| Patent | Date |
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System and method for storing energy in form of compressed air in tubes integrated in a tank containing water and water vapour
Grant 10,190,494 - Wittrisch , et al. Ja | 2019-01-29 |
Floating offshore wind turbine comprising an active nacelle tilt stabilization system
Grant 10,180,127 - Wittrisch , et al. Ja | 2019-01-15 |
System And Method For Storing Energy In Form Of Compressed Air In Tubes Integrated In A Tank Containing Water And Water Vapour
App 20160222881 - WITTRISCH; Christian ; et al. | 2016-08-04 |
System For Storing Energy In The Form Of Compressed Air In A Set Of Surface Tubes
App 20150167892 - WITTRISCH; Christian | 2015-06-18 |
Floating Offshore Wind Turbine Comprising An Active Nacelle Tilt Stabilization System
App 20130302139 - Wittrisch; Christian ; et al. | 2013-11-14 |
Sealed feedthrough assembly for optical fiber
Grant 7,400,811 - Wittrisch July 15, 2 | 2008-07-15 |
Reverse-circulation drilling method and system
Grant 7,290,625 - Amaudric Du Chaffaut , et al. November 6, 2 | 2007-11-06 |
Method and system for pumping in an oil well
Grant 7,290,608 - Wittrisch November 6, 2 | 2007-11-06 |
Pressure sensor with temperature compensated optical fiber
Grant 7,197,934 - Wittrisch , et al. April 3, 2 | 2007-04-03 |
Connection device for optical fiber
Grant 7,114,855 - Wittrisch October 3, 2 | 2006-10-03 |
Sealed feedthrough assembly for optical fiber
App 20060210231 - Wittrisch; Christian | 2006-09-21 |
Controlled-pressure drop liner
Grant 7,100,686 - Wittrisch September 5, 2 | 2006-09-05 |
Pressure sensor with temperature compensated optical fiber
App 20060163456 - Wittrisch; Christian ; et al. | 2006-07-27 |
Reverse-circulation drilling method and system
App 20060060385 - Amaudric Du Chaffaut; Benoit ; et al. | 2006-03-23 |
Connection device for optical fiber
App 20050207708 - Wittrisch, Christian | 2005-09-22 |
Method and system for pumping in an oil well
App 20050061517 - Wittrisch, Christian | 2005-03-24 |
Controlled-pressure drop liner
App 20040108107 - Wittrisch, Christian | 2004-06-10 |
Jet pumping device
Grant 6,210,123 - Wittrisch April 3, 2 | 2001-04-03 |
Measuring method and system comprising a semi-rigid extension
Grant 6,179,058 - Wittrisch January 30, 2 | 2001-01-30 |
Method and system intended for measurements in a horizontal pipe
Grant 6,173,787 - Wittrisch January 16, 2 | 2001-01-16 |
Reinforced composite rod
Grant 6,157,761 - Wittrisch December 5, 2 | 2000-12-05 |
Axial-flow and centrifugal pumping system
Grant 5,961,282 - Wittrisch , et al. October 5, 1 | 1999-10-05 |
Device for coupling a receiver system with the wall of a well
Grant 5,864,099 - Wittrisch , et al. January 26, 1 | 1999-01-26 |
Device for storing and for handling a rod made of composite
Grant 5,676,327 - Wittrisch October 14, 1 | 1997-10-14 |
Measuring device and method in a hydrocarbon production well
Grant 5,505,259 - Wittrisch , et al. April 9, 1 | 1996-04-09 |
Device, system and method for drilling and completing a lateral well
Grant 5,458,209 - Hayes , et al. October 17, 1 | 1995-10-17 |
Seismic prospecting method and device using a drill bit working in a well
Grant 5,372,207 - Naville , et al. December 13, 1 | 1994-12-13 |
System, support for carrying out measurings and/or servicings in a wellbore or in a well in the process of being drilled and uses thereof
Grant 5,353,872 - Wittrisch October 11, 1 | 1994-10-11 |
Method and device for setting up sondes against the wall of a cased well
Grant 5,318,129 - Wittrisch June 7, 1 | 1994-06-07 |
Method and device for carrying out measurings and/or servicings in a wellbore or a well in the process of being drilled
Grant 5,305,830 - Wittrisch April 26, 1 | 1994-04-26 |
Method and device for carrying out interventions in wells where high temperatures prevail
Grant 5,217,075 - Wittrisch June 8, 1 | 1993-06-08 |
Method and device for carrying out measuring operations of interventions in a well
Grant 5,180,011 - Wittrisch January 19, 1 | 1993-01-19 |
Device for activating and measuring nonflowing producing wells
Grant 5,150,750 - Lessi , et al. September 29, 1 | 1992-09-29 |
System for driving a non rigid exploration device into a well where its progression by gravity is difficult
Grant 5,111,880 - Wittrisch , et al. May 12, 1 | 1992-05-12 |
Method and device for performing perforating operations in a well
Grant 5,044,437 - Wittrisch September 3, 1 | 1991-09-03 |
Method and device of seismic prospection in wells and particularly deviated wells
Grant 5,016,727 - Wittrisch May 21, 1 | 1991-05-21 |
Method and device for taking measurements and/or carrying out interventions in a sharply inclined well section and its application to production of seismic profiles
Grant 4,945,987 - Wittrisch August 7, 1 | 1990-08-07 |
Protective device for enlarging the effective diameter of a probe in large diameter wells
Grant 4,929,915 - Wittrisch May 29, 1 | 1990-05-29 |
Equipment for a drill pipe string including a side entry sub, a safety member for anchoring a cable on a support, and a method of using the equipment
Grant 4,913,227 - Wittrisch April 3, 1 | 1990-04-03 |
Process and device for guiding a drilling tool through geological formations
Grant 4,905,774 - Wittrisch March 6, 1 | 1990-03-06 |
Method and device for taking measurements and/or carrying out interventions in a well subjected to hydraulic compression
Grant 4,898,241 - Wittrisch February 6, 1 | 1990-02-06 |
Stopper for cable passages or conduits
Grant 4,877,095 - Wittrisch October 31, 1 | 1989-10-31 |
Process and device for installing seismic sensors inside a petroleum production well
Grant 4,775,009 - Wittrisch , et al. October 4, 1 | 1988-10-04 |
Cable cutting coupling for drilling, production, well logging or other operations in wells
Grant 4,738,312 - Wittrisch April 19, 1 | 1988-04-19 |
Method and a device for carrying out measurements and/or operations in a well
Grant 4,690,214 - Wittrisch September 1, 1 | 1987-09-01 |
Equipment for a pipe string such as a drill-pipe string, comprising a side entry connection for passing a cable
Grant 4,660,635 - Wittrisch April 28, 1 | 1987-04-28 |
Method and device for effecting, by means of specialized tools, such operations as measurements in highly inclined to the vertical or horizontal well portions
Grant 4,570,709 - Wittrisch * February 18, 1 | 1986-02-18 |
Method and device for effecting, by means of specialized tools, such operations as measurements in highly inclined to the vertical or horizontal well portions
Grant 4,457,370 - Wittrisch July 3, 1 | 1984-07-03 |
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