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
Joseph Varkey, Anil Singh, Byong Jun Kim, Vladimir Hernandez, Shannon Nimchan, Dan Tabalan: High strength-to-weight-ratio slickline and multiline cables. Schlumberger Technology Corporation, Michael Flynn, David Cate, Jaime Castano, October 13, 2009: US07603011 (39 worldwide citation)

Slickline cables and methods for preparing such cables are disclosed. A slickline cable includes a pre-manufactured polymer composite rod having a channel therein; an optical fiber disposed in the channel; a fastener securing the optical fiber in the channel, wherein the fastener is selected from th ...


3
Joseph Varkey, Garud Sridhar: Enhanced electrical cables. Schlumberger Technology Corporation, David Cate, Michael Flynn, Jaime Castano, July 22, 2008: US07402753 (37 worldwide citation)

Electrical cables formed from at least one insulated conductor, a layer of inner armor wires disposed adjacent the insulated conductor, and a layer of shaped strength members disposed adjacent the outer periphery of the first layer of armor wires. A polymeric material is disposed in interstitial spa ...


4
Joseph P Varkey, Garud Sridhar: Electrical cables with stranded wire strength members. Schlumberger Technology Corporation, Michael Flynn, David Cate, Jaime Castano, December 9, 2008: US07462781 (24 worldwide citation)

Disclosed are high strength wellbore electric cables, which are formed from a plurality of strength members. The strength members are formed from several stranded filament wires which may be encased within a jacket of polymeric material. The strength members may be used as a central strength member, ...


5
Michael H Kenison, Michael G Gay, Robert Bucher, Mahmuda Afroz: Flow reversing apparatus and methods of use. Schlumberger Technology Corporation, Michael Flynn, David Cate, Robin Nava, November 10, 2009: US07614452 (20 worldwide citation)

Apparatus and methods for selectively and safely reversing flow in coiled tubing used for wellbore cleanouts are disclosed. One apparatus includes a section of coiled tubing having a main flow channel, at least two flow-preventing valves in the section of coiled tubing, each adapted to close the mai ...


6
Julio C Guerrero, Hitoshi Tashiro, Bartley Patton, Hubertus V Thomeer, Robin Mallalieu: Wellsite systems utilizing deployable structure. Schlumberger Technology Corporation, Michael Dae, Michael Flynn, David Cate, March 1, 2011: US07896088 (17 worldwide citation)

An apparatus for deploying an instrument usable with a well comprises at least one reversibly expandable structure, at least one actuator operable to change a perimeter dimension of the at least one reversibly expandable structure, at least one instrument disposed interior of the at least one revers ...


7
Joseph Varkey, Byong Jun Kim, Garud Sridhar, Noor Sait, Wayne Fulin: Enhanced wellbore electrical cables. Schlumberger Technology Corporation, Michael Flynn, David Cate, Jaime Castano, September 8, 2009: US07586042 (17 worldwide citation)

A method of preparing a cable comprises extruding first layer of polymeric material upon at least one insulated conductor; serving a first layer of armor wires upon the polymeric material; softening the polymeric material to partially embed armor wires; extruding a second layer of polymeric material ...


8
Bartley J Patton, Matthew D Rouse: Coiled tubing drilling rig. Schlumberger Technology Corporation, Michael Flynn, David Cate, Robin Nava, October 13, 2009: US07600585 (16 worldwide citation)

The present invention provides a rig capable of both coiled tubing and conventional drilling. The rig comprises a mast unit having a drilling mast and a catwalk. The mast unit is adapted for rotary drilling and casing operations. The rig further comprises a drill floor unit adapted to house a drilli ...


9
Todor K Sheiretov, Dwight C Chilcoat, Robin A Ewan, Carl J Roy, Matthew Billingham, Franz Aguirre: Self-anchoring device with force amplification. Schlumberger Technology Corporation, Michael Flynn, David Hofman, Jody Destefanis, December 21, 2010: US07854258 (13 worldwide citation)

A downhole tool is provided that includes a grip assembly for contacting a well formation. The grip assembly includes a gripper body; and a centralizer that is attached to and radially expandable with respect to the gripper body and that has a geometry which is lockable by a locking device. The grip ...


10
Joseph Varkey: Resilient electrical cables. Schlumberger Technology Corporation, Michael Flynn, David Cate, Jaime Castano, December 16, 2008: US07465876 (13 worldwide citation)

The cables include belted insulated conductors, a compression and creep resistant jacket surrounding the insulated conductors, a filler material and compression resistant filler rods placed in interstitial spaces formed between the compression and creep resistant jacket and the insulated conductors, ...