Raghu MADHAVAN

Person

Rosharon, TX, US

People

Patents Grantslast 30 patents

Information Patent Grant
Fracture-resistant self-lubricating wear surfaces
- Patent number 10,233,934
- Issue date Mar 19, 2019
- Schlumberger Technology Corporation
- Manuel P. Marya
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Systems and methods for detecting drillstring loads
- Patent number 9,157,313
- Issue date Oct 13, 2015
- IntelliServ, LLC
- Raghu Madhavan
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method and conduit for transmitting signals
- Patent number 9,121,962
- Issue date Sep 1, 2015
- IntelliServ, LLC
- Raghu Madhavan
- G01 - MEASURING TESTING
Information Patent Grant
Wellbore telemetry system and method
- Patent number 9,109,439
- Issue date Aug 18, 2015
- IntelliServ, LLC
- Jean-Michel Hache
- E21 - EARTH DRILLING MINING
Information Patent Grant
Seal member
- Patent number 8,614,273
- Issue date Dec 24, 2013
- Nissin Kogyo Co., Ltd.
- Toru Noguchi
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Seal member
- Patent number 8,403,332
- Issue date Mar 26, 2013
- Nissan Kogyo Co., Ltd
- Toru Noguchi
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Apparatus for determining downhole fluid temperatures
- Patent number 8,398,301
- Issue date Mar 19, 2013
- Schlumberger Technology Corporation
- Raghu Madhavan
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method and conduit for transmitting signals
- Patent number 8,344,905
- Issue date Jan 1, 2013
- IntelliServ, LLC
- Raghu Madhavan
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Wellbore telemetry system and method
- Patent number 8,164,476
- Issue date Apr 24, 2012
- IntelliServ, LLC
- Jean-Michel Hache
- E21 - EARTH DRILLING MINING
Information Patent Grant
Cable link for a wellbore telemetry system
- Patent number 8,120,508
- Issue date Feb 21, 2012
- IntelliServ, LLC
- Raghu Madhavan
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method and apparatus for locating faults in wired drill pipe
- Patent number 8,072,347
- Issue date Dec 6, 2011
- IntelliServ, LLC
- David Santoso
- E21 - EARTH DRILLING MINING
Information Patent Grant
Bidirectional drill string telemetry for measuring and drilling con...
- Patent number 7,913,773
- Issue date Mar 29, 2011
- Schlumberger Technology Corporation
- Qiming Li
- G01 - MEASURING TESTING
Information Patent Grant
Surface communication apparatus and method for use with drill strin...
- Patent number 7,817,062
- Issue date Oct 19, 2010
- IntelliServ, LLC
- Qiming Li
- G01 - MEASURING TESTING
Information Patent Grant
Method and conduit for transmitting signals
- Patent number 7,413,021
- Issue date Aug 19, 2008
- Schlumberger Technology Corporation
- Raghu Madhavan
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Downhole telemetry system and method
- Patent number 7,040,415
- Issue date May 9, 2006
- Schlumberger Technology Corporation
- Bruce W. Boyle
- E21 - EARTH DRILLING MINING
Information Patent Grant
Multiple mode pre-loadable fiber optic pressure and temperature sensor
- Patent number 6,898,339
- Issue date May 24, 2005
- Schlumberger Technology Corporation
- Jagdish Shah
- G01 - MEASURING TESTING
Information Patent Grant
Low-loss inductive couplers for use in wired pipe strings
- Patent number 6,866,306
- Issue date Mar 15, 2005
- Schlumberger Technology Corporation
- Bruce W. Boyle
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Wired pipe joint with current-loop inductive couplers
- Patent number 6,641,434
- Issue date Nov 4, 2003
- Schlumberger Technology Corporation
- Bruce W. Boyle
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Packer
- Patent number 6,315,050
- Issue date Nov 13, 2001
- Schlumberger Technology Corp.
- Vladimir Vaynshteyn
- E21 - EARTH DRILLING MINING
Information Patent Grant
Methods and apparatus for measuring differential pressure with fibe...
- Patent number 6,304,686
- Issue date Oct 16, 2001
- Schlumberger Technology Corporation
- Tsutomu Yamate
- G01 - MEASURING TESTING
Information Patent Grant
Methods and apparatus for mechanically enhancing the sensitivity of...
- Patent number 6,246,048
- Issue date Jun 12, 2001
- Schlumberger Technology Corporation
- Rogerio T. Ramos
- G01 - MEASURING TESTING
Information Patent Grant
Methods and apparatus for mechanically enhancing the sensitivity of...
- Patent number 6,218,661
- Issue date Apr 17, 2001
- Schlumberger Technology Corporation
- Robert J. Schroeder
- G01 - MEASURING TESTING
Information Patent Grant
Packer
- Patent number 6,186,227
- Issue date Feb 13, 2001
- Schlumberger Technology Corporation
- Vladimir Vaynshteyn
- E21 - EARTH DRILLING MINING
Information Patent Grant
Snap latch seal locator for sealingly latching tubing to a packer i...
- Patent number 5,685,574
- Issue date Nov 11, 1997
- Dowell, a division of Schlumberger Technology Corporation
