporation
    Inventors: Brian Clark, John Hunka, Mark T. Frey, David L. Smith, Dhananjay Ramaswamy, Anthony Collins, Stephen Bonner
  • Patent number: 6903660
    Abstract: 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: Grant
    Filed: January 30, 2003
    Date of Patent: June 7, 2005
    Assignee: Schlumberger Technology Corporation
    Inventors: Brian Clark, John Hunka, Mark T. Frey, David L. Smith, Dhananjay Ramaswamy, Anthony Collins, Stephen Bonner
  • Patent number: 6863127
    Abstract: 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: Grant
    Filed: June 3, 2003
    Date of Patent: March 8, 2005
    Assignee: Schlumberger Technology Corporation
    Inventors: Brian Clark, Martin G. Lüling, Mark Frey, Dhananjay Ramaswamy, Anthony Collins
  • Publication number: 20030209347
    Abstract: 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: Application
    Filed: June 3, 2003
    Publication date: November 13, 2003
    Inventors: Brian Clark, Martin G. Luling, Mark Frey, Dhananjay Ramaswamy, Anthony Collins
  • Patent number: 6614229
    Abstract: 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: Grant
    Filed: March 27, 2000
    Date of Patent: September 2, 2003
    Assignee: Schlumberger Technology Corporation
    Inventors: Brian Clark, Martin G. Lüling, Mark Frey, Dhananjay Ramaswamy, Anthony Collins
  • Publication number: 20030141872
    Abstract: 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: Application
    Filed: January 30, 2003
    Publication date: July 31, 2003
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION.
    Inventors: Brian Clark, John Hunka, Mark T. Frey, David L. Smith, Dhananjay Ramaswamy, Anthony Collins, Stephen Bonner
  • Publication number: 20030137302
    Abstract: 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: Application
    Filed: January 30, 2003
    Publication date: July 24, 2003
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Brian Clark, John Hunka, Mark T. Frey, David L. Smith, Dhananjay Ramaswamy, Anthony Collins, Stephen Bonner
  • Publication number: 20030137429
    Abstract: 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: Application
    Filed: January 30, 2003
    Publication date: July 24, 2003
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Brian Clark, John Hunka, Mark T. Frey, David L. Smith, Dhananjay Ramaswamy, Anthony Collins, Stephen Bonner
  • Patent number: 6577244
    Abstract: 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: Grant
    Filed: May 22, 2000
    Date of Patent: June 10, 2003
    Assignee: Schlumberger Technology Corporation
    Inventors: Brian Clark, John Hunka, Mark T. Frey, David L. Smith, Dhananjay Ramaswamy, Anthony Collins, Stephen Bonner