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 ...

Joe C Hromas, Klaus B Huber: Releasable connector assembly for a perforating gun and method. Schlumberger Technology Corporation, Dan C Hu, August 8, 2000: US06098716 (72 worldwide citation)

An apparatus for releasably coupling a perforating gun to a string includes a tubular member to couple the perforating gun to the string and a latch. The latch connects the perforating gun to the tubular member before detonation of the perforating gun. In response to the detonation of the perforatin ...

Joe C Hromas, Antoni K L Miszewski, Klaus B Huber: Automatic tubing release. Schlumberger Technology Corporation, Henry N Garrana, John H Bouchard, March 15, 1994: US05293940 (65 worldwide citation)

An automatic tubing release mechanism is adapted to be disposed in a wellbore between a tubing, on one end, and a perforating gun, on the other end. The release mechanism includes a frangible breakup tube, firing head positioned above the breakup tube, and the perforating gun positioned below the br ...

Herve Ohmer, Klaus B Huber: System and method for isolating a wellbore region. Schlumberger Technology Corporation, Bryan P Galloway, Jeremy P Welch, Robert VanSomeren, October 7, 2008: US07431098 (64 worldwide citation)

A technique is provided to isolate regions of a wellbore. The technique utilizes a swellable material packer that comprises a layer of swellable material disposed about a tubular member of a completion. When the layer is exposed to a substance that induces swelling of the swellable material, the lay ...

Klaus B Huber, Nolan C Lerche, Arnold G Edwards, Kenneth E Rozek, Edward G Smith Jr: Method and apparatus for safe transport handling arming and firing of perforating guns using a bubble activated detonator. Schlumberger Technology Corporation, Henry N Garrana, John H Bouchard, February 18, 1992: US05088413 (48 worldwide citation)

An exploding foil bubble activated detonator, adapted for use in a perforating gun, includes an exploding foil, the exploding foil including as neck section which vaporizes when a current of sufficient magnitude and duration flows therethrough, a layer of polyimide material deposited over said foil, ...

Erwann Lemenager, Herve Ohmer, Klaus B Huber, Randolph J Sheffield: Wireless communications associated with a wellbore. Schlumberger Technology Corporation, Daryl R Wright, Trop Pruner & Hu P C, James L Kurka, January 13, 2009: US07477160 (46 worldwide citation)

A subsea communication system includes addressable nodes in a wellbore and addressable nodes on a floor, where the nodes in the wellbore and on the floor are able to communicate wirelessly with each other, such as through a formation.

Klaus B Huber, Joe C Hromas: Azimuth-oriented perforating system and method. Schlumberger Technology Corporation, Jeffrey E Griffin, Jaime A Castano, John J Ryberg, December 21, 1999: US06003599 (46 worldwide citation)

An apparatus for positioning a tool, such as a perforating gun, in a wellbore to orient the tool in a desired direction. An anchor having a first reference terminal is set in the wellbore, the first reference terminal pointing in a known direction. A second reference terminal is attached to the tool ...

Klaus B Huber, Joe C Hromas, Arnold G Edwards: Tubing and wireline conveyed perforating method and apparatus. Schlumberger Technology Corporation, Henry N Garrana, John H Bouchard, June 25, 1991: US05025861 (43 worldwide citation)

A new method of standalone perforating comprises the steps of lowering a perforator part-way into a borehole on a tubing string; when perforating is desired, connecting a wireline to the perforator; disconnecting the perforator from the tubing string; lowering the perforator into the borehole to the ...

A Glen Edwards, Klaus B Huber: Apparatus and method for orienting a downhole tool in a horizontal or deviated well. Schlumberger Technology Corporation, Jeffrey E Griffin, Gordon G Waggett, John J Ryberg, October 12, 1999: US05964294 (40 worldwide citation)

A tool for performing a downhole function in a horizontal or highly deviated well has a downhole structure with a longitudinal axis and constructed to turn about the axis in response to a moment applied about the axis. The structure includes at least one ballast chamber containing a flowable inert b ...

Klaus B Huber, Laurent E Muller: Downhole tubing conveyed valve. Schlumberger Technology Corporation, Gordon G Waggett, John J Ryberg, John Bouchard, February 2, 1999: US05865254 (40 worldwide citation)

A downhole valve is disclosed for use in a tubing-conveyed string of tools in a well bore, constructed to be actuated to open under pressure forces by dropping a drop bar from the well surface through the tubing. The valve, deployed in the well in a closed condition, has a frangible member arranged ...