- Harjit S. Kohli
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
FRACTURE-RESISTANT SELF-LUBRICATING WEAR SURFACES
- Publication number 20160177959
- Publication date Jun 23, 2016
- SCHLUMBERGER TECHNOLOGY CORPORATION
- Manuel P. Marya
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
METHOD AND CONDUIT FOR TRANSMITTING SIGNALS
- Publication number 20150325990
- Publication date Nov 12, 2015
- INTELLISERV, LLC
- Raghu MADHAVAN
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Systems and Methods for Detecting Drillstring Loads
- Publication number 20130319768
- Publication date Dec 5, 2013
- INTELLISERV, LLC
- Raghu Madhavan
- E21 - EARTH DRILLING MINING
Information Patent Application
METHOD AND CONDUIT FOR TRANSMITTING SIGNALS
- Publication number 20130127632
- Publication date May 23, 2013
- INTELLISERV, LLC
- Raghu Madhavan
- G01 - MEASURING TESTING
Information Patent Application
APPARATUS FOR DETERMINING DOWNHOLE FLUID TEMPERATURES
- Publication number 20110252879
- Publication date Oct 20, 2011
- SCHLUMBERGER TECHNOLOGY CORPORATION
- RAGHU MADHAVAN
- E21 - EARTH DRILLING MINING
Information Patent Application
Seal member
- Publication number 20110156356
- Publication date Jun 30, 2011
- NISSIN KOGYO CO., LTD.
- Toru NOGUCHI
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
SEAL MEMBER
- Publication number 20110156355
- Publication date Jun 30, 2011
- NISSIN KOGYO CO., LTD.
- Toru NOGUCHI
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
DYNAMIC SEAL MEMBER
- Publication number 20110156357
- Publication date Jun 30, 2011
- NISSIN KOGYO CO., LTD.
- Toru NOGUCHI
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
WELLBORE TELEMETRY SYSTEM AND METHOD
- Publication number 20100328096
- Publication date Dec 30, 2010
- INTELLISERV, LLC
- Jean-Michel HACHE
- E21 - EARTH DRILLING MINING
Information Patent Application
SURFACE COMMUNICATION APPARATUS AND METHOD FOR USE WITH DRILL STRIN...
- Publication number 20100271233
- Publication date Oct 28, 2010
- INTELLISERV, LLC
- Qiming Li
- E21 - EARTH DRILLING MINING
Information Patent Application
METHOD AND CONDUIT FOR TRANSMITTING SIGNALS
- Publication number 20100007519
- Publication date Jan 14, 2010
- RAGHU MADHAVAN
- E21 - EARTH DRILLING MINING
Information Patent Application
Cable link for a wellbore telemetry system
- Publication number 20080159077
- Publication date Jul 3, 2008
- Raghu Madhavan
- E21 - EARTH DRILLING MINING
Information Patent Application
Method and apparatus for locating faults in wired drill pipe
- Publication number 20080158005
- Publication date Jul 3, 2008
- David Santoso
- E21 - EARTH DRILLING MINING
Information Patent Application
Wellbore telemetry system and method
- Publication number 20070188344
- Publication date Aug 16, 2007
- Schlumberger Technology Center
- Jean-Michel Hache
- E21 - EARTH DRILLING MINING
Information Patent Application
Wellbore telemetry system and method
- Publication number 20070063865
- Publication date Mar 22, 2007
- SCHLUMBERGER TECHNOLOGY CORPORATION
- Raghu Madhavan
- E21 - EARTH DRILLING MINING
Information Patent Application
Surface communication apparatus and method for use with drill strin...
- Publication number 20070030167
- Publication date Feb 8, 2007
- Qiming Li
- E21 - EARTH DRILLING MINING
Information Patent Application
Bidirectional drill string telemetry for measuring and drilling con...
- Publication number 20070029112
- Publication date Feb 8, 2007
- Qiming Li
- E21 - EARTH DRILLING MINING
Information Patent Application
METHOD AND CONDUIT FOR TRANSMITTING SIGNALS
- Publication number 20060225926
- Publication date Oct 12, 2006
- SCHLUMBERGER TECHNOLOGY CORPORATION
- RAGHU MADHAVAN
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
DOWNHOLE TELEMETRY SYSTEM AND METHOD
- Publication number 20050087368
- Publication date Apr 28, 2005
- BRUCE W. BOYLE
- E21 - EARTH DRILLING MINING
Information Patent Application
Multiple mode pre-loadable fiber optic pressure and temperature sensor
- Publication number 20040114849
- Publication date Jun 17, 2004
- SCHLUMBERGER TECHNOLOGY CORPORATION
- Jagdish Shah
- G01 - MEASURING TESTING
Information Patent Application
Wired pipe joint with current-loop inductive couplers
- Publication number 20020193004
- Publication date Dec 19, 2002
- Bruce W. Boyle
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
Low-loss inductive couplers for use in wired pipe strings
- Publication number 20020135179
- Publication date Sep 26, 2002
- Bruce W. Boyle
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
Packer
- Publication number 20010015277
- Publication date Aug 23, 2001
- Vladimir Vaynshteyn
- E21 - EARTH DRILLING MINING
Information Patent Application
Packer
- Publication number 20010002621
- Publication date Jun 7, 2001
- Vladimir Vaynshteyn
- E21 - EARTH DRILLING MINING

