Andrew Acock, Steve Hoover: Method of completing a well in an unconsolidated formation. Schlumberger Technology Corporation, Robin Nava, Brigitte L Echols, John Ryberg, May 11, 2004: US06732800 (105 worldwide citation)

Herein is described a method of completing an interval of a cased well drilled through incompetent formation. This method includes a combination of three successive operations: zero-degree phasing perforation of a relatively small portion of the interval to be completed, consolidation of the formati ...

Klaus B Huber, Joe C Hromas, Nolan C Lerche: Inductive coupler activated completion system. Schlumberger Technology Corporation, Gordon Waggett, John Ryberg, Jeffrey E Griffin, October 26, 1999: US05971072 (95 worldwide citation)

A well completion apparatus disposed in a wellbore having first and second tubings and a tool disposed in the second tubing. An inductive coupler has a male coil located in the first tubing and is configured to receive an input signal. A female coil in the inductive coupler is attached to the first ...

Kevin W England, J Ernest Brown, Jerald J Hinkel, Ramchandra M Reddy: Foaming agents for use in coal seam reservoirs. Schlumberger Technology Corporation, Thomas O Mitchell, Brigitte Jeffery, John Ryberg, April 13, 2004: US06720290 (84 worldwide citation)

A well treatment fluid composition that comprises a carrier fluid and an amphoteric surfactant, and optionally a viscosifying agent and proppant, is well suited for use in fracturing coal beds to stimulate methane production. The composition preferably is a foam that comprises a gas such as nitrogen ...

Bernard Dargaud, Sylvaine Le Roy Delage, Marc Thiercelin: Cementing compositions and application of such compositions for cementing oil wells or the like. Schlumberger Technology Corporation, Catherine Menes, Brigitte Jeffery, John Ryberg, November 11, 2003: US06645288 (77 worldwide citation)

The present invention provides cementing compositions for oil wells or the like comprising an hydraulic binder and reinforcing particles constituted by a flexible material of low compressibility, and with an average grain size of less than 500 &mgr;m.

Mathew M Samuel, Frank F Chang, Roger J Card, Ronnie L Thomas: Compositions containing aqueous viscosifying surfactants and methods for applying such compositions in subterranean formations. Schlumberger Technology Corporation, Catherine Menes, Brigitte Jeffery, John Ryberg, October 28, 2003: US06637517 (75 worldwide citation)

The improved recovery of hydrocarbons from subterranean formations by hydraulically fracturing a subterranean formation is accomplished. Fracturing fluids using a viscosifying surfactant fluid containing viscosifying micelles, for example, wormlike micelles, are useful to improve recovery of hydroca ...

Victor M Bolze, Jonathan Brown, Andrew Kurkjian: Reduced contamination sampling. Schlumberger Technology Corporation, J L Jennie Salazar, Brigitte L Jeffery, John Ryberg, December 9, 2003: US06659177 (63 worldwide citation)

A sample module for use in a downhole tool includes a sample chamber for receiving and storing pressurized fluid. A piston is slidably disposed in the chamber to define a sample cavity and a buffer cavity, and the cavities have variable volumes determined by movement of the piston. A first flowline ...

Oliver C Mullins, Andrew Kurkjian, Robin McGowan, Thomas Distefano, Ian Traboulay: Methods and apparatus for optically measuring fluid compressibility downhole. Schlumberger Technology Corporation, John Ryberg, J L Jennie Salazar, November 5, 2002: US06474152 (59 worldwide citation)

The compressibility of a formation hydrocarbon sample is determined downhole by using a borehole tool to obtain the sample downhole, and, at two different pressures, subjecting the sample to near infrared illumination and conducting spectral absorption measurement of peaks at and/or around about 6,0 ...

Victor M Bolze, Jonathan W Brown, Andrew L Kurkjian, Timothy L Long, Angus J Melbourne, Linward A Moore, Robert P Zimmerman: Formation fluid sampling apparatus and method. Schlumberger Technology Corporation, J L Jennie Salazar, Brigitte L Jeffery, John Ryberg, February 10, 2004: US06688390 (54 worldwide citation)

A sample module is provided for use in a downhole tool to obtain fluid from a subsurface formation penetrated by a wellbore. The sample module includes a sample chamber carried by the module for collecting a sample of formation fluid obtained from the formation via the downhole tool, and a validatio ...

Reinhart Ciglenec, Jacques Tabanou, Thomas MacDougall, Kenneth Havlinek, Arthur Liberman, Ian Bryant, Troy Fields: Well-bore sensor apparatus and method. Schlumberger Technology Corporation, J L Jennie Salazar, Brigitte L Jeffrey, John Ryberg, July 27, 2004: US06766854 (50 worldwide citation)

The present invention relates to a well-bore sensor apparatus and method. The apparatus includes a downhole tool carrying at least one sensor plug for deployment into the sidewall of a well-bore. The apparatus may also be used in conjunction with a surface control unit and a communication link for o ...

Philippe F Salamitou, Kenneth E Stephenson, John W J Ferguson, John Barry Fitzgerald, Anthony Robert Holmes Goodwin, Gerald H Meeten, Sarah Pelham: Flow meter for multi-phase mixtures. Schlumberger Technology Corporation, Brigitte L Jeffery, John Ryberg, June 29, 2004: US06755086 (45 worldwide citation)

A flow meter for multiphase flows, includes a holdup measuring device having a Venturi located upstream thereof and separated therefrom by a distance that results in flow through the holdup measuring device being at least partially homogenized by the effect of the Venturi on the fluids flowing there ...