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Roger J Card, J Ernest Brown, Palathinkara S Vinod, Dean M Willberg, Mathew M Samuel, Frank F Chang: Methods for limiting the inflow of formation water and for stimulating subterranean formations. Schlumberger Technology Corporation, Douglas Y Barbo, November 9, 1999: US05979557 (296 worldwide citation)

A method is provided for limiting the inflow of formation water during a well turn around to maximize polymer recovery after a hydraulic fracturing treatment of a formation. The method includes a step for selectively blocking the pore structure in a water-bearing zone and not blocking the pore struc ...


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Bentley J Palmer, Jesse Lee: Fracturing process and composition. Schlumberger Technology Corporation, Doug Y&apos barbo, Catherine Menes, Brigitte Jeffery, July 29, 2003: US06599863 (282 worldwide citation)

The invention provides a method of fracturing, including the provision and use of a fracturing fluid suspension containing an effective amount of a solid particulate breaker material having delayed breaking or degradation characteristics, additionally including an amount of durable fibers and/or pla ...


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Thomas H Zimmerman, Julian J Pop, Joseph L Perkins: Down hole tool for determination of formation properties. Schlumberger Technology Corporation, Henry N Garrana, John H Bouchard, August 29, 1989: US04860581 (277 worldwide citation)

The apparatus of the present invention relates to a down hole tool capable of extraction of valid samples and making pressure measurements useful in calculating formation permeability. The tool incorporates the features of a staddle packing to allow formation fluid specimens to be taken at large flo ...


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Roger J Card, Paul R Howard, Jean Pierre Feraud, Vernon G Constien: Control of particulate flowback in subterranean wells. Dowell a division of Schlumberger Technology Corporation, John E Vick Jr, March 26, 1996: US05501275 (267 worldwide citation)

The addition of fibrous mixtures in intimate mixtures with particulates for fracturing and gravel packing decreases or eliminates the undesirable flowback of proppant or formation fines while stabilizing the sand pack and lowering the demand for high polymer loadings in the placement fluids. Fibers ...


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William D Norman, Raymond J Jasinski, Erik B Nelson: Hydraulic fracturing process and compositions. Dowell a division of Schlumberger Technology Corporation, John E Vick Jr, September 3, 1996: US05551516 (265 worldwide citation)

Viscoelastic surfactant based aqueous fluid systems are described that are useful in fracturing subterranean formations penetrated by a wellbore. The preferred thickening agents are quaternary ammonium halide salts derived from certain waxes, fats and oils. The thickening agent is used in conjunctio ...


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Diane M Harvey, Yogendra C Pandya, Julian C Anigbogu, J Thomas Provost, Juan C Alvarado, David J Scheibner, Sanjay S Kanvinde, Bruce A Fogelsong, Keith G Kaan: System and method for electronic data delivery. Schlumberger Technology Corporation, Pehr B Jansson, William Batzer, John J Ryberg, February 11, 2003: US06519568 (243 worldwide citation)

The present invention comprises a data delivery system for delivering oilfield data from an acquisition site to a remote delivery site comprising a central data hub computer that processes a workflow order for controlling delivery of the oilfield data, a data acquisition site computer that transmits ...


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J Ernest Brown, Roger J Card, Erik B Nelson: Methods and compositions for testing subterranean formations. Schlumberger Technology Corporation Dowell division, John E Vick Esq, Douglas Y Barbo Esq, October 12, 1999: US05964295 (236 worldwide citation)

The improved recovery of hydrocarbons from subterranean formations by hydraulically fracturing a subterranean formation is accomplished. Fracturing fluids using a viscoelastic surfactant fluid containing wormlike micelles are useful to improve recovery of hydrocarbons and limit the loss of fracturin ...


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Thomas H Zimmerman, Julian J Pop, Joseph L Perkins: Down hole method for determination of formation properties. Schlumberger Technology Corporation, Henry N Garrana, Frederic C Wagret, June 26, 1990: US04936139 (229 worldwide citation)

The apparatus of the present invention relates to a down hole tool capable of extraction of valid samples and making pressure measurements useful in calculating formation permeability. The tool incorporates the features of a straddle packer to allow formation fluid specimens to be taken at large flo ...


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Alexandre G E Kosmala, Attilio C Pisoni, Dimitrios K Pirovolou, Spyro J Kotsonis: Actively controlled rotary steerable system and method for drilling wells. Schlumberger Technology Corporation, James L Jackson, Wayne I Kanak, Steven L Christian, July 25, 2000: US06092610 (228 worldwide citation)

An actively controlled rotary steerable drilling system for directional drilling of wells having a tool collar rotated by a drill string during well drilling. A bit shaft has an upper portion within the tool collar and a lower end extending from the collar and supporting a drill bit. The bit shaft i ...