Raghu MADHAVAN

Person

Patents Grantslast 30 patents

Fracture-resistant self-lubricating wear surfaces

Systems and methods for detecting drillstring loads

Method and conduit for transmitting signals

Wellbore telemetry system and method

Seal member

Seal member

Apparatus for determining downhole fluid temperatures

Method and conduit for transmitting signals

Wellbore telemetry system and method

Cable link for a wellbore telemetry system

Method and apparatus for locating faults in wired drill pipe

Bidirectional drill string telemetry for measuring and drilling con...

Surface communication apparatus and method for use with drill strin...

Method and conduit for transmitting signals

Downhole telemetry system and method

Multiple mode pre-loadable fiber optic pressure and temperature sensor

Low-loss inductive couplers for use in wired pipe strings

Wired pipe joint with current-loop inductive couplers

Packer

Methods and apparatus for measuring differential pressure with fibe...

Methods and apparatus for mechanically enhancing the sensitivity of...

Methods and apparatus for mechanically enhancing the sensitivity of...

Packer

Snap latch seal locator for sealingly latching tubing to a packer i...

Patents Applicationslast 30 patents

FRACTURE-RESISTANT SELF-LUBRICATING WEAR SURFACES

METHOD AND CONDUIT FOR TRANSMITTING SIGNALS

Systems and Methods for Detecting Drillstring Loads

METHOD AND CONDUIT FOR TRANSMITTING SIGNALS

APPARATUS FOR DETERMINING DOWNHOLE FLUID TEMPERATURES

Seal member

SEAL MEMBER

DYNAMIC SEAL MEMBER

WELLBORE TELEMETRY SYSTEM AND METHOD

SURFACE COMMUNICATION APPARATUS AND METHOD FOR USE WITH DRILL STRIN...

METHOD AND CONDUIT FOR TRANSMITTING SIGNALS

Cable link for a wellbore telemetry system

Method and apparatus for locating faults in wired drill pipe

Wellbore telemetry system and method

Wellbore telemetry system and method

Surface communication apparatus and method for use with drill strin...

Bidirectional drill string telemetry for measuring and drilling con...

METHOD AND CONDUIT FOR TRANSMITTING SIGNALS

DOWNHOLE TELEMETRY SYSTEM AND METHOD

Multiple mode pre-loadable fiber optic pressure and temperature sensor

Wired pipe joint with current-loop inductive couplers

Low-loss inductive couplers for use in wired pipe strings

Packer

Packer