1
Joseph Varkey, Ravicharan Mydur, Noor Sait, Willem Wijnberg, Sumitra Kunathikom, Monica Darpi: Optical fiber cables for wellbore applications. Schlumberger Technology Corporation, David Cate, Michael Flynn, Jaime Castano, January 29, 2008: US07324730 (78 worldwide citation)

A cable which includes conductor bundles prepared from at least one optical fiber positioned either centrally or helically about the center axis of the bundle, metallic conductors helically positioned around the bundles center axis, and a polymeric insulation material. A method of making a cable inc ...


2
Ravicharan Mydur, Joseph P Varkey, Sumit Sarkar, Willem A Wijnberg: Electric cable. Schlumberger Technology Corporation, Wayne I Kanak, Brigitte L Jeffery, John J Ryberg, July 29, 2003: US06600108 (67 worldwide citation)

A cable includes an electrical conductor, a first insulating jacket disposed adjacent the electrical conductor and having a first relative permittivity, and a second insulating jacket disposed adjacent the first insulating jacket and having a second relative permittivity that is less than the first ...


3
Ramon Hernandez Marti, Ravicharan Mydur, Paul J Beguin: Transmitting power and telemetry signals on a wireline cable. Schlumberger Technology, Dave Cate, Jaime Castano, Dale Gaudier, August 21, 2007: US07259689 (9 worldwide citation)

A wireline logging assembly includes a cable having primary conductors, secondary conductors, and a central conductor. A first power source excites the primary conductors using a first propagation mode. A first telemetry transceiver excites the primary conductors using a second propagation mode orth ...


4
Brian Doud, James Benner, Ravicharan Mydur, Jean Louis Pessin, Jeff Kamps, Jose R Jimenez III, Emma Ford: High load flange profile for a wireline drum. Schlumberger Technology Corporation, Michael Flynn, David Cate, Jaime Castano, October 21, 2008: US07438280 (3 worldwide citation)

A wireline cable winch drum is provided that includes a core having a longitudinal axis; a pair of flanges spaced apart and extending radially outwardly from the core; and a wireline cable wrapped around the core in the space between the flanges. In one embodiment, at least one of the flanges includ ...


5
Ravicharan Mydur, Jean Louis Pessin, Mike Wedge, Pavan Katte Vadirajachar: Mobile well services assembly. Schlumberger Technology Corporation, Jody DeStefanis, John Vereb, Trevor Grove, October 22, 2013: US08561693

A mobile assembly usable in at least one well services operation includes a chassis, a drum disposed on the chassis having a spooled element disposed thereon for use in the at least one well services operation, a winch disposed on the chassis and attached to the spooled element for raising and lower ...


6
Brian Doud, James Benner, Ravicharan Mydur, Jean Louis Pessin, Jeff Kamps, Jose R Jimenez, Emma Ford: High load flange profile for a wireline drum. Schlumberger Technology Corporation, David Cate, July 3, 2008: US20080156928-A1

A wireline cable winch drum is provided that includes a core having a longitudinal axis; a pair of flanges spaced apart and extending radially outwardly from the core; and a wireline cable wrapped around the core in the space between the flanges. In one embodiment, at least one of the flanges includ ...


7
Joseph Varkey, Ravicharan Mydur, Noor Sait, Willem Wijnberg, Sumitra Kunathikom, Monica Darpi: Optical fiber cables for wellbore applications. Schlumberger Conveyance And Delivery, March 2, 2006: US20060045442-A1

A cable which includes conductor bundles prepared from at least one optical fiber positioned either centrally or helically about the center axis of the bundle, metallic conductors helically positioned around the bundles center axis, and a polymeric insulation material. A method of making a cable inc ...


8
Ramon Hernandez Marti, Ravicharan Mydur, Paul J Beguin: Transmitting power and telemetry signals on a wireline cable. Schlumberger Ipc, August 24, 2006: US20060187084-A1

A wireline logging assembly includes a cable having primary conductors, secondary conductors, and a central conductor. A first power source excites the primary conductors using a first propagation mode. A first telemetry transceiver excites the primary conductors using a second propagation mode orth ...


9
Ravicharan Mydur, Jean Louis Pessin, Mike Wedge, Pavan Katte Vadirajachar: Mobile Well Services Assembly. Schlumberger Ipc, October 22, 2009: US20090260804-A1

A mobile assembly usable in at least one well services operation includes a chassis, a drum disposed on the chassis having a spooled element disposed thereon for use in the at least one well services operation, a winch disposed on the chassis and attached to the spooled element for raising and lower ...