1
Franz Aguirre, Wade D Dupree, Mark Holly, Derek Copold: Grip enhanced tractoring. Schlumberger Technology Corporation, Trevor Grove, John Vereb, Jody DeStefanis, December 10, 2013: US08602115 (9 worldwide citation)

A tractor configured for grip locking during advancement to avoid slippage, particularly in open-hole wells. The tractor is equipped with a grip lock mechanism for independently locking an anchor grip in a radially outward direction. This locking occurs sequentially in advance of the power stroke of ...


2
Joseph Varkey, Vladimir Hernandez Solis, Marwan Moufarrej: Modular opto-electrical cable unit. Schlumberger Technology Corporation, Trevor Grove, January 6, 2015: US08929702 (7 worldwide citation)

A modular cable unit for oilfield wireline includes multiple cable modules. The cable modules are interchangeable to achieve a modular cable unit with desired telemetry and electrical properties to suit a specific application. The cable modules can be an optical fiber module, a power cable or an opt ...


3
Tom MacDougall, Harold S Bissonnette: Method and apparatus for pipe-conveyed well logging. Schlumberger Technology Corporation, Trevor Grove, John Vereb, Jody Lynn DeStefanis, April 8, 2014: US08689867 (5 worldwide citation)

A well logging instrument deployment device according to this aspect of the invention includes a housing configured to be coupled to a pipe string. A latch disposed in the housing and is configured to retain a well logging instrument in a first longitudinal position inside the pipe string. An actuat ...


4
Joseph Varkey, Byong Jun Kim, Garud Sridhar, Wayne Fulin, Noor F Sait, Matthew Billingham, Andrea Sbordone: Methods of using enhanced wellbore electrical cables. Schlumberger Technology Corporation, Trevor Grove, Jody Lynn DeStefanis, Cathy Hewitt, August 19, 2014: US08807225 (4 worldwide citation)

An embodiment of a method of deploying a cable into a wellbore penetrating a subterranean formation comprises providing a cable, wherein the cable comprises at least one insulated conductor, at least one armor wire layer surrounding the insulated conductor, a polymeric material disposed in interstit ...


5
Joseph Varkey: Wireline cable for use with downhole tractor assemblies. Schlumberger Technology Corporation, Trevor Grove, May 12, 2015: US09027657 (3 worldwide citation)

A wireline cable includes an electrically conductive cable core for transmitting electrical power, an inner armor layer disposed around the cable core, and an outer armor layer disposed around the inner armor layer, wherein a torque on the cable is balanced by providing the outer armor layer with a ...


6
Kalim Ullah: Oilfield optical data transmission assembly joint. Schlumberger Technology Corporation, Trevor Grove, December 2, 2014: US08903243 (3 worldwide citation)

A joint for disposing between a rotatable drum and stationary surface equipment. The joint serves as a channel through which optical data from a well access line may be routed through the rotating drum and to the stationary equipment for processing. The optical data may be routed in a manner that al ...


7
Joseph Varkey, Garud Sridhar: Packaging for encasing an optical fiber in a cable. Schlumberger Technology Corporation, Trevor Grove, December 1, 2015: US09201207 (2 worldwide citation)

A cable component is provided that includes at least one optical fiber; and a two shaped profiles having inner and outer surfaces such that the inner surfaces combine to from an enclosure for the at least one optical fiber, wherein a first of the two shaped profiles has a cross sectional arc that is ...


8
Keith R Nelson, Gohar Saeed, Franz Aguirre: Force monitoring tractor. Schlumberger Technology Corporation, Trevor Grove, December 9, 2014: US08905148 (2 worldwide citation)

A downhole tractor assembly that is configured for open-hole applications. The assembly includes a force monitoring mechanism to help monitor and control forces imparted through a drive mechanism of the tractor in real time. As such, damage to open-hole formations due to excessive tractoring forces ...


9
Michael Jensen, Ruben Martinez: Rotatable wireline tool of enhanced hydraulic drive consistency. Schlumberger Technology Corporation, Trevor Grove, September 8, 2015: US09127507 (2 worldwide citation)

A rotatable downhole cutting tool configured for enhanced drive consistency in low power circumstances. The tool is equipped with a hydraulic axial drive actuator suitable for use in wireline deployment. The actuator itself includes a reciprocating piston with a ball screw that threadably interfaces ...


10
Sebastien Ives, Peter Fitzgerald: Drum load monitoring. Schlumberger Technology Corporation, Trevor Grove, Cathy Hewitt, October 20, 2015: US09162853 (1 worldwide citation)

An assembly for monitoring load on a drum during an operation in a well with a well access line deployed from the drum. The assembly may include multiple line detection mechanisms for acquiring real-time information relative to dynamic characteristics of the lone over the course of the operation. Th ...