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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 (245 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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Haoshi Song, Jack F Lands Jr, Wallace E Voreck: Sealing well casings. Schlumberger Technology Corporation, Gordon G Waggett, John J Ryberg, John Bouchard, November 10, 1998: US05833001 (167 worldwide citation)

An apparatus and method for sealing an inner wall of a portion of a casing positioned in a well employs an inflatable sleeve having an outer surface and a conformable composite sleeve of curable composition extending around the outer surface of the inflatable sleeve. The inflatable sleeve is inflate ...


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Thomas O Mitchell, Roger J Card, Arthur Gomtsyan: Cleanup additive. Schlumberger Technology Corporation, Robin C Nava, Thomas Mitchell, John J Ryberg, June 5, 2001: US06242390 (161 worldwide citation)

According to the present invention, a composition and method for hydraulically fracturing a subterranean formation is provided. The composition comprises an aqueous mixture of a hydrated polysaccharide, preferably a galactomannan gum, the hydrated polysaccharide having a plurality of bonding sites; ...


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Bruce W Boyle, Raghu Madhavan, Jacques Jundt: Wired pipe joint with current-loop inductive couplers. Schlumberger Technology Corporation, Jennie, Brigitte L Jeffery, John J Ryberg, November 4, 2003: US06641434 (149 worldwide citation)

A robust, low-loss wired pipe joint is provided for service as a component of a wired pipe string for transmitting measurement data to a surface station from locations in a borehole in oil well drilling and oil well operations. Conductive layers reduce signal energy losses over the length of the dri ...


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Brian Clark, Stephen D Bonner, Jacques Jundt, Martin Luling: Well logging apparatus having toroidal induction antenna for measuring, while drilling, resistivity of earth formations. Schlumberger Technology Corporation, Martin M Novack, Wayne I Kanak, John J Ryberg, August 10, 1993: US05235285 (132 worldwide citation)

Apparatus is disclosed for determining the resistivity of formations surrounding an earth borehole. An electrically conductive metal body, such as a drill collar on a drill string, is movable through the borehole. A transmitting toroidal coil antenna is disposed on the body and is energized to induc ...


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Gary P Bickford, Pete Howard: Metal-sealed, thermoplastic electrical feedthrough. Schlumberger Technology Corporation, Wayne I Kanak, Brigitte L Jeffery, John J Ryberg, January 14, 2003: US06506083 (120 worldwide citation)

An electrical feedthrough includes a connector body made of a metallic material, at least one contact pin inserted through a cavity in the connector body, and an insulating body made of a thermoplastic material formed between the connector body and the contact pin so as to provide a hermetic seal be ...


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Alberto Malinverno, Michael Prange: Uncertainty constrained subsurface modeling. Schlumberger Technology Corporation, William B Batzer, John J Ryberg, April 15, 2003: US06549854 (117 worldwide citation)

A method, apparatus, and article of manufacture are provided that use measurement data to create a model of a subsurface area. The method includes creating an initial parameterized model having an initial estimate of model parameter uncertainties; considering measurement data from the subsurface are ...


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Brian Clark, Jacques Jundt, Martin Luling, Michael O Ross: Well logging apparatus and method for determining formation resistivity at a shallow and a deep depth. Schlumberger Technology Corporation, Martin M Novack, Stephen L Borst, John J Ryberg, February 6, 1990: US04899112 (115 worldwide citation)

Well logging techniques and apparatus are disclosed for determining formation resistivity at different radial depths of investigation and with greater accuracy than prior techniques, for determining the existence, locations and properties of beds and caves, and for determining changes in the size of ...