Willem Albert Wijnberg

6441618, Aug 27, 2002

Jan 29, 2001

09/772039

David J. Rossi - Katy TX
Willem A. Wijnberg - Houston TX
Peter V. Howard - Belleville TX
Jean-Pierre R. Delhomme - Boulogne-Billancourt, FR
Kamal Babour - Bures sur Yvette, FR

Schlumberger Technology Corporation - Houston TX

G01V 302

324357, 324324, 324674

Sensors are permanently placed in the ground near observation and injection wells in order to passively and continuously monitor the status of seawater advance toward fresh water aquifers near coastal cities as well as the status of fresh water injected into the injection wells. Such sensor devices are installed in the ground and electrically connected to surface acquisition equipment that would, without human intervention, transmit acquired data to a centralized facility for processing and interpretation. Various types of sensors can be used: the sensors used for general reservoir monitoring and/or the sensors used for leak detection, soil heating, and temperature mapping. Alternatively, a special type of sensor can be designed and provided for the purpose of monitoring the status of seawater advance toward fresh water aquifers.

6446723, Sep 10, 2002

Jun 9, 1999

09/328729

Rogerio Tadeu Ramos - Bethel CT
Willem A. Wijnberg - Houston TX
Christian Jean Marcel Chouzenoux - Saint Cloud, FR
Stephanie Marie-Odile Montillet - Chatenay-Malabry, FR

Schlumberger Technology Corporation - Ridgefield CT

E21B 1700

166285, 166 651, 166242

A description of a cable for connection to sensors permanently downhole is provided, the cable comprising a plurality of elongate conductors capable of operative connection to sensors, a sheath surrounding the elongate conductors and holding the conductors so as to extend substantially parallel to an elongate axis, wherein the sheath has a cross-section, perpendicular to the direction of the elongate axis, which has a major dimension and a minor dimension. The cross-section of the cable is thus flattened and can be in the shape of an ellipse, a crescent or comprise a circle with wing-like portions attached on opposite sides of the circle. The sheath is made from a resilient material, so as to provide a robust outer surface of the cable which ensures the cable can be placed downhole without breaking. A number of the elongate conductors are grouped together and inter-weaved in a helical arrangement, so as to reduce electrical cross-talk between the conductors. Strengthening cords are included in the sheath which are hollow to allow passage of fiber optic cables within the wire cords.

6600108, Jul 29, 2003

Jan 25, 2002

10/057553

Ravicharan Mydur - Houston TX
Joseph P. Varkey - Missouri City TX
Sumit Sarkar - Houston TX
Willem A. Wijnberg - Houston TX

Schlumberger Technology Corporation - Sugar Land TX

H01B 902

174120R, 385101

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 relative permittivity. A method includes providing an electrical conductor, extruding a first insulating jacket having a first relative permittivity over the electrical conductor, and extruding a second insulating jacket having a second relative permittivity over the electrical conductor, wherein the second relative permittivity is less than the first relative permittivity.

7005583, Feb 28, 2006

Apr 25, 2003

10/423716

Joseph P. Varkey - Missouri City TX, US
Byong J. Kim - Sugar Land TX, US
Willem A. Wijnberg - Houston TX, US
Chun-Te Yeh - Sugar Land TX, US

Schlumberger Technology Corporation - Sugar Land TX

H01B 7/00

174120R

An electrical cable includes a first layer, a second layer, and a tie layer, disposed between the first layer and the second layer, for bonding the first layer to the second layer. A method of making an electrical cable includes applying a tie layer to an inner layer, the tie layer being miscible with the inner layer, and bonding an outer layer to the tie layer via one of a chemical reaction therebetween and a physical bond therebetween. An electrical cable includes a first layer, a second layer immiscible with the first layer, and a tie layer disposed between the first layer and the second layer, wherein the tie layer is miscible with the first layer and is capable of bonding with the second layer.

7288721, Oct 30, 2007

Dec 28, 2004

11/024305

Joseph P. Varkey - Missouri City TX, US
Byong Jun Kim - Sugar Land TX, US
Willem A. Wijnberg - Houston TX, US
Faisal Arif - Al-Khobar, SA
Anil Singh - Stafford TX, US
Jeffrey Arnaud - Missouri City TX, US
John Cuong Nguyen - Tomball TX, US

Schlumberger Technology Corporation - Sugar Land TX

H01B 7/18

174102R, 174107, 174108

Disclosed are durable corrosion resistant wellbore electrical cables including a coated electrical conductor, a polymeric protective layer for trapping coating flakes, a first insulating jacket disposed adjacent to the polymeric protective layer and having a first relative permittivity. A second insulating jacket is disposed adjacent to the first insulating jacket and has a second relative permittivity that is less than the first relative permittivity. Another aspect of the invention is a method for manufacturing a cable that includes providing a coated electrical conductor, extruding a polymeric protective layer over the coated electrical conductor, extruding a first insulating jacket over the protective polymeric layer, and extruding a second insulating jacket thereon. Cables of the invention may further include armor wire layers or even current return conductors.

7324730, Jan 29, 2008

Sep 1, 2004

10/931736

Joseph Varkey - Missouri City TX, US
Ravicharan Mydur - Stafford TX, US
Noor Sait - Shekou-Shenzhen, CH
Willem Wijnberg - Houston TX, US
Sumitra Kunathikom - Stafford TX, US
Monica Darpi - Houston TX, US

Schlumberger Technology Corporation - Sugar Land TX

G02B 6/44

385102, 385100, 385101, 385103, 385104, 385106, 385107

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 including forming a conductor bundle by placing helically positioned conductors and optical fibers about the periphery of a central optical fiber or metallic conductor, encasing the conductors, optical fibers, in a polymeric insulation material, and grouping the conductor bundles together.

7730936, Jun 8, 2010

Nov 1, 2007

11/933550

Vladimir Hernandez-Solis - Stafford TX, US
Montie W. Morrison - Sugar Land TX, US
Willem A. Wijnberg - Houston TX, US
Sheng Chang - Sugar Land TX, US
Joseph Varkey - Sugar Land TX, US

Schlumberger Technology Corporation - Sugar Land TX

E21B 36/04
E21B 43/24

166 60, 166302, 392301

A heating and distributed-temperature-sensor cable permanently fixed in a wellbore that permits known amounts of heat to be introduced to subsurface formations and improved temperature measurement thereof. The heat is introduced into a target zone of the wellbore by forming the cable in two sections: an upper section that carries an electrical current without generating significant amounts of heat, and a lower section that generates heat from the electrical current. Continuous distributed-temperature-sensing is performed through measuring various scattering mechanism in optical fibers that run the length of the cable.

7915532, Mar 29, 2011

Jun 6, 2008

12/135015

Joseph Varkey - Sugar Land TX, US
Byong Un Kim - Sugar Land TX, US
Jushik Yun - Sugar Land TX, US
Willem A. Wijnberg - Houston TX, US
Montie W. Morrison - Sugar Land TX, US

WesternGeco L.L.C. - Houston TX

H01B 7/00

174110R, 174113 R, 174113 C

An electrical cable having a polymeric inner layer enclosing a cable core, and a polymeric outer layer enclosing the cable core and the inner layer. The outer layer operable to maintain integrity of the cable within a predetermined temperature range.