1
Oliver C Mullins, Toru Terabayashi, Kazuyoshi Kegasawa, Ikko Okuda: Methods and apparatus for downhole fluids analysis. Schlumberger Technology Corporation, Robin Nava, Bill Batzer, Brigitte Jeffery, July 27, 2004: US06768105 (46 worldwide citation)

A method of determining GOR comprising subjecting a fluid to spectroscopic analysis at a first wavelength sensitive to gas and a second wavelength sensitive to oil, determining a response matrix for the contribution of gas at the first and second wavelengths and the contribution of oil at the first ...


2
Joseph Varkey, Byong Kim, Garud Sridhar, Noor Sait, Wayne Fulin: Enhanced electrical cables. Schlumburger Technology, David Cate, Tim Curington, Bill Batzer, January 30, 2007: US07170007 (30 worldwide citation)

Wellbore electrical cables according to the invention include at least one insulated conductor, at least one layer of armor wires surrounding the insulated conductor, and a polymeric material disposed in the interstitial spaces formed between armor wires and interstitial spaces formed between the ar ...


3
Joseph P Varkey, Byong Jun Kim: Methods of manufacturing enhanced electrical cables. Schlumberger Technology, David Cote, Tim Curington, Bill Batzer, March 13, 2007: US07188406 (27 worldwide citation)

Disclosed are methods of manufacturing electrical cables. In one embodiment of the invention, method for manufacturing a wellbore cable includes providing at least one insulated conductor, extruding a first polymeric material layer over the insulated conductor, serving a first layer of armor wires a ...


4
Joseph P Varkey, Garud Sridhar, Seth Silverman, Rashmi B Bhavsar: Enhanced armor wires for electrical cables. Schlumberger Technology, Dave Cate, Tim Curington, Bill Batzer, October 10, 2006: US07119283 (23 worldwide citation)

Electric cables used with wellbore devices to analyze geologic formations adjacent a wellbore including at least one insulated conductor, and one or more armor wires surrounding the insulated conductor, the armor wires formed of a high strength core surrounded by a corrosion resistant alloy clad. Th ...


5
Falk W Doering, Todor K Sheiretov, Robin A Ewan, Benoit A Foubert: Traction control for downhole tractor. Schlumberger Technology, Rodney Warfford, Tim Curington, Bill Batzer, December 5, 2006: US07143843 (20 worldwide citation)

Apparatus, system and methods useful for controlling the traction of a downhole tractor in a borehole include the capability of repeatedly adjusting the normal force applied to at least one component that causes movement of the tractor in the borehole.


6
Julio C Guerrero, Falk W Doering, Carl J Roy, Paul J Beguin: Open hole tractor with tracks. Schlumberger Technology, Rodney Warfford, Tim Curington, Bill Batzer, January 2, 2007: US07156192 (15 worldwide citation)

A downhole tractor is provided that may be used in open or cased wells, and is also designed for use in open holes having a variety of soil/formation consistencies (e.g., soft, firm, rigid, etc.), varying diameters and non-uniform and irregular bore profiles. The tractor may include a track assembly ...


7
Masahiro Kamata: Geophone calibration technique. Schlumberger Technology Corporation, Karan Singh, Bill Batzer, Dale Gaudier, June 5, 2007: US07225662 (15 worldwide citation)

Various techniques are described which may be used to facilitate and improve seismic exploration activities. For example, one aspect of the present invention is directed to a technique for enabling in-situ measurement of geophone response parameters. Another aspect of the present invention is direct ...


8
Svein HÃ¥heim, Paul S Jaques, Robert Hughes Jones, Will Wason: Sonde. Schlumberger Technology Corporation, Karan Singh, Bill Batzer, Dale Gaudier, January 3, 2006: US06981550 (7 worldwide citation)

A sonde and an apparatus for the deployment thereof against a well casing is described, the sonde comprising a resilient C-shaped member (22) and at least one sensor (23).


9
Saad Kisra, Henri Pierre Valero: Data compression methods and systems. Schlumberger Technology Corporation, Karan Singh, Bill Batzer, Dale Gaudier, September 12, 2006: US07107153 (7 worldwide citation)

The present invention is directed to methods and systems for taking measurements relating to subterranean formations. The methods and systems effectively compress data and thus facilitate more efficient data transmission. The methods and systems are capable of automatically varying data compression ...


10
Di Cao, Kenzo Hara: Method of designing geophysical surveys. Schlumberger Technology Corporation, Karan Singh, Bill Batzer, Dale Gaudier, November 15, 2005: US06965849 (5 worldwide citation)

A method for the design of VSP surveys for the purpose of imaging a reef in the formations surrounding the well in question. The basic steps include: building a geophysical model; defining receiver locations in the well within the model; defining the target (reef); ray tracing from receivers to surf ...